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Issued by NWS Great Falls, MT

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Point Forecast Matrices
National Weather Service Great Falls MT
410 PM MDT Sat Aug 30 2025

MTZ312-311000-
Great Falls-Cascade MT
47.47N 111.38W Elev. 3663 ft
410 PM MDT Sat Aug 30 2025

Date           08/30/25      Sun 08/31/25            Mon 09/01/25            Tue
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                      52          88          51          88          54
Temp             82 70 62 57 54 62 79 86 86 72 64 56 52 60 77 85 87 73 65 58 55
Dewpt            46 48 48 47 46 46 43 39 37 43 43 42 42 44 42 41 41 43 44 44 44
RH               28 45 60 69 74 56 28 19 18 35 46 59 69 55 29 21 20 34 46 59 66
Wind dir          W SW SW SW SW SW  W NW  N  E SE SW SW SW NE NE NE  E SE SW SW
Wind spd          6  5  6  6  6  6  5  5  6  6  5  4  4  2  2  6 10  8  6  5  5
Clouds           SC FW FW FW FW FW FW FW FW SC FW FW FW FW FW FW FW FW FW FW FW
PoP 12hr                      5           0           0           0           0
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00


Date           09/02/25  Wed 09/03/25  Thu 09/04/25  Fri 09/05/25  Sat 09/06/25
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          86      52    80      50    83      50    86      54    87
Temp          79 83 61   52 71 79 59   51 76 81 59   51 77 85 64   55 81 83
Dewpt         49 46 49   48 49 44 45   43 45 39 42   41 41 38 41   40 42 43
PWind dir        NW      NE    NE      SE    NW       E    SW      SE    SW
Wind char        LT      GN    LT      LT    LT      LT    LT      LT    GN
Avg clouds    FW FW SC   SC SC FW FW   SC SC FW FW   FW FW FW SC   SC SC SC
PoP 12hr          0       0     0       0     0       0     0       5     5

$$
MTZ303-311000-
Cut Bank-Glacier MT
48.60N 112.39W Elev. 3838 ft
410 PM MDT Sat Aug 30 2025

Date           08/30/25      Sun 08/31/25            Mon 09/01/25            Tue
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                      49          85          48          87          52
Temp             79 65 58 54 50 60 80 84 83 68 60 53 49 60 79 85 86 71 62 56 52
Dewpt            43 47 47 45 43 42 39 37 38 42 44 42 41 42 42 40 41 43 43 42 43
RH               28 52 67 71 77 51 23 19 20 39 55 66 74 51 27 20 21 36 50 59 71
Wind dir          W  W  W  W NW  W NW NW  N NE NW NW NW NW SE SE  E  N  W NW NW
Wind spd         12  8  9  9  9  5  6  8  9  6  4  4  4  3  5  8  6  6  6  6  6
Clouds           SC SC FW FW FW FW FW FW FW SC FW FW FW CL CL FW FW SC SC SC SC
PoP 12hr                     10           0           0           0           5
QPF 12hr                   0.02           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Obvis                      H


Date           09/02/25  Wed 09/03/25  Thu 09/04/25  Fri 09/05/25  Sat 09/06/25
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          79      48    79      47    82      47    84      51    84
Temp          74 77 57   48 70 78 57   48 74 81 57   48 77 82 59   52 80 81
Dewpt         50 49 47   45 47 42 42   41 43 39 40   39 40 38 38   37 39 39
PWind dir         N       E    SE       S    NW      SE     S       S     W
Wind char        GN      GN    LT      LT    LT      LT    GN      GN    GN
Avg clouds    FW FW SC   SC SC FW FW   SC SC FW FW   FW FW FW SC   SC SC SC
PoP 12hr          0       0     0       0     0       0     5       5     5

$$
MTZ319-311000-
Helena-Lewis & Clark MT
46.61N 111.96W Elev. 3893 ft
410 PM MDT Sat Aug 30 2025

Date           08/30/25      Sun 08/31/25            Mon 09/01/25            Tue
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                      52          86          53          88          57
Temp             82 72 65 59 53 57 72 82 85 74 66 59 54 59 74 84 87 75 70 62 57
Dewpt            46 44 43 45 44 46 44 41 38 42 41 42 42 46 43 40 39 40 41 40 41
RH               28 37 45 60 71 67 37 23 19 32 40 53 64 62 33 21 18 28 35 44 55
Wind dir         NW  W SW  W SW SW  E  E  E  S  W  W  S SE  E NE NE NE SW  S SW
Wind spd         10  5  5  5  4  2  3  6  5  5  3  2  2  1  3  5  6  4  2  2  2
Clouds           FW FW FW FW FW FW FW FW FW FW SC FW FW FW FW FW FW FW FW FW FW
PoP 12hr                      5           0           0           0           0
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Obvis                               H  H


