Point Forecast Matrices
Issued by NWS Des Moines, IA

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Point Forecast Matrices
National Weather Service Des Moines IA
244 PM CDT Fri May 16 2025

IAZ060-170900-
Des Moines-Polk IA
41.54N  93.65W Elev. 924 ft
244 PM CDT Fri May 16 2025

Date           05/16/25      Sat 05/17/25            Sun 05/18/25            Mon
CDT 3hrly     16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07
UTC 3hrly     21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12

Min/Max                      48          68          45          74          54
Temp          73 63 56 51 49 49 53 61 68 68 57 51 46 46 56 66 73 72 65 61 58 56
Dewpt         42 41 40 40 38 38 39 40 41 41 41 39 38 37 40 42 42 43 45 47 48 50
RH            33 44 55 66 66 66 59 46 37 37 55 63 73 71 55 42 33 35 48 60 69 80
Wind dir       W  W  W  W  W NW NW NW NW NW  N  N  N NE NE  E  E  E  E  E  E  E
Wind spd      28 26 21 19 18 17 17 16 14 10  5  5  4  5  6  6 10 11 11 12 14 18
Wind gust     42 40 34 29
Clouds        B2 B2 B2 B2 B1 B1 B1 FW FW FW FW FW SC FW FW FW SC SC B2 B2 B2 B2
PoP 12hr                     20           0           0           5          60
QPF 12hr                      0           0           0           0        0.41
Snow 12hr                 00-00       00-00       00-00
Rain shwrs        S                                               C  C  L  L  L
Sprinkles      C     C
Tstms                                                             C  C  C  C  C
Wind           Y  Y


Date           05/19  Tue 05/20/25  Wed 05/21/25  Thu 05/22/25  Fri 05/23/25
CDT 6hrly     13 19   01 07 13 19   01 07 13 19   01 07 13 19   01 07 13 19
UTC 6hrly     18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Max/Min          65      52    62      45    62      45    69      48    73
Temp          59 62   56 54 58 56   49 46 56 61   50 47 63 67   54 51 67 71
Dewpt         50 50   51 51 52 46   43 40 41 40   40 38 42 44   44 45 48 48
PWind dir         E       E     E      NE     N      NW    NW       S     S
Wind char        BZ      BZ    BZ      GN    GN      LT    GN      LT    LT
Avg clouds    B2 B2   OV OV B2 B2   B2 B2 B1 B1   SC SC SC SC   SC SC SC SC
PoP 12hr         70      90    90      70    40      20    10      10    20
Rain shwrs     L  L    D  D  D  D    L  C  C  S    S                   S  S
Tstms          C  C    C  C  C  C    S  S

$$
IAZ039-170900-
Waterloo/Cedar Falls-Black Hawk IA
42.55N  92.40W Elev. 865 ft
244 PM CDT Fri May 16 2025

Date           05/16/25      Sat 05/17/25            Sun 05/18/25            Mon
CDT 3hrly     16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07
UTC 3hrly     21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12

Min/Max                      46          64          41          72          48
Temp          74 62 54 50 49 48 51 59 63 61 51 47 43 43 55 64 71 69 60 56 52 49
Dewpt         39 42 42 41 39 38 39 40 40 40 39 38 37 36 39 41 42 43 44 44 43 41
RH            28 48 64 71 68 68 63 49 43 46 63 71 79 76 55 43 35 39 55 64 71 74
Wind dir       W  W  W  W  W  W NW NW NW NW NW NW NW  N  N NE  E  E  E  E  E  E
Wind spd      31 27 24 23 21 20 20 19 19 14  9  5  5  5  5  5  8 10 11 13 17 18
Wind gust     42 40 35                                                       28
Clouds        B2 OV B2 OV B2 B2 B2 B1 SC FW FW FW FW FW FW SC FW SC SC B1 B2 B2
PoP 12hr                     30           0           0           0          40
QPF 12hr                      0           0           0           0        0.19
Snow 12hr                 00-00       00-00       00-00
Rain shwrs     S  C  S                                                  C  C  C
Sprinkles               C
Tstms                                                                   C  C  C


