Point Forecast Matrices
Issued by NWS Billings, MT

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033
FOUS55 KBYZ 070920
PFMBYZ

Point Forecast Matrices
National Weather Service Billings MT
220 AM MST Sun Dec 7 2025

MTZ235-072300-
Billings-Yellowstone MT
45.81N 108.53W Elev. 3648 ft
220 AM MST Sun Dec 7 2025

Date                Sun 12/07/25            Mon 12/08/25            Tue 12/09/25
MST 3hrly     02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17
UTC 3hrly     09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00

Max/Min                      41          31          47          41          52
Temp             29 30 37 41 37 34 35 35 37 37 42 47 45 43 44 46 47 47 51 49 44
Dewpt            18 24 27 29 23 23 25 25 25 26 32 29 28 26 29 31 32 32 35 32 28
RH               63 78 67 62 56 64 66 66 61 64 67 49 51 51 55 55 56 56 54 52 53
Wind dir          W SW SW SW SW SW SW SW SW  W  W  W SW SW SW SW SW  W  W NW NW
Wind spd         18 17 14 11 10 12 14 18 18 20 16 16 11 17 19 24 26 31 33 28 16
Wind gust                                                        36 43 47 40
Clouds           B1 SC B2 B1 B1 B2 B2 FW FW SC B1 B2 OV OV OV OV B2 B2 B2 B2 B2
PoP 12hr                      0          10           0          10          30
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                                                        S  S  C  C  C
Wind chill       16 18                24 26 26
Min chill         9    18    30    25    21    25


Date               Wed 12/10/25  Thu 12/11/25  Fri 12/12/25  Sat 12/13/25
MST 6hrly     23   05 11 17 23   05 11 17 23   05 11 17 23   05 11 17
UTC 6hrly     06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Min/Max            31    44      19    26       6    18      10    33
Temp          37   34 37 39 34   24 21 17 13    7 10 16 15   19 27 31
Dewpt         27   28 34 32 25   17 15 11  6    1  5 10  8   13 21 22
PWind dir           W    SW      NW    NE      NE     E      SE    SW
Wind char          GN    GN      GN    GN      GN    LT      LT    GN
Avg clouds    B2   OV OV B2 B2   B2 B2 B2 B2   B2 OV B2 B2   B2 B2 B1
PoP 12hr           40    80      60    50      40    40      20    10
Rain shwrs     C    C  D  D  L
Snow                                 C  C  C    C  C  C  S    S
Snowshwrs      S    C  D     L    C

$$
MTZ065-072300-
Livingston-Park MT
45.70N 110.47W Elev. 4656 ft
220 AM MST Sun Dec 7 2025

Date                Sun 12/07/25            Mon 12/08/25            Tue 12/09/25
MST 3hrly     02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17
UTC 3hrly     09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00

Max/Min                      42          37          48          44          50
Temp             35 35 39 41 40 40 42 41 42 42 44 46 47 46 49 49 50 49 48 46 42
Dewpt            26 22 21 23 23 23 25 25 23 25 28 26 28 28 31 31 30 31 33 26 24
RH               69 59 48 48 50 50 50 52 46 50 53 45 47 49 50 50 46 50 56 45 48
Wind dir         SW SW SW SW SW SW SW SW SW  W  W SW SW SW SW SW SW  W  W  W  W
Wind spd         25 23 24 23 26 34 41 41 39 36 35 34 39 46 51 54 52 44 37 33 23
Wind gust        36          36 48 57 57 55 51 49 48 55 64 72 73 72 63 52 47
Clouds           B1 SC SC SC B1 B2 B1 SC SC B1 B1 B1 B2 B2 OV B2 B2 B2 B2 B2 B2
PoP 12hr                     10          30          10          40          60
QPF 12hr                      0           0           0           0        0.02
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                       S                    C  C  C  C  L  L  C  C  C
Snowshwrs                     C  S
Wind chill       22 23 28    29 28 29 29 30 30
Min chill        20    22    29    28    26    30
High Wind                                             A  A  A  A  A  A
Wind                             Y  Y  Y  Y  Y  Y  Y