Date           09/02/25  Wed 09/03/25  Thu 09/04/25  Fri 09/05/25  Sat 09/06/25
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          88      55    81      53    83      53    85      55    85
Temp          76 86 68   55 72 81 65   54 72 83 65   54 73 84 67   56 76 81
Dewpt         46 43 46   46 50 43 44   42 44 40 41   41 43 40 41   42 46 43
PWind dir         N      NW     N      NW    NW      NW    SE      SW    SW
Wind char        LT      LT    LT      LT    LT      LT    LT      GN    LT
Avg clouds    FW FW FW   FW FW FW FW   FW SC SC FW   FW FW FW SC   SC SC SC
PoP 12hr          0       0     5       0     0       0     5       5    10

$$
MTZ326-311000-
Bozeman-Gallatin MT
45.78N 111.16W Elev. 4475 ft
410 PM MDT Sat Aug 30 2025

Date           08/30/25      Sun 08/31/25            Mon 09/01/25            Tue
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                      47          84          48          86          50
Temp             77 67 57 53 49 56 73 82 82 69 61 54 49 56 73 83 85 70 63 55 51
Dewpt            40 43 45 45 42 43 41 36 35 35 38 37 37 40 38 38 38 39 41 40 39
RH               26 42 64 74 77 62 31 19 18 28 42 52 63 55 28 20 19 32 44 57 63
Wind dir         NW SE  S  S  S SE NW NW  N  E SE SE SE SE NW NW  N  E  E  E SE
Wind spd          6  5  4  4  4  2  3  4  4  5  5  5  4  1  2  5  6  6  8  5  4
Clouds           FW FW FW FW FW FW CL FW FW FW FW FW FW FW CL FW FW FW FW FW FW
PoP 12hr                      5           0           0           0           0
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Obvis                               H  H


Date           09/02/25  Wed 09/03/25  Thu 09/04/25  Fri 09/05/25  Sat 09/06/25
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          87      50    80      48    80      48    83      50    83
Temp          75 85 63   51 71 79 59   49 72 78 59   49 75 81 62   51 75 79
Dewpt         42 41 45   43 46 43 44   41 44 38 41   38 42 38 43   39 44 41
PWind dir        NE       E    NE       E     W       E    SW      SE    SW
Wind char        LT      GN    LT      LT    LT      LT    LT      LT    LT
Avg clouds    FW FW FW   FW FW FW FW   FW SC SC SC   FW FW FW SC   SC SC SC
PoP 12hr          0       0     5       0     0       0     5       5    10

$$
MTZ330-311000-
West Yellowstone-Gallatin MT
44.69N 111.11W Elev. 6644 ft
410 PM MDT Sat Aug 30 2025

Date           08/30/25      Sun 08/31/25            Mon 09/01/25            Tue
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                      34          76          35          79          39
Temp             71 57 48 39 34 45 66 74 75 61 49 39 35 46 72 78 77 63 52 43 39
Dewpt            31 32 32 29 27 29 33 29 31 33 31 27 27 31 37 30 31 38 37 36 36
RH               23 38 54 67 75 53 29 19 20 35 50 62 72 55 28 17 18 39 56 76 89
Wind dir         NW NW NE  E SE  S  W  W NW  N NE  E  N  N  E NW NW NE NE  E  N
Wind spd         10  3  1  1  1  1  2  4  4  2  2  1  0  0  2  5  5  2  2  1  0
Clouds           FW FW FW FW FW FW CL FW FW FW FW FW FW FW FW FW FW FW FW FW FW
PoP 12hr                      5           0           0           0           0
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00


Date           09/02/25  Wed 09/03/25  Thu 09/04/25  Fri 09/05/25  Sat 09/06/25
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          78      40    75      38    75      38    76      39    75
Temp          73 76 53   40 70 73 51   38 68 73 51   38 70 74 52   39 70 72
Dewpt         39 35 40   37 39 34 40   37 37 33 39   36 38 34 39   36 39 35
PWind dir         N      NE     N       N     N      NE     W       S    SW
Wind char        LT      LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    FW FW SC   FW FW FW FW   FW SC FW SC   FW SC FW SC   SC SC B1
PoP 12hr          5       5     5       0     0       5    10       5    30
Rain shwrs                                                                C

$$
MTZ328-311000-
Dillon-Beaverhead MT
45.26N 112.55W Elev. 5357 ft
410 PM MDT Sat Aug 30 2025

