Point Forecast Matrices
Issued by NWS Great Falls, MT

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Point Forecast Matrices
National Weather Service Great Falls MT
846 PM MST Mon Dec 1 2025

MTZ312-021100-
Great Falls-Cascade MT
47.47N 111.38W Elev. 3663 ft
846 PM MST Mon Dec 1 2025

Date          Mon 12/01/25      Tue 12/02/25            Wed 12/03/25         Thu
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          35          16          33          23
Temp                   32 32 32 32 34 35 32 28 27 24 20 17 28 33 29 27 27 27 27
Dewpt                  23 25 29 29 31 32 28 25 23 20 16 14 23 25 21 20 18 18 18
RH                     69 75 88 88 89 89 85 88 85 84 84 88 81 72 72 74 68 68 68
Wind dir               SW SW SW SW  W  W NW NW NW NW  S  S SW SW SW SW SW SW SW
Wind spd               20 19 17 12  8  8  6  9  8  5  3  5  6 11 13 16 18 18 16
Wind gust              31
Clouds                 B2 OV OV OV OV OV OV OV OV OV B2 B1 FW FW SC B1 B1 B1 B1
PoP 12hr                     70          90          60           0           0
QPF 12hr                   0.04        0.21        0.04           0           0
Snow 12hr                     T           2           T
Snow                    S  L  L  D  D  L  L  L  L  L
Winter Weath                  Y  Y  Y  Y  Y  Y  Y  Y


Date           12/04/25  Fri 12/05/25  Sat 12/06/25  Sun 12/07/25  Mon 12/08/25
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          37      25    38      17    33      20    41      30    43
Temp          33 35 35   31 34 35 31   26 28 28 26   23 38 39 36   34 40 40
Dewpt         25 27 26   25 30 29 25   19 23 20 19   14 27 27 25   22 28 28
PWind dir        SW      SW    SW      SW     W      SW    SW      SW    SW
Wind char        BZ      BZ    GN      BZ    GN      GN    BZ      BZ    BZ
Avg clouds    SC B1 B2   B2 B2 B2 B2   B2 B2 B1 B1   B1 B1 B1 B1   SC B1 B1
PoP 12hr         10      30    50      50    50      20    10      10     5
Rain                            C  C    C
Snow                 C    C  C  C  C    C  C  S  S

$$
MTZ303-021100-
Cut Bank-Glacier MT
48.60N 112.39W Elev. 3838 ft
846 PM MST Mon Dec 1 2025

Date          Mon 12/01/25      Tue 12/02/25            Wed 12/03/25         Thu
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                      23          33           9          30          20
Temp                   28 27 28 27 30 32 29 23 20 17 13 10 22 29 26 23 24 24 25
Dewpt                  20 20 25 24 27 29 26 22 18 14 11  8 19 24 20 17 17 17 19
RH                     71 74 88 88 88 88 88 96 92 88 91 91 88 81 78 77 74 74 78
Wind dir                W  W  W  W  W NW NW NW NW  W  S SW SW SW  W  W  W  W  W
Wind spd               25 23 19 18 14 13 12 10  5  4  4  5  9 13 16 19 21 20 19
Wind gust              39 36 31    25 24                      25 26 31 34 33 32
Clouds                 OV OV OV B2 OV B2 B2 OV B2 B2 B1 B1 SC SC B1 B1 SC B1 SC
PoP 12hr                     40          70          30           0           0
QPF 12hr                   0.02        0.04        0.01           0           0
Snow 12hr                     T           T           T
Snow                    S  C  L  C  L  C  C  C  C  C
Obvis                  BS BS BS BS


Date           12/04/25  Fri 12/05/25  Sat 12/06/25  Sun 12/07/25  Mon 12/08/25
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          35      19    32       6    24      11    38      27    41
Temp          31 31 28   25 29 28 21   15 16 18 17   14 32 34 32   29 37 36
Dewpt         25 25 22   22 26 25 18   12 15 14 12   10 26 26 24   22 28 28
PWind dir         W       W     W       W    NW       W    SW       W     W
Wind char        BZ      BZ    GN      BZ    GN      GN    BZ      BZ    BZ
Avg clouds    B1 B1 B1   B1 B2 B2 B2   B2 B2 B1 B1   B1 B1 B1 B1   SC B1 B1
PoP 12hr          5      20    40      40    30      10    10      10     5
Snow                 S       S  C  C    C  C  C

$$
MTZ319-021100-
Helena-Lewis & Clark MT
46.61N 111.96W Elev. 3893 ft
846 PM MST Mon Dec 1 2025