Date               Wed 12/10/25  Thu 12/11/25  Fri 12/12/25  Sat 12/13/25
MST 6hrly     23   05 11 17 23   05 11 17 23   05 11 17 23   05 11 17
UTC 6hrly     06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Min/Max            32    48      23    31      14    37      27    47
Temp          36   36 45 43 35   29 27 24 18   15 24 35 32   34 42 42
Dewpt         27   30 37 32 26   21 19 15 13   12 17 23 21   23 28 25
PWind dir           W    SW       W     W      SE    SW      SW    SW
Wind char          BZ    BZ      BZ    GN      GN    GN      BZ    BZ
Avg clouds    B2   OV OV OV B2   B2 B1 B1 B2   B2 B2 B2 B1   B2 B2 SC
PoP 12hr           70    90      60    50      40    30      20    10
Rain                                                  S  S
Rain shwrs     C    L  D  D  L    L
Snow                                 C  C  C    C  C  S  S
Snowshwrs      C    L        L    L

$$
MTZ032-072300-
Miles City-Custer MT
46.42N 105.90W Elev. 2628 ft
220 AM MST Sun Dec 7 2025

Date                Sun 12/07/25            Mon 12/08/25            Tue 12/09/25
MST 3hrly     02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17
UTC 3hrly     09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00

Max/Min                      35          21          42          32          47
Temp             15 20 31 33 28 24 25 29 33 33 39 42 38 35 35 37 40 43 46 42 36
Dewpt            14 19 28 29 26 22 23 26 29 29 33 35 34 32 32 33 36 36 37 31 27
RH               96 96 88 85 92 92 92 88 85 85 79 76 85 89 89 85 85 76 71 65 69
Wind dir          S  W  W  W SW  S  S SW  W  W  W  W  W SW SW SW  W  W  W NW NW
Wind spd          4  6 10  9  5  5  8 11 14 17 16 17 10 10 10 13 19 24 29 33 17
Wind gust                                                              42 46
Clouds           OV B1 FW FW B1 B1 OV B2 SC B1 B2 B2 B2 OV OV OV OV OV B2 SC B1
PoP 12hr                      5          20           0          40          20
QPF 12hr                      0           0           0        0.01        0.01
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                                                  C  C  S  S
Snow
Snowshwrs                           S
Wind chill                                  22                            31
Min chill         2     9    22    16    14    21    30    27    28          25


Date               Wed 12/10/25  Thu 12/11/25  Fri 12/12/25  Sat 12/13/25
MST 6hrly     23   05 11 17 23   05 11 17 23   05 11 17 23   05 11 17
UTC 6hrly     06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Min/Max            23    36       7    17      -5     8       0    20
Temp          30   25 31 31 24   13 11  7  2   -4  2  5  5    7 15 18
Dewpt         26   23 30 27 20    9  5  1 -3   -9 -3 -1  1    4 12 14
PWind dir           W    SE      NW    NW      NW     N       E     E
Wind char          GN    GN      GN    GN      GN    LT      LT    LT
Avg clouds    B1   B2 OV B2 B2   B2 B2 B2 B2   B1 B2 B2 B2   B2 OV B2
PoP 12hr           20    50      60    30      30    20      30    20
Rain shwrs                C  L
Snow                                 C  S  C    C  S  S  C    C
Snowshwrs           S  C  C  L    C                              S

$$
MTZ033-072300-
Baker-Fallon MT
46.38N 104.24W Elev. 2969 ft
220 AM MST Sun Dec 7 2025

Date                Sun 12/07/25            Mon 12/08/25            Tue 12/09/25
MST 3hrly     02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17
UTC 3hrly     09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00