Date           08/30/25      Sun 08/31/25            Mon 09/01/25            Tue
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                      44          80          45          83          48
Temp             77 64 55 50 45 53 69 78 80 66 56 49 46 54 71 81 82 68 59 52 49
Dewpt            39 39 37 36 33 37 38 33 33 32 31 28 27 32 38 36 38 39 38 36 36
RH               25 40 51 58 62 54 32 19 18 28 38 44 47 43 30 20 21 34 45 54 61
Wind dir          N  E  S  S  S SW SW NE NE  E SE  S  S  S  N  N  N NE SE  S  S
Wind spd          6  5  5  5  6  3  2  3  4  5  5  5  4  2  2  4  5  5  5  4  4
Clouds           FW FW FW FW FW CL FW FW FW FW FW FW FW FW FW FW FW FW FW FW FW
PoP 12hr                      0           0           0           0           0
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Obvis                K  K  K  H  H  H  H


Date           09/02/25  Wed 09/03/25  Thu 09/04/25  Fri 09/05/25  Sat 09/06/25
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          84      48    81      47    80      46    81      49    81
Temp          75 81 58   48 71 80 58   48 72 78 57   47 73 79 59   49 73 75
Dewpt         44 42 42   40 47 45 44   40 47 42 42   39 46 45 44   40 46 47
PWind dir         W       E    NW       E    NW       E    SW       S    SW
Wind char        LT      LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    FW FW FW   FW FW FW SC   FW FW FW SC   FW FW SC SC   SC SC SC
PoP 12hr          0       0     0       0     0       5     5       5    20
Rain shwrs                                                                S

$$
MTZ305-311000-
Havre-Hill MT
48.54N 109.76W Elev. 2585 ft
410 PM MDT Sat Aug 30 2025

Date           08/30/25      Sun 08/31/25            Mon 09/01/25            Tue
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          86          53          87          55
Temp             74 63 58 54 52 59 74 82 83 69 63 57 53 62 80 86 85 71 65 59 55
Dewpt            53 56 54 51 49 49 52 48 48 52 51 50 49 51 53 49 49 54 52 50 50
RH               48 78 86 90 89 69 46 31 30 55 65 77 86 67 39 28 29 55 63 72 83
Wind dir         SE  E SE SE SW SW  W  W NW NE  S SW  W  W  N  N NE  E SE  E SE
Wind spd          3  6  5  5  5  6  8  8  8  4  3  3  2  2  3  4  5  5  5  4  4
Clouds           SC FW SC FW FW FW CL CL FW FW FW FW FW CL CL FW FW SC SC SC SC
PoP 12hr                     20           0           0           0           5
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs        S
Tstms             S
Heat index                                                 80
Max heat                                 83    80          80    84    80


Date           09/02/25  Wed 09/03/25  Thu 09/04/25  Fri 09/05/25  Sat 09/06/25
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          81      48    75      47    80      48    81      50    84
Temp          76 77 58   49 67 74 56   48 72 78 57   49 73 79 60   51 76 81
Dewpt         54 55 52   47 48 46 47   43 49 46 48   44 48 46 46   43 48 46
PWind dir        NE       E     E      SE     W       E    SE      SE    SW
Wind char        LT      GN    LT      LT    LT      LT    LT      LT    LT
Avg clouds    SC B1 B1   B1 SC SC SC   SC SC FW FW   FW FW FW FW   SC SC SC
PoP 12hr          5       0     0       0     0       0     0       0     5

$$
MTZ314-311000-
Lewistown-Fergus MT
47.05N 109.46W Elev. 4144 ft
410 PM MDT Sat Aug 30 2025

Date           08/30/25      Sun 08/31/25            Mon 09/01/25            Tue
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                      50          83          51          83          53
Temp             72 61 55 54 52 61 75 82 80 66 59 55 52 62 77 82 81 66 60 56 54
Dewpt            49 52 49 48 45 46 44 44 44 47 44 42 42 47 45 46 46 48 47 44 43
RH               44 72 80 80 77 58 33 26 28 50 57 61 69 58 32 28 29 52 62 64 66
Wind dir          N SE  S  S  S SW NW NW  N SE  S  S  S SW  N  N  N  E  S  S  S
Wind spd          5  5  5  5  5  4  5  6  5  4  4  4  3  2  3  5  5  5  5  5  4
Clouds           SC SC FW FW FW CL CL FW FW FW FW FW FW FW CL CL CL FW FW SC FW
PoP 12hr                     20           0           0           0           0
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs        S
Tstms             S


Date           09/02/25  Wed 09/03/25  Thu 09/04/25  Fri 09/05/25  Sat 09/06/25
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          81      48    72      47    76      48    79      51    82
Temp          78 77 56   49 67 70 53   48 70 73 54   49 74 77 57   52 78 79
Dewpt         47 51 52   48 49 47 46   42 45 44 44   40 43 47 41   38 42 46
PWind dir         W       E     E      SE     W      SE     W      SE    SW
Wind char        LT      LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    FW FW SC   B1 SC FW SC   SC SC FW FW   FW FW FW FW   SC SC SC
PoP 12hr          5       5     5       0     0       0     5       5    10

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