Date           05/19  Tue 05/20/25  Wed 05/21/25  Thu 05/22/25  Fri 05/23/25
CDT 6hrly     13 19   01 07 13 19   01 07 13 19   01 07 13 19   01 07 13 19
UTC 6hrly     18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Max/Min          63      46    58      44    64      43    69      46    71
Temp          57 59   51 48 53 53   47 44 58 61   48 45 63 66   52 49 67 68
Dewpt         43 44   43 43 44 41   39 37 39 40   37 37 40 43   42 43 47 47
PWind dir         E       E     E      NE    NE       N    NW      SE     S
Wind char        BZ      BZ    BZ      BZ    BZ      GN    GN      LT    GN
Avg clouds    B2 B2   B2 OV B2 B2   B2 B2 B1 SC   SC SC SC SC   SC SC SC SC
PoP 12hr         50      80    90      70    40      20    10      10    20
Rain shwrs     C  C    L  D  D  D    L  L  C  S    S                      S
Tstms          C  C    C  C  S  C    S

$$
IAZ048-170900-
Ames-Story IA
41.99N  93.62W Elev. 936 ft
244 PM CDT Fri May 16 2025

Date           05/16/25      Sat 05/17/25            Sun 05/18/25            Mon
CDT 3hrly     16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07
UTC 3hrly     21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12

Min/Max                      46          66          41          73          50
Temp          71 60 53 49 47 47 51 60 66 65 53 48 44 43 55 65 71 70 62 58 55 52
Dewpt         40 42 41 40 38 38 39 40 41 41 40 39 38 37 40 41 42 43 45 46 47 47
RH            32 51 64 71 71 71 63 47 40 41 61 71 79 79 57 41 35 38 54 64 74 83
Wind dir       W  W  W  W  W NW NW NW NW NW  N  N  N  N NE  E  E  E  E  E  E  E
Wind spd      31 27 24 21 20 18 18 18 16 12  6  5  4  5  6  6 11 12 12 14 18 19
Wind gust     43 40 36 32
Clouds        OV OV B2 B2 B2 B2 B1 SC FW FW FW FW SC FW FW FW SC SC B1 B2 B2 B2
PoP 12hr                     20           0           0           5          60
QPF 12hr                      0           0           0           0        0.32
Snow 12hr                 00-00       00-00       00-00
Rain shwrs     S  S                                               C  C  L  L  L
Sprinkles            C
Tstms                                                             C  C  C  C  C
Wind           Y  Y


Date           05/19  Tue 05/20/25  Wed 05/21/25  Thu 05/22/25  Fri 05/23/25
CDT 6hrly     13 19   01 07 13 19   01 07 13 19   01 07 13 19   01 07 13 19
UTC 6hrly     18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Max/Min          63      48    58      43    62      43    69      47    72
Temp          57 60   53 51 54 53   46 44 56 60   48 45 63 67   52 49 67 69
Dewpt         49 49   49 49 49 46   42 40 41 41   39 38 43 44   45 45 49 50
PWind dir         E       E     E      NE     N       N    NW      SE     S
Wind char        BZ      BZ    BZ      BZ    BZ      LT    GN      LT    LT
Avg clouds    B2 B2   OV OV B2 B2   B2 B2 B1 SC   SC SC SC SC   SC SC SC SC
PoP 12hr         70      90    90      80    40      20    10      10    20
Rain shwrs     L  L    D  D  D  D    D  C  C  S    S                   S  S
Tstms          C  C    C  C  C  C    S

$$
IAZ004-170900-
Estherville-Emmet IA
43.40N  94.75W Elev. 1315 ft
244 PM CDT Fri May 16 2025

Date           05/16/25      Sat 05/17/25            Sun 05/18/25            Mon
CDT 3hrly     16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07
UTC 3hrly     21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12

Min/Max                      41          60          37          68          46
Temp          52 50 47 44 43 42 47 54 59 57 47 41 38 38 50 60 66 65 57 52 49 48
Dewpt         43 41 40 38 35 34 35 36 37 36 35 34 33 32 34 35 36 38 40 40 40 40
RH            71 71 76 79 73 73 63 50 44 45 63 76 82 79 54 39 33 37 53 63 71 74
Wind dir       W  W  W NW NW NW NW NW NW  N  N  N  N  N NE NE  E  E  E  E  E  E
Wind spd      32 29 26 23 23 21 21 19 19 14 10  6  6  9  9 10 13 17 16 18 19 20
Wind gust     43 40 36 33
Clouds        OV OV OV OV OV OV B2 B2 SC FW FW FW FW SC SC SC B1 SC B2 B2 B2 OV
PoP 12hr                     40           0           0           5          50
QPF 12hr                      0           0           0           0        0.14
Snow 12hr                 00-00       00-00       00-00
Rain shwrs     D  C  S                                            S  S  C  C  L
Sprinkles               C
Tstms                                                             S  S  C  C  C
Wind chill          39 35 34 34                      32
Min chill              35    31    34          36    32    36                39
Wind           Y  Y


