Point Forecast Matrices
Issued by NWS Billings, MT

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Point Forecast Matrices
National Weather Service Billings MT
115 AM MST Mon Dec 1 2025

MTZ235-012300-
Billings-Yellowstone MT
45.81N 108.53W Elev. 3648 ft
115 AM MST Mon Dec 1 2025

Date                Mon 12/01/25            Tue 12/02/25            Wed 12/03/25
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                      32          25          38          18          30
Temp           9 14 15 25 32 29 28 29 30 31 31 34 37 36 33 30 26 22 18 23 30 26
Dewpt          0  6 12 14 16 16 17 19 20 25 27 28 32 31 29 27 23 19 17 22 24 19
RH            66 70 88 62 51 58 63 66 66 78 85 78 82 82 85 88 88 88 96 96 78 74
Wind dir      SW SW SW SW SW SW SW SW SW  W  W  W  W NW NW  N  N  N SE SW SW SW
Wind spd      17 19 19 19 17 17 17 17 18 17 16 12 12 10 10 11 11  9  6  5  5  9
Clouds        FW SC SC SC SC B1 B2 OV B2 B2 OV OV B2 OV OV OV OV OV B2 SC FW FW
PoP 12hr                      0          20          50          50           5
QPF 12hr                      0           0        0.06        0.08           0
Snow 12hr                 00-00       00-00           T
Rain                                            C  C  C
Snow                                S     C  C  C  C  C  C  C  C
Obvis            BS BS BS BS BS BS BS BS BS
Wind chill    -9 -4 -2 11 20 17 16 17 17 20 20                15
Min chill        -9    -2    15    16    14    18    27    20    12     8    16


Date               Thu 12/04/25  Fri 12/05/25  Sat 12/06/25  Sun 12/07/25
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            19    36      26    39      22    32      16    36
Temp          24   25 31 33 31   30 34 36 35   28 25 25 20   20 30 32
Dewpt         15   16 25 24 22   22 29 28 27   23 24 21 15   15 26 24
PWind dir          SW    SW      SW    SW      SW    NE       S    SW
Wind char          BZ    BZ      BZ    BZ      BZ    GN      GN    GN
Avg clouds    FW   SC B1 SC B2   B2 B2 B2 B2   B2 B2 B2 B2   B1 B1 B1
PoP 12hr            0     5      30    30      40    50      30     5
Rain                                    C  C    C
Snow                         C    C     C  C    C  C  C  C

$$
MTZ065-012300-
Livingston-Park MT
45.70N 110.47W Elev. 4656 ft
115 AM MST Mon Dec 1 2025

Date                Mon 12/01/25            Tue 12/02/25            Wed 12/03/25
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                      37          26          38          17          35
Temp           9 13 15 26 35 34 31 30 30 31 31 35 37 34 30 28 25 21 18 29 34 27
Dewpt          3  7  9 11 15 17 20 21 21 23 23 25 27 26 24 22 19 15 13 19 21 16
RH            76 76 77 52 43 49 63 69 69 72 72 66 67 72 78 78 78 77 80 66 58 63
Wind dir       W  W  W  W  W  W  W  W  W SW  W  W  W NW NW NW  W  W  W  W  W  W
Wind spd      14 18 19 20 20 25 34 37 34 33 25 18 14  9 10 10  9  9  9  8  9 11
Wind gust                    35 48 52 48 47 35
Clouds        FW SC B1 SC B1 B1 OV B2 B1 B2 B2 B2 B2 OV OV OV B2 B2 B1 SC FW FW
PoP 12hr                      0          40          50          50           5
QPF 12hr                      0           0        0.02        0.01           0
Snow 12hr                 00-00       00-00           T
Snow                             C  S  S  C  C  C  C  C  C  S  S
Obvis            BS BS BS
Wind chill    -7 -5 -2 12 24 21 16 13 14 16 17 24                    7
Min chill        -7    -3    19    13    11    15    26    19    11     7    17


Date               Thu 12/04/25  Fri 12/05/25  Sat 12/06/25  Sun 12/07/25
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            21    39      26    42      26    38      22    40
Temp          23   24 32 34 31   29 36 38 36   31 33 32 28   25 34 35
Dewpt         12   14 21 21 21   22 26 26 26   23 25 20 19   17 23 20
PWind dir          SW    SW      SW    SW      SW     W      SW    SW
Wind char          BZ    BZ      BZ    BZ      WY    BZ      BZ    BZ
Avg clouds    SC   B1 B1 SC B2   B2 B2 B2 B2   B2 B2 B2 B2   B2 B1 B1
PoP 12hr            0    10      40    40      50    50      20    10
Rain                                    C  C    C
Snow                         C    C  C  C  C    S  C  C  S

$$
MTZ032-012300-
Miles City-Custer MT
46.42N 105.90W Elev. 2628 ft
115 AM MST Mon Dec 1 2025

Date                Mon 12/01/25            Tue 12/02/25            Wed 12/03/25
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                      27          19          36          10          19
Temp          -5 -2  3 18 26 20 19 23 26 30 31 34 36 33 29 26 20 13 10 15 19 15
Dewpt         -5 -2  2 11 16 17 15 17 22 27 30 32 32 30 28 25 18 12  9 10 13 13
RH           100100 95 73 65 88 84 77 85 88 96 92 85 89 96 96 92 96 96 80 77 92
Wind dir      SW  W SW  W  W SW SW SW  W  W  W  W  W NW NW  N  N  N  N  W SW  S
Wind spd       8  9  8  9  9  8  9 11 13 13 12 13 16 12 13 13 11  9  5  4  4  5
Clouds        SC SC B1 SC FW SC B2 OV OV OV B2 OV B2 OV OV OV OV B2 B2 B1 SC SC
PoP 12hr                      0          20          50          40           0
QPF 12hr                      0           0        0.04           0           0
Snow 12hr                 00-00       00-00           T
Rain                                            C  C
Snow                                   S  C  C  C  C  C  C  S  S
Wind chill   -20-17-11  7          11 14 19             18 14  8  1
Min chill       -20   -16    10     9     9    19    24    14     1    -2     7