Date          Mon 12/01/25      Tue 12/02/25            Wed 12/03/25         Thu
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                      25          34          16          32          19
Temp                   29 29 28 28 31 33 32 30 28 26 22 17 26 32 28 26 24 24 25
Dewpt                  21 22 23 24 28 28 27 25 23 21 19 15 22 23 20 18 17 17 19
RH                     72 75 81 85 88 82 81 81 81 81 88 92 85 69 71 71 74 74 78
Wind dir                S  S SW  W  W NW NW NW  W  W SW SW SW  W SW SW SW SW SW
Wind spd               10  6  5  5  3  4  5  5  4  2  2  2  2  4  6 10 10  8  6
Clouds                 OV OV B2 OV OV OV OV OV B2 B2 B2 B1 SC FW SC B1 B1 B2 B1
PoP 12hr                     70          80          50           5           0
QPF 12hr                   0.01        0.06        0.03           0           0
Snow 12hr                     T           1           T
Snow                    S  C  S  L  D  D  C  C  C  C
Winter Weath                  Y  Y  Y  Y  Y  Y  Y  Y


Date           12/04/25  Fri 12/05/25  Sat 12/06/25  Sun 12/07/25  Mon 12/08/25
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          37      26    39      27    39      23    41      26    42
Temp          31 35 35   31 35 38 36   32 34 36 33   25 34 38 33   30 36 40
Dewpt         24 24 26   25 30 29 28   26 29 26 24   18 27 25 23   22 28 26
PWind dir        SW      SW    SW       W     W      SW    SW      SW    SW
Wind char        LT      GN    LT      GN    GN      GN    GN      GN    GN
Avg clouds    B1 B1 B2   B2 B2 B2 B2   B2 B2 B1 B1   B1 B1 B1 B1   B1 B1 B1
PoP 12hr         20      40    60      60    60      20    20      20    10
Rain                            L  L    C  L  C  S          S  S
Snow              S  C    C  C  L  S    C  L  C  S          S  S

$$
MTZ326-021100-
Bozeman-Gallatin MT
45.78N 111.16W Elev. 4475 ft
846 PM MST Mon Dec 1 2025

Date          Mon 12/01/25      Tue 12/02/25            Wed 12/03/25         Thu
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                      21          34          15          32          14
Temp                   24 26 27 27 31 32 31 27 26 24 21 17 26 31 26 20 17 18 20
Dewpt                  21 23 25 26 28 29 28 26 25 23 19 16 22 23 19 14 13 13 15
RH                     88 88 92 96 88 88 88 96 96 96 92 96 85 72 74 77 84 80 81
Wind dir                E  E  E  S  N NW  N  W NW  W SW  S SW  W  S  S  S  S  S
Wind spd               10  9  6  6  3  4  3  3  2  2  1  2  1  2  4  6  8  6  5
Clouds                 OV OV OV B2 OV OV OV OV OV OV B2 B2 SC FW FW B1 B1 B1 B2
PoP 12hr                     60          80          40           0           0
QPF 12hr                   0.05        0.06        0.02           0           0
Snow 12hr                     T           1           T
Snow                    S  L  C  C  L  D  C  C  C  C


Date           12/04/25  Fri 12/05/25  Sat 12/06/25  Sun 12/07/25  Mon 12/08/25
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          36      21    39      27    41      18    39      21    41
Temp          30 33 30   27 34 37 34   32 35 36 27   20 33 35 29   26 34 38
Dewpt         24 24 25   22 30 29 28   27 30 26 22   15 25 23 22   20 25 25
PWind dir        SW       S    SW      SW     W      SW     S      SW    SW
Wind char        LT      GN    LT      GN    GN      GN    LT      GN    GN
Avg clouds    B2 B1 B2   OV B2 B2 B2   OV OV B2 B2   B1 B2 B2 B1   B1 B1 B1
PoP 12hr         20      40    60      60    50      20    10      20    10
Rain                            L  L    L  C  C  S
Snow              S  C    C  C  L  L    L  C  C  S             S

$$
MTZ330-021100-
West Yellowstone-Gallatin MT
44.69N 111.11W Elev. 6644 ft
846 PM MST Mon Dec 1 2025