Date           05/19  Tue 05/20/25  Wed 05/21/25  Thu 05/22/25  Fri 05/23/25
CDT 6hrly     13 19   01 07 13 19   01 07 13 19   01 07 13 19   01 07 13 19
UTC 6hrly     18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Max/Min          60      42    55      39    63      41    69      46    71
Temp          54 56   48 43 50 51   43 40 56 60   46 43 64 66   50 48 67 68
Dewpt         43 44   41 38 42 39   35 33 36 35   34 34 38 39   40 40 45 45
PWind dir         E       E    NE      NE     N       N     W       S     S
Wind char        WY      BZ    BZ      BZ    BZ      GN    GN      LT    GN
Avg clouds    B2 B2   OV OV B2 B2   OV B2 B1 B1   SC SC SC SC   SC SC SC SC
PoP 12hr         80      90    90      70    30      20    10      20    30
Rain shwrs     L  D    D  D  D  D    L  C  C  S    S                S  S  C
Tstms          C  C    C  C  S  S

$$
IAZ035-170900-
Fort Dodge-Webster IA
42.55N  94.18W Elev. 1165 ft
244 PM CDT Fri May 16 2025

Date           05/16/25      Sat 05/17/25            Sun 05/18/25            Mon
CDT 3hrly     16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07
UTC 3hrly     21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12

Min/Max                      44          65          40          72          48
Temp          61 54 50 46 45 45 50 58 64 63 51 45 41 41 52 63 70 69 60 56 53 51
Dewpt         41 41 40 39 37 37 36 38 39 39 38 36 35 34 36 38 39 41 42 43 44 45
RH            48 61 68 76 73 73 58 47 40 41 61 70 79 76 54 39 32 36 51 62 71 80
Wind dir       W  W  W  W NW NW NW NW NW NW  N  N  N  N NE  E  E  E  E  E  E  E
Wind spd      32 26 23 20 19 18 18 17 16 12  6  5  5  5  5  6 11 12 12 14 17 18
Wind gust     43 39 34 32
Clouds        OV OV OV OV B2 OV B2 SC FW FW FW FW FW FW SC SC SC SC B1 B2 B2 OV
PoP 12hr                     40           0           0           5          60
QPF 12hr                      0           0           0           0        0.33
Snow 12hr                 00-00       00-00       00-00
Rain shwrs     C  C  S                                            C  C  L  L  L
Tstms                                                             C  C  C  C  C
Wind chill             39 37 38
Min chill              38    36    39                35
Wind           Y  Y


Date           05/19  Tue 05/20/25  Wed 05/21/25  Thu 05/22/25  Fri 05/23/25
CDT 6hrly     13 19   01 07 13 19   01 07 13 19   01 07 13 19   01 07 13 19
UTC 6hrly     18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Max/Min          62      44    56      41    62      42    69      46    72
Temp          56 59   51 47 52 52   44 42 56 61   46 44 64 66   50 48 67 69
Dewpt         46 47   45 44 45 43   38 36 38 38   37 36 40 42   42 43 47 47
PWind dir         E       E     E      NE     N       N    NW      SE     S
Wind char        BZ      BZ    BZ      GN    GN      LT    GN      LT    LT
Avg clouds    B2 B2   OV OV B2 B2   OV B2 B1 SC   SC SC SC SC   SC SC SC SC
PoP 12hr         70      90    90      80    40      20    10      20    20
Rain shwrs     L  L    D  D  D  D    D  C  C  S    S                S  S  S
Tstms          C  C    C  C  S  C                                         S

$$
IAZ094-170900-
Lamoni-Decatur IA
40.63N  93.90W Elev. 1125 ft
244 PM CDT Fri May 16 2025

Date           05/16/25      Sat 05/17/25            Sun 05/18/25            Mon
CDT 3hrly     16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07
UTC 3hrly     21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12

