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Issued by NWS Great Falls, MT

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Point Forecast Matrices
National Weather Service Great Falls MT
253 AM MDT Tue Jun 17 2025

MTZ312-172200-
Great Falls-Cascade MT
47.47N 111.38W Elev. 3663 ft
253 AM MDT Tue Jun 17 2025

Date             Tue 06/17/25            Wed 06/18/25            Thu 06/19/25
MDT 3hrly     03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
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                      82          50          85          52          85
Temp          57 56 68 77 81 80 69 60 54 51 64 76 82 84 73 63 56 53 64 76 82 84
Dewpt         42 43 47 45 40 36 39 38 34 34 35 34 33 33 36 35 35 35 36 36 36 40
RH            57 62 47 32 23 20 33 44 46 52 34 22 17 16 26 35 45 50 35 23 19 21
Wind dir      SW SW SW  W SW  W  W SW SW SW  W  W  W  W  W SW SW SW  W  W NW  N
Wind spd       5  5  6  5  6  8  5  6  6  8 10 11 13 13  9  5  5  5  6  6 10 12
Clouds        SC SC FW FW FW SC SC FW CL FW CL CL CL FW FW SC FW SC FW SC SC B1
PoP 12hr                     10           5           0           5           5
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                                                                    C
Tstms                                                                         S


Date               Fri 06/20/25  Sat 06/21/25  Sun 06/22/25  Mon 06/23/25
MDT 6hrly     00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Min/Max            54    76      49    67      41    56      39    67
Temp          63   55 70 68 55   50 59 61 47   42 47 55 44   40 59 66
Dewpt         43   44 48 50 48   44 45 44 40   36 37 38 38   35 38 38
PWind dir          NE     N      NW     W      NW    NW       W    SW
Wind char          GN    GN      GN    GN      BZ    GN      LT    LT
Avg clouds    B1   B1 B1 B2 B2   B2 B2 B2 B2   B2 B2 B2 B1   SC SC B1
PoP 12hr           30    80      80    70      70    70      20    30
Rain shwrs     C    C  C  D  D    C  C  L  L    L  L  L  S          C
Tstms          S       C  C  C          S  S                        S

$$
MTZ303-172200-
Cut Bank-Glacier MT
48.60N 112.39W Elev. 3838 ft
253 AM MDT Tue Jun 17 2025

Date             Tue 06/17/25            Wed 06/18/25            Thu 06/19/25
MDT 3hrly     03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
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                      79          47          80          48          82
Temp          58 56 71 79 79 77 69 58 52 48 61 74 78 80 70 59 53 49 62 74 78 82
Dewpt         45 43 43 34 30 30 34 34 34 32 32 32 33 35 35 35 31 31 32 30 30 33
RH            62 62 36 20 17 18 27 40 50 54 33 21 19 20 27 40 43 50 32 20 17 17
Wind dir       S NW  W  W  W  W  W  W  W  W  W  W  W  W  W  W  W  W  W  W  W  W
Wind spd       5  5 10 13 14 17 13 12 10 10 13 14 18 18 13 11 11 10 12 13 12 11
Wind gust                 25                      28 29
Clouds        FW SC FW FW FW FW SC FW FW FW CL FW FW FW FW FW SC SC SC SC B1 B1
PoP 12hr                      0           0           0           0           0
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00


Date               Fri 06/20/25  Sat 06/21/25  Sun 06/22/25  Mon 06/23/25
MDT 6hrly     00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Min/Max            48    68      46    58      37    53      35    64
Temp          60   49 64 64 52   46 51 56 43   38 46 52 42   36 57 63
Dewpt         35   38 44 47 47   44 40 42 39   36 37 37 38   35 37 38
PWind dir          NW     N      NW     W      NW    NW      SW    SW
Wind char          GN    GN      GN    BZ      WY    BZ      GN    LT
Avg clouds    B1   SC B2 B2 OV   OV B2 OV OV   OV OV B2 B1   SC SC B1
PoP 12hr           10    80      90    90      80    70      30    40
Rain shwrs             C  D  D    D  L  D  D    D  L  L  C    S     C
Tstms                  C  C  C             S                        S

$$
MTZ319-172200-
Helena-Lewis & Clark MT
46.61N 111.96W Elev. 3893 ft
253 AM MDT Tue Jun 17 2025