Date               Thu 12/04/25  Fri 12/05/25  Sat 12/06/25  Sun 12/07/25
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            10    34      23    35      14    24       6    29
Temp          14   18 31 29 28   27 32 31 29   20 17 17 11    8 19 22
Dewpt         12   14 26 26 26   26 30 30 28   20 16 15 10    8 18 20
PWind dir           S     W       W     W      SW     N      NE    SE
Wind char          GN    GN      GN    GN      GN    GN      LT    LT
Avg clouds    SC   SC B1 SC B2   B2 B2 B2 B2   B2 OV B2 B2   B2 B1 B1
PoP 12hr            0     0      30    20      60    40      30     5
Rain                                       L
Snow                         C    C     S  L    L  C  C  C    S

$$
MTZ033-012300-
Baker-Fallon MT
46.38N 104.24W Elev. 2969 ft
115 AM MST Mon Dec 1 2025

Date                Mon 12/01/25            Tue 12/02/25            Wed 12/03/25
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                      24          13          35           2          17
Temp          -9 -3  1 14 22 18 17 18 22 27 28 34 35 31 25 20 13  8  3 10 15 11
Dewpt        -11 -7 -1  5 11 12 13 14 17 24 27 30 31 30 25 19 12  6  3  6 10  8
RH            91 82 91 67 62 77 84 84 81 88 96 85 85 96100 96 96 91100 83 80 87
Wind dir       W  W  W  W  W  W SW SW  W  W  W  W  W NW NW NW  N  N NW  W  W SW
Wind spd      10 12 12 16 14 10 10 11 13 14 14 18 18 17 17 16 13 11  6  6  8  8
Clouds        FW SC SC FW FW FW B1 B2 B2 OV B2 B2 OV OV OV OV B2 B2 B2 B1 SC SC
PoP 12hr                      0          20          30          30           0
QPF 12hr                      0           0        0.07        0.02           0
Snow 12hr                 00-00       00-00           T
Snow                                      S  S  C  C  C  C  C  C
Obvis                                       BS
Wind chill   -27-22-17 -2  8  7  4  6  9 15 17 23 24 20 12  6 -2 -8 -9 -1    -1
Min chill       -27   -22     3     4     3    13    20     6    -8   -13    -1


Date               Thu 12/04/25  Fri 12/05/25  Sat 12/06/25  Sun 12/07/25
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             3    33      19    33      11    23       2    28
Temp          11   16 29 28 26   24 31 28 23   19 18 14  7    6 21 21
Dewpt          9   12 24 24 25   23 28 27 23   18 16 14  7    5 17 19
PWind dir          SW     W       W     W      SW    NW       E     S
Wind char          GN    BZ      GN    BZ      GN    GN      GN    GN
Avg clouds    SC   SC B1 SC B2   B2 B2 B2 B2   B2 OV B2 B2   B2 B2 B1
PoP 12hr            0     0      30    20      60    30      30     5
Snow                              C     S  C    L  C  S  C    C

$$
WYZ199-012300-
Sheridan-Sheridan WY
44.80N 106.96W Elev. 4019 ft
115 AM MST Mon Dec 1 2025

Date                Mon 12/01/25            Tue 12/02/25            Wed 12/03/25
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                      37          17          38          15          30
Temp          -1  5  9 29 36 27 23 22 22 24 26 36 38 32 28 26 23 19 16 25 30 23
Dewpt         -7  0  5 14 16 16 15 15 18 21 24 28 29 30 28 26 23 19 16 20 21 19
RH            75 79 83 53 43 63 71 74 84 88 92 72 70 92100100100100100 81 69 84
Wind dir       W  W  W NW NW SW  S  S  S SW SW NW NW NW NW NW NW NW NW NW NW SW
Wind spd      10 11 11  8  8  6  6  5  4  4  5  8 12 13 14 14 13 11  6  5  5  5
Clouds        FW SC SC FW FW B1 B1 B2 OV OV OV B2 B2 OV OV OV OV OV B2 B1 FW FW
PoP 12hr                      0          10          30          80          10
QPF 12hr                      0           0        0.02        0.06           0
Snow 12hr                 00-00       00-00       00-00
Rain                                            C  C
Snow                                      C  C  C  C  D  D  L  L
Wind chill   -17-11 -5                                  16 14 11  7
Min chill       -17   -10    19    12    11    17    23    14     7     3    15


Date               Thu 12/04/25  Fri 12/05/25  Sat 12/06/25  Sun 12/07/25
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            11    40      19    40      19    34      14    39
Temp          14   15 34 30 25   24 36 34 30   25 30 27 19   17 33 32
Dewpt         10   11 23 23 21   21 28 27 25   21 26 23 18   15 25 23
PWind dir          SW     W      SW     W      SW    NW       W    SW
Wind char          LT    GN      GN    GN      GN    GN      LT    LT
Avg clouds    FW   SC B1 SC B1   B2 B2 B1 B2   B2 B2 B1 B2   B2 B1 SC
PoP 12hr            0     5      40    30      50    50      40     5
Rain                                    S  C    C  C
Snow                         C    C  C  S  C    C  C  C  C    S

$$