Point Forecast Matrices
Issued by NWS Billings, MT

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FOUS55 KBYZ 070034
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Point Forecast Matrices
National Weather Service Billings MT
534 PM MST Sat Dec 6 2025

MTZ235-071100-
Billings-Yellowstone MT
45.81N 108.53W Elev. 3648 ft
534 PM MST Sat Dec 6 2025

Date          Sat 12/06/25      Sun 12/07/25            Mon 12/08/25         Tue
MST 3hrly     14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05
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                      22          40          30          44          38
Temp                22 26 31 32 30 37 40 33 31 34 33 34 33 40 44 39 38 40 43 45
Dewpt               18 21 23 23 22 28 30 24 22 24 23 23 24 30 33 28 27 28 31 32
RH                  84 81 72 69 72 70 67 69 69 66 66 64 69 67 65 64 64 62 62 60
Wind dir             E  W  W  W SW  W  W SW SW SW SW SW SW SW SW SW SW SW SW SW
Wind spd             5 10 16 18 17 12 10 10 12 14 18 18 20 17 16 13 17 19 24 26
Wind gust                                                                    36
Clouds              OV B2 B2 SC B1 B2 SC SC B2 B1 SC FW SC B1 B2 OV OV OV OV B2
PoP 12hr                     80           5           0           0          10
QPF 12hr                   0.02           0           0           0           0
Snow 12hr                     T       00-00       00-00
Rain                                                                          S
Snowshwrs            C
Wind chill                20 21 18                22 23 21
Min chill        22    13    16    17    25    20    22    21    30    29


Date           12/09/25  Wed 12/10/25  Thu 12/11/25  Fri 12/12/25  Sat 12/13/25
MST 6hrly     11 17 23   05 11 17 23   05 11 17 23   05 11 17 23   05 11 17
UTC 6hrly     18 00 06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Max/Min          49      31    44      21    27      10    21      13    39
Temp          49 43 34   32 38 41 35   26 24 23 17   13 14 19 15   18 31 39
Dewpt         34 29 25   27 32 32 23   20 20 18 13    7 11 11  8   11 23 29
PWind dir         W       W     W      NW    NE      NE     E      SE    SW
Wind char        WY      BZ    GN      GN    GN      GN    LT      LT    GN
Avg clouds    B2 B2 B2   B2 OV B2 B1   B2 B2 B2 B2   B2 OV B1 B2   B2 B1 SC
PoP 12hr         40      50    70      50    50      40    30      20    10
Rain           S  C  C    C  L  L  C    C
Snow                 S    C  S  L  C    C  C  C  C    C  C  C  S

$$
MTZ065-071100-
Livingston-Park MT
45.70N 110.47W Elev. 4656 ft
534 PM MST Sat Dec 6 2025

Date          Sat 12/06/25      Sun 12/07/25            Mon 12/08/25         Tue
MST 3hrly     14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05
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                      28          41          32          46          39
Temp                34 28 30 30 28 37 41 32 32 35 35 35 35 43 46 44 39 43 45 50
Dewpt               23 16 17 18 16 24 27 19 20 23 22 22 22 29 31 29 26 29 31 35
RH                  64 60 58 60 60 59 57 58 61 61 59 59 59 57 55 55 59 57 58 56
Wind dir            SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW
Wind spd            19 21 25 25 21 18 18 17 21 32 39 32 31 28 27 25 40 44 48 48
Wind gust           34 35 39 39 33 29 28    35       44 43 40 39 35 56 63 67 67
Clouds              B2 B1 B1 B1 SC SC SC SC B2 B1 SC B1 B1 B2 B2 B2 OV OV B2 OV
PoP 12hr                     50           5          20          10          30
QPF 12hr                   0.01           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain                                                              S  S  C  C  L
Rain shwrs                                   S
Snowshwrs                                 S  S
Wind chill          23 14 16 16 14       21 19 21 20 21 21          26 31
Min chill        27    14    16    14    21    19    20    20          26