Date             Tue 06/17/25            Wed 06/18/25            Thu 06/19/25
MDT 3hrly     03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
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                      82          52          87          54          87
Temp          55 54 62 74 81 82 73 62 56 52 61 76 84 86 77 65 58 54 64 78 86 83
Dewpt         41 41 43 42 35 33 36 36 34 35 38 38 36 37 39 38 37 38 41 42 43 44
RH            59 61 50 32 19 17 26 38 43 52 42 25 18 18 25 37 45 54 43 28 22 25
Wind dir      SW  W NE  W  W  W NW  W  W SW  W  W  W  W  W  W  W  W  W  N  N  N
Wind spd       2  2  2  5  9 10  6  5  4  3  3  8 11 10  6  5  4  2  2  5  8  9
Clouds        B1 SC FW FW FW FW SC FW FW FW FW FW FW FW FW FW FW SC FW FW SC B1
PoP 12hr                     10           0           5           5          10
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                                                                    C
Tstms                                                                         S


Date               Fri 06/20/25  Sat 06/21/25  Sun 06/22/25  Mon 06/23/25
MDT 6hrly     00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Min/Max            55    78      50    67      43    58      41    70
Temp          66   55 73 72 58   50 61 64 50   43 51 57 48   41 61 68
Dewpt         48   45 48 50 48   44 41 39 42   38 35 35 37   36 36 36
PWind dir           N    NW      NW     W      NW    NW       W    SW
Wind char          LT    LT      GN    GN      GN    GN      LT    LT
Avg clouds    B1   B1 SC B2 B2   B2 B1 B2 B2   B2 B2 B2 B1   SC SC B1
PoP 12hr           30    70      60    70      70    70      30    30
Rain shwrs     C    S  S  L  L    C  C  L  L    L  L  L  C          C
Tstms          S       S  C  C          S  S          C             S

$$
MTZ326-172200-
Bozeman-Gallatin MT
45.78N 111.16W Elev. 4475 ft
253 AM MDT Tue Jun 17 2025

Date             Tue 06/17/25            Wed 06/18/25            Thu 06/19/25
MDT 3hrly     03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
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                      78          47          86          49          87
Temp          57 55 65 73 76 76 67 58 51 47 60 75 82 85 73 62 53 49 63 80 86 82
Dewpt         49 48 49 49 43 40 42 41 39 38 40 41 40 41 44 43 40 40 42 45 44 47
RH            75 77 56 43 31 27 40 53 63 71 47 29 22 21 35 50 61 71 46 29 23 29
Wind dir       S  S SW NW NW NW  E  S  S  S SW  W  W  W SE SE SE SE NW NW NW  W
Wind spd       2  2  2  3  4  5  3  4  2  3  2  5  9 10  5  4  3  2  1  2  4  8
Clouds        B2 B1 SC FW SC FW FW SC FW FW FW FW FW SC FW FW CL FW FW SC SC B2
PoP 12hr                     20           5           5           5          10
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                 S                                                  C
Tstms                      S                                                  S


Date               Fri 06/20/25  Sat 06/21/25  Sun 06/22/25  Mon 06/23/25
MDT 6hrly     00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Min/Max            51    84      46    72      40    62      37    70
Temp          62   51 77 79 57   46 66 69 52   40 54 58 46   37 60 69
Dewpt         50   47 49 46 48   44 40 39 42   38 38 35 38   35 35 38
PWind dir           E     S      NW     W      NW    NW       E    SW
Wind char          LT    LT      GN    LT      GN    LT      LT    LT
Avg clouds    B2   B1 SC B1 B1   B1 B1 B1 B2   B2 B1 B2 B1   SC SC B1
PoP 12hr           40    40      40    40      60    60      30    30
Rain shwrs     C    S     C  C    C  S  C  L    C  C  L  C          C
Tstms          S          C  S          S  S          C             S

$$
MTZ330-172200-
West Yellowstone-Gallatin MT
44.69N 111.11W Elev. 6644 ft
253 AM MDT Tue Jun 17 2025

