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Issued by NWS Great Falls, MT

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Point Forecast Matrices
National Weather Service Great Falls MT
228 PM MDT Wed Aug 27 2025

MTZ312-281000-
Great Falls-Cascade MT
47.47N 111.38W Elev. 3663 ft
228 PM MDT Wed Aug 27 2025

Date           08/27/25      Thu 08/28/25            Fri 08/29/25            Sat
MDT 3hrly     15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06
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                      59          70          55          73          54
Temp          85 82 72 65 63 61 62 67 68 67 61 60 57 55 59 67 70 72 62 58 56 54
Dewpt         36 37 41 42 45 45 47 50 51 50 54 55 55 55 56 54 52 51 51 52 52 51
RH            17 20 33 43 52 56 58 54 54 54 78 84 93100 90 63 53 48 67 80 86 90
Wind dir       E  E SE SE NE  S SW  S  S SE  E SW SW SW  W  W NE NE  E SW SW SW
Wind spd      16 16 11  8  5  4  4  6  8  8  5  5  5  4  4  5  6  9  5  5  4  4
Clouds        OV OV OV OV OV OV OV OV OV OV OV B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 B1
PoP 12hr                     20          50          50          40          20
QPF 12hr                      0        0.02        0.02        0.01           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs              S  S  C  C  C  C  C  C  S  S  C  C  C  C  S  S
Tstms                                     S                 S  S  S


Date           08/30/25  Sun 08/31/25  Mon 09/01/25  Tue 09/02/25  Wed 09/03/25
MDT 6hrly     12 18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     18 00 06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Max/Min          82      53    87      54    87      53    77      50    74
Temp          73 80 61   53 79 86 63   54 77 85 62   54 71 76 59   51 68 73
Dewpt         50 45 47   45 45 41 45   44 45 45 48   46 50 45 48   46 47 44
PWind dir        SW      SE    SW      SE     W       N     N      NE     N
Wind char        LT      LT    LT      LT    LT      LT    GN      GN    LT
Avg clouds    SC FW FW   FW FW FW SC   SC FW FW SC   SC SC SC SC   SC SC SC
PoP 12hr         10       0     0      10    10      20    20      20    10
Rain shwrs                                       S          S  S

$$
MTZ303-281000-
Cut Bank-Glacier MT
48.60N 112.39W Elev. 3838 ft
228 PM MDT Wed Aug 27 2025

Date           08/27/25      Thu 08/28/25            Fri 08/29/25            Sat
MDT 3hrly     15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06
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                      56          74          53          67          50
Temp          83 82 69 62 58 57 62 70 72 71 64 58 55 53 57 62 66 66 57 55 52 51
Dewpt         33 33 36 38 39 40 42 41 44 44 47 49 49 49 50 50 48 48 45 46 46 46
RH            16 17 30 41 49 53 48 35 37 38 54 72 80 86 77 65 52 52 64 72 80 83
Wind dir      SE  E  E SE  E NE  S  S SE SE SE  W  W  W NW  N  E  E  E  W  W  W
Wind spd      16 16 10  8  5  4  4  9 13 12  8  5  5  4  4  6  8  8  5  5  4  3
Wind gust     26
Clouds        SC B2 OV B2 OV OV OV OV OV OV OV OV OV OV B2 B1 B2 B2 B2 B1 B1 B1
PoP 12hr                      5          20          20          30          10
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                          S     S  S  S  S  S  S  C  C


Date           08/30/25  Sun 08/31/25  Mon 09/01/25  Tue 09/02/25  Wed 09/03/25
MDT 6hrly     12 18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     18 00 06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Max/Min          80      50    86      52    85      52    74      47    74
Temp          72 78 58   50 79 84 61   52 76 83 58   52 69 73 56   48 66 72
Dewpt         47 44 45   42 42 39 42   41 43 43 44   46 48 44 45   43 46 42
PWind dir         S      SW     W      NW     N       N     N       N    SE
Wind char        LT      LT    LT      LT    LT      GN    GN      GN    LT
Avg clouds    SC FW SC   FW FW FW SC   SC SC FW SC   SC SC SC SC   SC SC SC
PoP 12hr          5       5     5      10    10      20    20      20    10
Rain shwrs                                       S       S  S  S

$$
MTZ319-281000-
Helena-Lewis & Clark MT
46.61N 111.96W Elev. 3893 ft
228 PM MDT Wed Aug 27 2025