Max/Min                      31          16          41          29          44
Temp             10 19 27 28 23 20 22 24 30 32 38 40 36 32 32 34 37 39 43 40 33
Dewpt             8 18 23 24 22 19 20 20 27 29 32 33 31 29 29 31 34 36 36 31 27
RH               91 96 85 85 96 96 92 84 88 88 79 76 82 88 88 89 89 89 76 70 78
Wind dir         SE SW  W  W  W SW SW SW SW  W  W  W  W  W SW SW SW  W  W NW NW
Wind spd          9  9 14 13  6  5  9 11 14 19 21 20 14 12 12 13 18 24 33 35 25
Wind gust                                         32                39 47 49 35
Clouds           OV OV B1 SC B1 B1 B2 B2 B2 B1 SC B1 B2 B2 OV OV OV OV B2 B1 SC
PoP 12hr                     40          10           0          40          30
QPF 12hr                   0.02           0           0        0.03        0.03
Snow 12hr                     T       00-00       00-00
Rain shwrs                                                  C  C  C  C
Snow              C
Wind chill       -3  8 15 17       11    19 20 27                   28    28 20
Min chill       -12     1    15    11     8    18    26    22    23    28    20


Date               Wed 12/10/25  Thu 12/11/25  Fri 12/12/25  Sat 12/13/25
MST 6hrly     23   05 11 17 23   05 11 17 23   05 11 17 23   05 11 17
UTC 6hrly     06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Min/Max            15    32       4    15     -12     4      -7    19
Temp          24   20 30 27 20   11 10  4 -4  -10  0  0 -1    3 14 16
Dewpt         21   18 24 24 19    8  6  0 -7  -14 -6 -4 -5   -1 10 12
PWind dir          NW     S      NW    NW      NW    NW       S     S
Wind char          GN    GN      GN    GN      GN    GN      GN    GN
Avg clouds    B1   B1 B2 B2 OV   OV OV B2 B1   B1 B1 B2 B2   B2 OV B2
PoP 12hr           10    40      60    20      20    20      30    10
Snow                                 S  S       S     S  S    C
Snowshwrs              S  C  L    C

$$
WYZ199-072300-
Sheridan-Sheridan WY
44.80N 106.96W Elev. 4019 ft
220 AM MST Sun Dec 7 2025

Date                Sun 12/07/25            Mon 12/08/25            Tue 12/09/25
MST 3hrly     02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17
UTC 3hrly     09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00

Max/Min                      42          21          47          29          53
Temp             24 27 38 41 34 27 26 26 27 28 41 46 39 33 32 34 38 40 51 47 38
Dewpt            22 23 25 25 26 21 21 21 22 23 28 29 28 26 26 27 30 31 34 32 27
RH               92 85 59 52 72 78 81 81 81 81 59 51 64 75 78 75 73 70 52 56 64
Wind dir          W  W NW NW  S  S SW SW SW SW  W  W SW SW SW SW SW  W  W NW NW
Wind spd          6 10 10  9  6  8 10 11 11 13  5 10  8 14 11 17 17 21 26 28 18
Wind gust                                                              36 40
Clouds           B1 B1 B1 B1 SC SC B2 SC FW FW SC B1 B2 OV OV OV B2 B2 B2 B2 B2
PoP 12hr                      5          10           0          20          40
QPF 12hr                      0           0           0           0        0.05
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                                                  S  S        C  C  C
Wind chill                            15    17                23
Min chill        15    15    28    16    12    14          22    23    29    28


Date               Wed 12/10/25  Thu 12/11/25  Fri 12/12/25  Sat 12/13/25
MST 6hrly     23   05 11 17 23   05 11 17 23   05 11 17 23   05 11 17
UTC 6hrly     06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Min/Max            25    44      18    28       5    24       9    40
Temp          31   28 38 38 31   21 24 18 12    6 16 19 14   18 34 33
Dewpt         24   25 33 32 29   19 19 14 10    5 13 14 11   15 24 23
PWind dir           W     S      NW     N       N     N       S    SW
Wind char          GN    LT      GN    GN      LT    LT      LT    LT
Avg clouds    B2   OV OV B2 B2   B2 B2 B1 B2   B2 B2 B2 B1   B1 B1 B1
PoP 12hr           60    80      70    50      40    30      20    10
Rain shwrs     C    L  L  D  L
Snow                                 C  C  C    C  C  S  S
Snowshwrs      C    L  L     L    L

$$