Date             Tue 06/17/25            Wed 06/18/25            Thu 06/19/25
MDT 3hrly     03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
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                      70          36          76          37          82
Temp          50 49 62 69 70 70 60 49 39 36 52 68 73 75 64 52 41 38 54 76 82 79
Dewpt         41 40 43 42 36 34 37 38 36 35 36 35 32 34 37 38 34 34 36 36 34 35
RH            71 71 50 37 29 26 42 66 89 96 54 29 22 22 37 59 76 85 50 23 18 20
Wind dir      SE SE  N NW NW  W SW NE  N  N SW SW SW SW  S  S  S SE  S SW SW SW
Wind spd       1  1  1  5  6  6  2  1  0  0  2  9 11 11  6  3  1  1  2  9 12 11
Wind gust                                         23 23                19 25 23
Clouds        B1 B1 SC SC SC SC SC B1 FW FW FW CL FW SC FW FW FW FW FW FW SC SC
PoP 12hr                     30           5           0           0          10
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs              S  S                                                  S
Tstms                   S  S                                                  S


Date               Fri 06/20/25  Sat 06/21/25  Sun 06/22/25  Mon 06/23/25
MDT 6hrly     00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Min/Max            41    76      39    66      32    57      27    64
Temp          55   41 71 74 53   39 63 63 44   32 50 56 38   27 57 63
Dewpt         44   40 38 32 37   33 27 25 32   30 27 26 29   26 24 23
PWind dir           S     S       S    SW      SW    SW       S     S
Wind char          LT    GN      GN    GN      GN    GN      LT    LT
Avg clouds    B1   B1 B1 SC SC   SC SC SC B1   B1 B1 B1 SC   FW SC B1
PoP 12hr           20    20      10    20      40    50      20    30
Rain shwrs     S          S             S  C    C  C  C  S          C
Snowshwrs                                          C
Tstms          S          S                           S             S

$$
MTZ328-172200-
Dillon-Beaverhead MT
45.26N 112.55W Elev. 5357 ft
253 AM MDT Tue Jun 17 2025

Date             Tue 06/17/25            Wed 06/18/25            Thu 06/19/25
MDT 3hrly     03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
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                      75          45          82          47          84
Temp          49 47 58 68 73 75 65 56 49 45 58 73 79 82 71 59 50 47 60 76 83 79
Dewpt         47 45 49 44 40 39 40 38 37 35 39 40 37 39 42 39 36 35 39 43 43 45
RH            93 93 72 42 30 27 40 51 63 68 49 30 22 22 35 47 58 63 46 31 24 30
Wind dir       S  S SW NW  N  W  N NW  S  S SW SW SW  W SW SW  S  S SW  W SW  W
Wind spd       4  4  4  4  6  8  4  5  5  5  5  8 13 13 10  8  5  5  3  4  9 10
Clouds        B1 SC FW CL FW FW SC SC FW FW CL CL FW FW FW FW FW FW FW FW SC B1
PoP 12hr                     10           0           0           0          20
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                                                              S  S  S


Date               Fri 06/20/25  Sat 06/21/25  Sun 06/22/25  Mon 06/23/25
MDT 6hrly     00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Min/Max            48    79      43    68      37    58      34    66
Temp          58   48 73 75 52   43 62 62 46   37 51 54 43   34 57 66
Dewpt         47   44 46 41 38   39 35 34 36   34 36 38 37   32 35 36
PWind dir          NE    SW      NW    SW      NW    NW      NE     S
Wind char          LT    GN      BZ    GN      GN    GN      LT    LT
Avg clouds    B1   B1 SC B1 B1   B1 B1 B1 B2   B2 B1 B1 SC   SC FW SC
PoP 12hr           20    30      30    50      50    50      20    20
Rain shwrs     S          C  C    C  S  C  C    C  C  C  S          S
Tstms                     S  S          C  S          S             S

$$
MTZ305-172200-
Havre-Hill MT
48.54N 109.76W Elev. 2585 ft
253 AM MDT Tue Jun 17 2025