Date           08/27/25      Thu 08/28/25            Fri 08/29/25            Sat
MDT 3hrly     15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06
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                      57          70          55          77          54
Temp          78 74 69 65 62 58 57 62 66 68 64 63 59 56 59 68 73 76 67 63 58 54
Dewpt         43 44 49 52 52 52 53 55 56 54 54 55 54 53 54 51 50 50 49 49 48 48
RH            29 34 49 63 70 80 86 78 70 61 70 75 83 90 83 54 44 40 52 60 69 80
Wind dir      SE  S  S SW  S  S  E  S SE  W  W SW SW SW  W NW NW  N  N  W SW SW
Wind spd      11 11  8  5  3  2  3  3  5  6  5  4  3  3  2  5  8 10  5  3  2  2
Clouds        OV OV OV OV OV OV OV OV OV B2 B2 B2 B1 B1 B1 B1 B2 SC SC SC SC SC
PoP 12hr                     60          90          40          40          20
QPF 12hr                   0.02        0.14        0.03        0.01           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs     C  C  C  C  C  L  L  D  D  C  C  S  S  S  S  C  C  S  S
Tstms                                     S                 S  C  S


Date           08/30/25  Sun 08/31/25  Mon 09/01/25  Tue 09/02/25  Wed 09/03/25
MDT 6hrly     12 18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     18 00 06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Max/Min          82      53    86      55    87      55    78      52    78
Temp          71 80 65   54 74 85 66   56 75 85 67   56 69 78 64   53 67 76
Dewpt         49 42 43   41 45 40 43   42 46 42 46   45 49 45 47   44 47 41
PWind dir         W      SW    SE       W    SE       W     N      NW     N
Wind char        LT      LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    SC FW FW   FW FW FW SC   SC FW SC SC   SC SC SC SC   SC SC SC
PoP 12hr         10       0     5      10    20      20    20      20    20
Rain shwrs                                    S  S          S  S          S

$$
MTZ326-281000-
Bozeman-Gallatin MT
45.78N 111.16W Elev. 4475 ft
228 PM MDT Wed Aug 27 2025

Date           08/27/25      Thu 08/28/25            Fri 08/29/25            Sat
MDT 3hrly     15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06
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                      53          69          50          76          48
Temp          73 66 62 60 57 55 55 62 66 66 62 59 54 51 57 69 75 74 65 59 53 49
Dewpt         47 51 51 53 54 53 53 55 56 56 54 56 53 50 53 53 50 48 47 48 46 44
RH            40 58 67 78 90 93 93 78 70 70 75 90 96 96 86 57 41 40 52 67 77 83
Wind dir      SW  E  S SW  W  E  S NW NE  E  E  S  S  S SW  W NW  N NE SE SE SE
Wind spd       8 10  9  5  5  3  2  3  4  4  4  3  3  3  3  4  5  9  5  4  3  2
Clouds        OV OV OV OV OV OV OV OV OV B2 B2 B2 B1 B1 B1 B1 B1 SC SC SC SC SC
PoP 12hr                     70          90          70          30          20
QPF 12hr                   0.05        0.24        0.09           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs     L  L  L  L  L  D  D  D  D  L  L  S  S  C  C  C  C  S  S
Tstms             S  S  S  S        S  S  C  S              S  S  S


Date           08/30/25  Sun 08/31/25  Mon 09/01/25  Tue 09/02/25  Wed 09/03/25
MDT 6hrly     12 18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     18 00 06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Max/Min          80      48    85      49    87      49    81      47    78
Temp          69 78 59   49 74 84 61   50 77 82 62   50 73 78 59   48 68 76
Dewpt         46 42 43   40 43 40 42   40 44 42 46   43 47 44 46   43 45 41
PWind dir        SW      SE    SW      SE    SW       E     W       E     N
Wind char        LT      LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    FW FW FW   CL CL FW SC   FW FW FW SC   SC SC SC SC   SC SC SC
PoP 12hr         10       5     0       5    10      10    20      20    20
Rain shwrs                                                  S  S          S
Tstms                                                          S

$$
MTZ330-281000-
West Yellowstone-Gallatin MT
44.69N 111.11W Elev. 6644 ft
228 PM MDT Wed Aug 27 2025