Min/Max                      48          71          46          75          57
Temp          75 66 58 53 50 49 56 66 71 70 58 53 48 47 58 69 74 72 66 63 60 60
Dewpt         42 42 39 39 39 39 41 43 44 44 43 42 40 39 43 45 46 48 49 52 56 57
RH            31 42 49 59 66 68 57 43 38 39 57 66 74 74 57 42 37 42 54 67 87 90
Wind dir       W  W  W  W NW NW NW NW NW NW  N  N NE NE  E  E  E  E  E  E  E  E
Wind spd      25 24 19 17 16 13 16 16 13  9  5  4  8  9 10 11 12 12 12 11 13 13
Wind gust     37 37 33 27                                                    24
Clouds        SC B2 B1 SC SC SC FW FW FW FW FW SC SC FW FW FW SC B1 B2 B2 OV B2
PoP 12hr                      5           0           0          20          80
QPF 12hr                      0           0           0        0.01        0.59
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                                                  S  S  C  C  D  D  L
Tstms                                                       S  S  C  C  C  C  C


Date           05/19  Tue 05/20/25  Wed 05/21/25  Thu 05/22/25  Fri 05/23/25
CDT 6hrly     13 19   01 07 13 19   01 07 13 19   01 07 13 19   01 07 13 19
UTC 6hrly     18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Max/Min          69      55    66      45    59      44    67      47    72
Temp          65 65   61 56 63 58   50 46 54 58   48 45 63 65   52 50 68 70
Dewpt         58 57   56 55 56 50   44 43 42 42   41 40 43 45   44 45 50 51
PWind dir         E       E    NE       N     N      NW    NW      SE     S
Wind char        BZ      GN    GN      GN    GN      GN    GN      LT    LT
Avg clouds    B2 B2   OV OV B2 B2   B2 B2 B1 B1   SC SC FW FW   SC SC SC SC
PoP 12hr         70     100    80      70    40      20    10      10    20
Rain shwrs     L  L    D  D  D  D    L  L  C  S    S                   S
Tstms          C  C    C  C  C  C    S  S

$$
IAZ017-170900-
Mason City-Cerro Gordo IA
43.16N  93.33W Elev. 1189 ft
244 PM CDT Fri May 16 2025

Date           05/16/25      Sat 05/17/25            Sun 05/18/25            Mon
CDT 3hrly     16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07
UTC 3hrly     21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12

Min/Max                      43          60          38          69          46
Temp          62 53 50 47 45 44 47 54 59 57 47 43 40 40 51 60 67 66 56 52 49 47
Dewpt         39 42 40 40 37 35 36 37 38 38 37 36 34 33 36 39 40 41 41 42 40 40
RH            43 66 68 76 73 70 65 52 45 49 68 76 79 76 56 46 37 40 57 69 71 76
Wind dir       W  W  W  W NW NW NW NW NW NW NW NW NW  N  N NE  E  E  E  E  E  E
Wind spd      34 28 25 24 23 21 20 20 20 14  9  6  5  5  5  6  9 11 12 14 18 20
Wind gust     44 40 36 34
Clouds        OV OV OV OV OV B2 B2 B1 SC FW FW FW FW FW FW SC SC SC SC B1 B2 B2
PoP 12hr                     50           0           0           0          40
QPF 12hr                   0.01           0           0           0        0.18
Snow 12hr                 00-00       00-00       00-00
Rain shwrs     L  C  C  S                                         S  S  C  C  L
Tstms                                                             S  S  C  C  C
Wind chill             39 36 36
Min chill              39    34    36          38    34    38
Wind           Y  Y


Date           05/19  Tue 05/20/25  Wed 05/21/25  Thu 05/22/25  Fri 05/23/25
CDT 6hrly     13 19   01 07 13 19   01 07 13 19   01 07 13 19   01 07 13 19
UTC 6hrly     18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Max/Min          61      42    55      40    63      41    68      45    70
Temp          54 57   48 45 50 51   44 42 57 61   46 43 63 64   49 48 65 67
Dewpt         41 44   40 39 42 39   36 34 38 37   35 34 39 41   40 41 45 45
PWind dir         E       E     E      NE    NE       N    NW      SE     S
Wind char        BZ      BZ    BZ      BZ    BZ      GN    GN      LT    GN
Avg clouds    B2 B2   B2 B2 B2 B2   B2 B2 B1 SC   SC SC SC SC   SC SC SC SC
PoP 12hr         60      90    90      80    30      20    10      10    20
Rain shwrs     L  L    L  D  D  D    D  L  C  S    S                      S
Tstms          C  C    C  C  S  S

$$
IAZ049-170900-
Marshalltown-Marshall IA
42.11N  92.91W Elev. 972 ft
244 PM CDT Fri May 16 2025

Date           05/16/25      Sat 05/17/25            Sun 05/18/25            Mon
CDT 3hrly     16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07
UTC 3hrly     21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12