Date           12/09/25  Wed 12/10/25  Thu 12/11/25  Fri 12/12/25  Sat 12/13/25
MST 6hrly     11 17 23   05 11 17 23   05 11 17 23   05 11 17 23   05 11 17
UTC 6hrly     18 00 06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Max/Min          49      32    47      27    37      22    41      25    52
Temp          45 41 32   36 44 44 34   31 32 31 25   23 32 37 28   28 45 52
Dewpt         32 25 23   29 35 30 24   22 23 22 17   16 23 26 18   19 30 34
PWind dir         W      SW     W       W    SW       S    SW      SW    SW
Wind char        SD      BZ    BZ      BZ    GN      GN    GN      GN    BZ
Avg clouds    B2 B2 B2   OV OV B2 B2   B2 B2 B1 B2   B2 B2 B1 B1   B2 B1 SC
PoP 12hr         60      60    80      60    50      40    30      10    10
Rain           L  L  C    L  D  L  C    L  C  C          C  S
Snow              S  C    L  S  S  S    L  C  C  C    C  C  S

$$
MTZ032-071100-
Miles City-Custer MT
46.42N 105.90W Elev. 2628 ft
534 PM MST Sat Dec 6 2025

Date          Sat 12/06/25      Sun 12/07/25            Mon 12/08/25         Tue
MST 3hrly     14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05
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                       9          36          21          42          32
Temp                 9 10 14 15 21 32 36 23 21 24 29 31 34 39 42 34 32 34 38 40
Dewpt                8  9 13 14 20 30 32 20 18 19 24 26 28 33 35 30 29 30 35 36
RH                  96 96 96 96 96 92 85 88 88 81 81 81 78 79 76 85 88 85 89 85
Wind dir            NE  E SE  S  W  W  W SW  S SW SW  W  W  W  W SW SW SW SW SW
Wind spd             5  5  4  4  6 10  8  4  5  8 11 14 17 17 17 11 11 12 16 20
Clouds              B2 OV OV B2 SC FW FW B2 B1 B2 B1 SC B1 B1 B1 OV B2 OV OV OV
PoP 12hr                     60           5           0           0          40
QPF 12hr                   0.05           0           0           0           0
Snow 12hr                     1       00-00       00-00
Rain                                                                    C  C  C
Snowshwrs            S  L  C
Wind chill                                           20 23
Min chill         5    -1     2     6    17    13    18    21    26    23    27


Date           12/09/25  Wed 12/10/25  Thu 12/11/25  Fri 12/12/25  Sat 12/13/25
MST 6hrly     11 17 23   05 11 17 23   05 11 17 23   05 11 17 23   05 11 17
UTC 6hrly     18 00 06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Max/Min          47      22    37      11    17       0    11       2    27
Temp          46 39 24   23 33 31 26   15 14 13  9    2  6  7  2    4 15 26
Dewpt         37 30 22   21 30 27 22   11  9  7  4   -2  0  2  0    1 13 20
PWind dir         W       W    SW      NW     N       N     N       E    SE
Wind char        WY      GN    GN      GN    GN      LT    LT      LT    LT
Avg clouds    OV B1 B1   B1 OV B2 B1   B2 OV B2 B2   B2 B2 B2 B2   B2 B2 B1
PoP 12hr         30      20    50      50    30      30    20      30    10
Rain           C  S             C  C
Snow              S       S  C  C  C    C  C  S  C    C  S  S  C    S

$$
MTZ033-071100-
Baker-Fallon MT
46.38N 104.24W Elev. 2969 ft
534 PM MST Sat Dec 6 2025