Date           08/27/25      Thu 08/28/25            Fri 08/29/25            Sat
MDT 3hrly     15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06
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                      45          64          38          70          36
Temp          59 58 54 52 50 48 49 57 61 60 54 48 42 39 47 64 69 67 56 48 41 36
Dewpt         52 52 51 52 50 48 49 49 40 43 46 45 42 39 43 43 38 36 42 41 38 36
RH            78 80 90100100100100 75 46 53 74 89100100 86 46 32 32 59 77 89100
Wind dir       E  E  E SE  S  S SW SW SW  W SW SW  S  N SW  W  W  W NW NE  N  N
Wind spd       5  5  3  2  2  3  5  8 10  6  3  2  1  0  1  5  9  8  2  1  0  0
Clouds        OV OV OV OV OV OV OV OV OV B2 B2 B1 B1 B1 B1 B1 B1 SC SC SC SC FW
PoP 12hr                     90          90          60          30          20
QPF 12hr                   0.23        0.12        0.04        0.01           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs     D  D  D  D  D  D  D  D  D  L  L  S  S  S  S  C  C  S  S
Tstms          C  C  C  C  S     S  S  C  S                    S  S


Date           08/30/25  Sun 08/31/25  Mon 09/01/25  Tue 09/02/25  Wed 09/03/25
MDT 6hrly     12 18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     18 00 06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Max/Min          73      35    77      37    78      39    76      36    73
Temp          65 71 49   35 70 74 50   37 72 75 51   39 70 72 50   36 65 71
Dewpt         40 34 39   34 38 34 38   35 39 33 40   37 41 38 42   36 41 35
PWind dir        NW      SW    SW      SE    SW       N     W      NE     N
Wind char        LT      LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    FW SC FW   FW FW FW SC   FW FW SC SC   SC SC B1 B1   SC SC B1
PoP 12hr         20       5     5       5    20      20    30      20    30
Rain shwrs        S                           S  S          C  S          C
Tstms                                                          S

$$
MTZ328-281000-
Dillon-Beaverhead MT
45.26N 112.55W Elev. 5357 ft
228 PM MDT Wed Aug 27 2025

Date           08/27/25      Thu 08/28/25            Fri 08/29/25            Sat
MDT 3hrly     15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06
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                      51          69          47          75          45
Temp          61 60 57 56 54 52 55 63 67 68 60 54 50 47 55 68 74 74 63 55 48 45
Dewpt         60 59 57 56 54 52 55 57 57 57 54 50 49 47 50 51 50 50 47 45 42 41
RH            97 96100100100100100 81 70 68 81 86 96100 83 54 43 43 56 69 80 86
Wind dir       N NE NE  W SW  S SW  W  W NW  E SW  S  S SW  W  W NW  N SW SW  S
Wind spd       6  9  5  4  4  4  5  5  6  6  5  5  5  5  5  4  5  8  5  5  4  4
Clouds        OV OV OV OV OV B2 B2 B2 B2 B1 B1 B1 SC SC SC SC SC SC SC SC FW FW
PoP 12hr                     90          70          20          20           5
QPF 12hr                   0.13        0.05        0.02           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs     D  D  D  D  D  L  L  L  L  S  S              S  S
Tstms          C  C  C  S  S     S  S  S  S                    S


Date           08/30/25  Sun 08/31/25  Mon 09/01/25  Tue 09/02/25  Wed 09/03/25
MDT 6hrly     12 18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     18 00 06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Max/Min          77      46    81      48    81      47    77      46    75
Temp          68 75 56   46 72 78 58   48 73 77 58   48 70 75 56   47 67 74
Dewpt         46 43 41   39 47 43 43   39 47 47 46   42 50 48 47   43 49 44
PWind dir        SW       S    SW       S    SW      SW    NE      NE    NE
Wind char        LT      LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    FW FW FW   FW FW FW SC   SC FW SC SC   SC SC SC SC   SC SC SC
PoP 12hr         10       0     5       5    20      10    20      10    20
Rain shwrs                                    S             S             S

$$
MTZ305-281000-
Havre-Hill MT
48.54N 109.76W Elev. 2585 ft
228 PM MDT Wed Aug 27 2025