Min/Max                      46          66          40          72          48
Temp          72 61 52 49 47 47 51 60 65 63 52 46 42 42 55 64 71 69 60 56 53 50
Dewpt         41 42 41 40 38 38 39 40 40 40 39 38 36 35 39 40 41 43 44 45 45 43
RH            33 49 66 71 71 71 63 47 40 43 61 73 79 76 55 41 34 39 55 66 74 77
Wind dir       W  W  W  W  W NW NW NW NW NW  N  N  N  N NE  E  E  E  E  E  E  E
Wind spd      29 27 23 21 20 19 19 18 17 12  6  4  5  5  5  5  8 10 10 12 16 18
Wind gust     42 40 35
Clouds        B2 OV B2 B2 B2 B2 B1 SC FW FW FW FW FW FW FW FW FW SC B1 B2 B2 B2
PoP 12hr                     30           0           0           0          50
QPF 12hr                      0           0           0           0        0.23
Snow 12hr                 00-00       00-00       00-00
Rain shwrs        C  S                                            C  C  C  C  L
Sprinkles      C
Tstms                                                             C  C  C  C  C


Date           05/19  Tue 05/20/25  Wed 05/21/25  Thu 05/22/25  Fri 05/23/25
CDT 6hrly     13 19   01 07 13 19   01 07 13 19   01 07 13 19   01 07 13 19
UTC 6hrly     18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Max/Min          63      47    58      42    62      42    68      45    71
Temp          56 59   51 49 53 52   45 42 56 59   47 44 63 64   50 48 67 68
Dewpt         46 47   45 46 47 44   40 37 40 40   38 37 41 44   42 43 47 48
PWind dir         E       E     E      NE     N       N    NW       S     S
Wind char        BZ      BZ    BZ      BZ    BZ      LT    GN      LT    LT
Avg clouds    B2 B2   OV OV B2 B2   B2 B2 B1 B1   SC SC SC SC   SC SC SC SC
PoP 12hr         60      90    90      80    40      20    10      10    20
Rain shwrs     L  L    D  D  D  D    D  L  C  C    S                      S
Tstms          C  C    C  C  C  C    S

$$
IAZ086-170900-
Ottumwa-Wapello IA
41.11N  92.45W Elev. 836 ft
244 PM CDT Fri May 16 2025

Date           05/16/25      Sat 05/17/25            Sun 05/18/25            Mon
CDT 3hrly     16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07
UTC 3hrly     21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12

Min/Max                      48          68          45          75          53
Temp          79 68 59 53 50 50 55 62 68 68 56 51 46 46 57 68 73 72 65 61 58 55
Dewpt         45 43 41 40 39 40 41 43 43 44 43 42 40 39 42 44 44 45 47 47 49 48
RH            30 40 51 61 66 68 59 50 40 42 62 71 79 76 57 42 35 38 52 60 72 77
Wind dir       W  W  W  W  W  W  W  W NW NW NW  N  N  N NE  E  E  E  E  E  E  E
Wind spd      24 24 21 19 18 18 18 18 17 12  6  5  5  6  5  6 10 10 10 11 14 17
Wind gust     36 37 34 29                                                 25 28
Clouds        SC B2 B2 B1 SC B1 B1 SC FW FW FW FW FW FW FW FW FW SC B1 B2 B2 B2
PoP 12hr                     10           0           0           5          60
QPF 12hr                      0           0           0           0        0.53
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                                                        C  C  L  L  L
Tstms                                                             C  C  C  C  C


Date           05/19  Tue 05/20/25  Wed 05/21/25  Thu 05/22/25  Fri 05/23/25
CDT 6hrly     13 19   01 07 13 19   01 07 13 19   01 07 13 19   01 07 13 19
UTC 6hrly     18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

Max/Min          68      53    63      46    62      45    68      48    73
Temp          61 64   59 56 60 58   51 47 56 61   49 47 63 66   53 50 68 70
Dewpt         51 52   53 53 54 49   45 42 42 41   41 40 44 45   45 45 50 50
PWind dir         E       E     E      NE     N       N    NW      SW     S
Wind char        BZ      BZ    BZ      BZ    BZ      GN    GN      LT    GN
Avg clouds    B2 B2   OV B2 B2 B2   B2 B2 B2 B1   SC SC SC FW   SC SC SC SC
PoP 12hr         60      90    90      70    40      20    10      10    20
Rain shwrs     L  L    D  D  D  D    L  L  C  C    S                      S
Tstms          C  C    C  C  C  C    S  S

$$