Date          Sat 12/06/25      Sun 12/07/25            Mon 12/08/25         Tue
MST 3hrly     14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05
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                       4          33          16          41          29
Temp                 5  6 10 15 21 31 31 19 16 20 25 29 31 39 40 34 29 31 34 36
Dewpt                4  4  8 13 20 27 27 16 13 15 19 23 26 31 32 28 27 26 30 32
RH                  95 91 91 92 96 85 85 88 88 81 78 78 81 73 73 78 92 81 85 85
Wind dir             E SE SE SE SW  W  W  W SW SW SW SW  W  W  W  W  W SW SW SW
Wind spd             5  6  8  8  9 13 13  6  5  9 11 14 19 21 20 17 14 13 16 19
Wind gust                                                  32 31
Clouds              B2 B2 OV OV B2 FW FW B1 B2 B1 B2 B2 B1 SC B1 B2 B2 OV OV OV
PoP 12hr                     60          60           0           0          40
QPF 12hr                   0.04        0.01           0           0        0.03
Snow 12hr                     1           T       00-00
Rain                                                                    C  C  C
Snowshwrs               S  L  L  S
Wind chill          -6 -6 -2  4    20           9 14 18 19       23 18 20    25
Min chill        -2    -8    -6     5    10     7    11    18    23    18    22


Date           12/09/25  Wed 12/10/25  Thu 12/11/25  Fri 12/12/25  Sat 12/13/25
MST 6hrly     11 17 23   05 11 17 23   05 11 17 23   05 11 17 23   05 11 17
UTC 6hrly     18 00 06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Max/Min          44      14    32       7    17      -5     9      -3    23
Temp          44 33 16   14 28 26 20    9 13 11  2   -3  4  6 -1   -1 15 23
Dewpt         36 25 14   14 23 22 18    7  9  8  0   -5 -1  1 -4   -3 10 16
PWind dir         W      NW     S       W    NW      NW    NW      SE     S
Wind char        WY      BZ    GN      GN    GN      GN    GN      LT    GN
Avg clouds    OV B1 B1   B1 B2 B2 B2   B2 B2 B1 B2   B2 B2 B2 B2   B2 B2 B1
PoP 12hr         40      10    30      50    20      30    10      20    10
Rain           C
Snow                         S  C  C    C  S  S  S    C        S    S

$$
WYZ199-071100-
Sheridan-Sheridan WY
44.80N 106.96W Elev. 4019 ft
534 PM MST Sat Dec 6 2025

Date          Sat 12/06/25      Sun 12/07/25            Mon 12/08/25         Tue
MST 3hrly     14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05
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                      20          42          21          47          30
Temp                22 20 21 21 24 37 42 28 21 23 23 23 23 40 47 35 30 30 32 37
Dewpt               22 20 21 18 19 25 26 19 16 16 17 17 17 27 29 23 22 24 25 29
RH                 100100100 88 81 61 53 68 81 74 77 77 77 59 49 61 72 78 75 72
Wind dir            NE  S SW  W  W NW NW  S  S SW SW SW SW  W  W SW SW SW SW SW
Wind spd             2  2  4  6 10 10  8  6  8 10 11 11 13 10 10 10 14 16 17 17
Clouds              B2 B2 B1 B1 SC B1 SC B1 SC B2 SC FW SC SC B1 B2 B2 OV B2 B2
PoP 12hr                     40           5           0           0          10
QPF 12hr                   0.01           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain                                                                          S
Snowshwrs            C  C
Obvis               PF
Wind chill                      13             12 11 11 10          19 19 21
Min chill        26    20    13    11    21    11    11     9    27    19    19


Date           12/09/25  Wed 12/10/25  Thu 12/11/25  Fri 12/12/25  Sat 12/13/25
MST 6hrly     11 17 23   05 11 17 23   05 11 17 23   05 11 17 23   05 11 17
UTC 6hrly     18 00 06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Max/Min          52      24    44      19    29       9    28      12    44
Temp          52 37 25   26 38 39 30   23 28 23 15   11 22 22 16   15 35 44
Dewpt         37 27 21   23 32 32 25   19 22 19 14   10 17 16 12   11 25 30
PWind dir         W       W    SW      NW     N       N     N      SE    SW
Wind char        WY      GN    GN      GN    GN      LT    LT      LT    LT
Avg clouds    B2 B2 B2   B2 OV B2 B2   B1 B2 B2 B2   B2 B2 B1 B1   B1 SC FW
PoP 12hr         50      50    70      60    50      40    20      10     5
Rain           S  C  C       L  L  L    C
Snow                 C    C  L  S  L    C  C  C  C    C  S

$$