Date          Mon 12/01/25      Tue 12/02/25            Wed 12/03/25         Thu
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                      14          28           5          28          10
Temp                   18 18 19 19 25 27 25 20 15 11  7  6 21 28 23 14 12 12 14
Dewpt                  14 15 16 17 21 21 20 18 14 10  6  4 14 15 14 10 10 10 12
RH                     84 88 88 92 84 78 81 92 96 96 96 91 74 58 68 84 91 91 92
Wind dir               SW SW SW SW SW SW SW  N  N  N  N NE  N  W SW SW SW SW SW
Wind spd               13 11  9  6  6  6  2  2  3  2  2  1  1  3  3  4  4  3  3
Wind gust              25
Clouds                 OV OV OV OV OV B2 B2 B2 B1 B1 B1 SC FW FW FW SC B2 B2 OV
PoP 12hr                     70          80          40           0           5
QPF 12hr                   0.04        0.04        0.01           0           0
Snow 12hr                     1           1           T
Snow                    C  C  L  L  D  D  C  C  C  C                          C
Winter Weath            Y  Y  Y  Y  Y  Y  Y  Y  Y  Y


Date           12/04/25  Fri 12/05/25  Sat 12/06/25  Sun 12/07/25  Mon 12/08/25
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          25      16    31      20    35      15    33      16    32
Temp          22 23 20   18 26 29 26   23 31 31 20   15 27 31 23   18 27 30
Dewpt         18 16 17   16 22 22 24   22 26 22 18   15 24 23 20   16 23 22
PWind dir        SW      SW    SW      SW    SW      SW    SW      SW    SW
Wind char        LT      GN    GN      GN    GN      LT    LT      GN    LT
Avg clouds    OV B2 B2   B2 OV B2 B2   B2 OV B2 B1   B1 OV B2 B2   B1 B2 B1
PoP 12hr         40      60    70      70    80      40    40      40    30
Snow           C  C  L    L  L  L  L    L  D  D  C    S  C  C  C    C  C  S

$$
MTZ328-021100-
Dillon-Beaverhead MT
45.26N 112.55W Elev. 5357 ft
846 PM MST Mon Dec 1 2025

Date          Mon 12/01/25      Tue 12/02/25            Wed 12/03/25         Thu
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                      23          37          15          33          16
Temp                   26 27 27 26 34 37 32 27 23 21 18 16 27 33 27 21 19 19 21
Dewpt                  18 20 21 21 27 27 27 25 21 18 16 14 21 20 19 14 12 12 14
RH                     71 74 78 81 75 67 81 92 92 88 92 92 78 58 71 74 74 74 74
Wind dir               SW SW SW SW SW  W  N  N  N  S  S  S SW SW  S  S  S  S  S
Wind spd               14 13 12 11  6  5  5  6  8  5  5  5  2  4  5  6  9  9  9
Clouds                 OV B2 B1 B1 B1 B2 OV OV B2 B1 B1 SC FW FW FW SC B1 B1 B1
PoP 12hr                     20          50          40           0           0
QPF 12hr                      0        0.02        0.02           0           0
Snow 12hr                 00-00           T           T
Snow                                C  C  C  C  C  C


Date           12/04/25  Fri 12/05/25  Sat 12/06/25  Sun 12/07/25  Mon 12/08/25
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          36      23    40      27    41      20    39      20    40
Temp          31 32 27   26 36 36 33   31 37 35 28   21 32 34 27   23 34 35
Dewpt         21 23 20   20 28 29 28   25 29 25 21   15 23 24 19   16 24 24
PWind dir        SW       S    SW      SW    SW      SW     S       S    SW
Wind char        GN      GN    GN      GN    GN      GN    GN      GN    GN
Avg clouds    B1 SC B2   B2 B2 B1 B2   B2 B2 B1 B1   SC B1 B1 B1   SC B1 B1
PoP 12hr          5      20    40      40    40      10    10      10     5
Rain                            C  C    C
Snow                 S    S  S  C  C    C  C  C

$$
MTZ305-021100-
Havre-Hill MT
48.54N 109.76W Elev. 2585 ft
846 PM MST Mon Dec 1 2025