Date           08/27/25      Thu 08/28/25            Fri 08/29/25            Sat
MDT 3hrly     15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06
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                      57          82          57          73          54
Temp          87 85 71 67 62 58 63 78 81 76 67 63 60 58 60 67 70 68 61 59 56 55
Dewpt         41 41 45 45 44 45 44 45 45 48 53 54 55 55 54 52 52 51 50 51 51 52
RH            20 21 39 45 52 62 50 31 28 37 61 72 84 90 81 59 53 54 67 75 83 90
Wind dir       E  E  E  E  E  E  E  E  S SW  S SE SE  S  W  N  N NW  S SW SW SW
Wind spd      13 12  9  6  6  5  5  9 10 10  6  5  4  4  4  5  5  6  5  5  4  3
Clouds        SC B1 B2 B2 B2 OV B2 B2 OV OV OV OV OV OV OV B2 B2 B1 B2 B2 B2 B2
PoP 12hr                      0          20          30          30          20
QPF 12hr                      0           0        0.04        0.07           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                             S  S  S  S  S  C  C  C  C  S  S  S  S
Tstms                                                          S  S


Date           08/30/25  Sun 08/31/25  Mon 09/01/25  Tue 09/02/25  Wed 09/03/25
MDT 6hrly     12 18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     18 00 06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Max/Min          82      52    86      54    87      53    76      48    75
Temp          74 79 62   53 78 84 64   55 80 84 63   54 72 74 58   49 67 73
Dewpt         54 50 53   49 54 47 50   48 52 49 51   49 53 49 49   46 47 46
PWind dir        SW      SE    SW      SE     W       N     N      NE    NE
Wind char        LT      LT    LT      LT    LT      LT    GN      GN    LT
Avg clouds    B1 SC FW   FW FW FW FW   SC FW SC SC   SC SC B1 SC   SC SC FW
PoP 12hr          5       5     0       5    10      20    10      20    10
Rain shwrs                                       S    S        S
Tstms                                            S

$$
MTZ314-281000-
Lewistown-Fergus MT
47.05N 109.46W Elev. 4144 ft
228 PM MDT Wed Aug 27 2025

Date           08/27/25      Thu 08/28/25            Fri 08/29/25            Sat
MDT 3hrly     15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06
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                      56          70          53          66          51
Temp          79 77 66 62 60 58 62 68 68 65 60 58 55 54 57 64 64 65 57 55 53 52
Dewpt         39 41 40 40 41 44 47 53 53 52 56 56 54 53 54 55 55 55 52 53 51 50
RH            24 28 38 44 49 59 58 59 59 63 87 93 96 96 90 73 73 70 83 93 93 93
Wind dir       E  E  E SE SE SE SE SE  E SW  S SW SW  W  W NW  N  N  W SW SW SW
Wind spd      14 13 10  8  5  5  4  6  8  6  5  3  3  2  3  5  6  5  4  3  3  2
Clouds        B2 OV OV OV OV OV OV OV OV OV OV OV OV OV OV B2 B2 B2 B2 B2 B2 B1
PoP 12hr                     20          50          60          60          40
QPF 12hr                      0        0.05        0.15        0.23        0.03
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                 S  S  C  C  C  L  C  C  C  C  C  L  L  C  C  S  S
Tstms                                     C  S              S  C  C


Date           08/30/25  Sun 08/31/25  Mon 09/01/25  Tue 09/02/25  Wed 09/03/25
MDT 6hrly     12 18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     18 00 06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Max/Min          75      51    82      53    83      52    74      48    69
Temp          69 73 57   52 77 79 59   54 78 79 59   53 71 72 56   49 63 67
Dewpt         50 50 49   45 47 46 46   43 46 48 49   45 50 50 50   46 47 46
PWind dir         W      SE    SW      SE     W       S    NW       E    NE
Wind char        LT      LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    B1 SC FW   FW FW FW FW   FW FW FW SC   SC SC B1 B1   SC SC SC
PoP 12hr         20       5     5      10    20      20    30      30    20
Rain shwrs        S                           S  S          C  C    S     S

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