Date             Tue 06/17/25            Wed 06/18/25            Thu 06/19/25
MDT 3hrly     03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
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                      85          51          86          53          86
Temp          53 52 67 79 84 80 71 61 55 52 63 77 84 85 73 62 56 53 66 79 85 83
Dewpt         48 48 53 50 45 42 47 45 42 40 41 42 40 38 43 43 39 38 39 38 37 37
RH            83 86 61 36 26 26 42 56 61 63 44 29 21 19 34 50 53 57 37 23 18 19
Wind dir      SW  S SW SW SW SW  S  S SW SW  W  W  W  W SW  S SW SW  W  W  W NW
Wind spd       3  2  3  6  9 10  9  9  9 10 11 12 13 12  9  8  9 10 12 12 12 10
Clouds        FW FW FW FW SC SC FW SC FW FW CL FW CL FW FW FW FW SC FW FW SC SC
PoP 12hr                     20          20           0          10           5
QPF 12hr                   0.01           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                    S
Tstms                         S


Date               Fri 06/20/25  Sat 06/21/25  Sun 06/22/25  Mon 06/23/25
MDT 6hrly     00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Min/Max            55    78      51    68      43    58      40    67
Temp          63   56 72 73 58   52 61 63 49   44 50 56 46   41 59 66
Dewpt         43   46 52 51 53   48 52 48 44   41 42 41 41   38 42 42
PWind dir          NE     E      SE     W       W     W       W    SW
Wind char          LT    GN      GN    GN      BZ    BZ      GN    LT
Avg clouds    B1   B1 B2 B2 OV   B2 B2 B2 B2   B2 B2 B2 B1   SC SC SC
PoP 12hr           20    70      90    70      70    70      30    20
Rain shwrs          S  L  L  D    L  L  L  L    L  L  L  C    S     S
Tstms                  C  C  C          S  S                        S

$$
MTZ314-172200-
Lewistown-Fergus MT
47.05N 109.46W Elev. 4144 ft
253 AM MDT Tue Jun 17 2025

Date             Tue 06/17/25            Wed 06/18/25            Thu 06/19/25
MDT 3hrly     03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
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                      74          49          78          50          80
Temp          49 49 64 70 73 72 62 55 52 50 62 72 76 77 67 57 54 51 63 74 79 76
Dewpt         48 46 51 46 43 45 48 44 40 36 41 41 42 43 45 42 40 38 41 44 46 47
RH            96 89 63 42 34 38 60 66 63 58 46 33 30 30 45 57 59 61 44 34 31 36
Wind dir       S  S  E NE  W  W  S  S SW SW  W  W NW NW SE  S  S SW NW NW  N NE
Wind spd       4  4  2  3  4  5  5  8  6  5  5  9  8  5  5  5  4  4  5  5  6  8
Wind gust                                         18
Clouds        B1 B2 SC FW SC SC FW FW FW FW CL CL FW FW FW FW FW FW FW FW SC B2
PoP 12hr                     20          10           5          10          10
QPF 12hr                   0.01           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                 S                                                  L
Tstms                      S                                                  S


Date               Fri 06/20/25  Sat 06/21/25  Sun 06/22/25  Mon 06/23/25
MDT 6hrly     00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Min/Max            51    76      48    68      40    53      35    63
Temp          59   52 71 72 54   49 62 62 46   41 48 50 40   36 57 62
Dewpt         48   44 51 53 51   47 48 47 42   38 39 38 37   34 38 42
PWind dir           E     E      NW    NW      NW    NW       W    SW
Wind char          LT    GN      GN    GN      GN    BZ      GN    LT
Avg clouds    B2   B2 B1 B2 B2   B1 B1 B1 B2   B2 B2 B2 B1   SC SC B1
PoP 12hr           60    60      70    50      70    60      30    30
Rain shwrs     L    C  C  L  L    C  C  C  L    L  C  L  C    S     C
Tstms          S    S  C  C  C          S  S                        S

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