Date          Mon 12/01/25      Tue 12/02/25            Wed 12/03/25         Thu
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          35           5          25          11
Temp                   26 26 30 28 33 33 30 21 15 10  9  6 16 23 18 17 17 18 22
Dewpt                  22 22 26 26 30 30 27 20 13  9  7  5 14 19 15 14 14 15 18
RH                     85 85 85 92 89 89 88 96 92 96 91 96 92 84 88 88 88 88 84
Wind dir               SW SW SW SW  W  W NW  N  N  W SW  S  S  S  S SW SW SW SW
Wind spd               16 14 14 12 12 14 13 10  5  3  2  2  3  5  8 10 12 13 13
Clouds                 OV OV B2 OV B2 OV OV B2 B2 B2 B2 B2 B1 SC B1 B2 B2 B1 B1
PoP 12hr                     40          60          30           5           0
QPF 12hr                   0.02        0.03           0           0           0
Snow 12hr                     T           T       00-00
Snow                       C  L     C  C  S  S  C  C


Date           12/04/25  Fri 12/05/25  Sat 12/06/25  Sun 12/07/25  Mon 12/08/25
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          35      19    31       5    19       2    33      21    39
Temp          30 33 28   25 29 27 19   13 15 15  9    4 23 31 29   25 34 36
Dewpt         26 28 26   23 27 25 19   12 14 13  8    4 19 27 25   22 29 29
PWind dir        SW       W     W      NE    NE       E    SW      SW    SW
Wind char        GN      GN    GN      GN    GN      LT    GN      GN    BZ
Avg clouds    B1 B1 B2   B2 B2 B2 OV   OV OV B2 B2   B1 B1 B1 B1   SC SC B1
PoP 12hr         20      30    50      60    50      20    10      10     5
Snow              S  C    S  C  C  L    C  C  C  S

$$
MTZ314-021100-
Lewistown-Fergus MT
47.05N 109.46W Elev. 4144 ft
846 PM MST Mon Dec 1 2025

Date          Mon 12/01/25      Tue 12/02/25            Wed 12/03/25         Thu
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                      24          33          11          32          18
Temp                   29 29 30 30 31 31 31 26 23 18 13 16 26 32 24 21 22 23 25
Dewpt                  22 23 28 28 29 29 29 25 22 16 11 14 22 24 18 15 14 15 18
RH                     75 78 92 92 92 92 92 96 96 92 91 92 85 72 77 77 71 71 74
Wind dir                W  W  W  W  W NW NW NW NW NW  W SW SW SW  S SW SW  W  W
Wind spd               11 11 10 10 10 12 13 13 10  6  4  4  3  5  5  9 10 10 10
Wind gust                             23    24
Clouds                 B2 OV OV OV OV OV OV OV OV OV B2 B2 SC FW FW B1 B1 B1 B1
PoP 12hr                     60          80          70          10           0
QPF 12hr                   0.04        0.25        0.09        0.01           0
Snow 12hr                     T           3           1
Snow                       C  D  D  D  L  L  L  L  L
Winter Weath                  Y  Y  Y  Y  Y  Y  Y  Y


Date           12/04/25  Fri 12/05/25  Sat 12/06/25  Sun 12/07/25  Mon 12/08/25
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          37      23    37      18    33      18    40      24    42
Temp          33 34 31   29 34 33 28   24 29 28 25   19 35 36 32   29 37 37
Dewpt         25 26 25   24 29 28 24   20 25 24 20   15 26 25 23   21 27 26
PWind dir         W       W     W       W     W       W    SW      SW     W
Wind char        GN      GN    GN      GN    GN      GN    GN      GN    GN
Avg clouds    B1 B1 B2   B2 B2 B2 B2   B2 B2 B2 B2   B1 B1 B1 B1   SC SC SC
PoP 12hr         10      40    50      70    60      30    10      10     5
Snow                 C    S  C  C  L    C  L  C  C

$$
http://www.weather.gov/greatfalls