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Issued by NWS Great Falls, MT

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Point Forecast Matrices
National Weather Service Great Falls MT
217 PM MDT Mon Jul 14 2025

MTZ312-151000-
Great Falls-Cascade MT
47.47N 111.38W Elev. 3663 ft
217 PM MDT Mon Jul 14 2025

Date           07/14/25      Tue 07/15/25            Wed 07/16/25            Thu
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          56          49          69          48
Temp          87 82 67 58 54 54 52 52 54 54 52 51 51 49 51 58 66 69 62 55 51 49
Dewpt         51 53 51 51 51 51 52 51 52 49 48 48 47 46 48 49 49 48 49 48 45 44
RH            29 37 56 77 90 90100 96 93 83 86 89 86 89 89 72 54 47 62 77 80 83
Wind dir      NW  N  N  N  N NE NE NE NE NE NE NE NE NE NE  E  E  E  E  E  S  S
Wind spd      14 17 20 21 19 19 20 19 19 17 16 13 11  9  8  5  8  9  9  5  5  5
Wind gust           31                29
Clouds        FW B1 B2 OV OV OV OV OV OV OV OV OV B2 B2 B1 B1 SC FW FW FW FW FW
PoP 12hr                     70         100          60          20           0
QPF 12hr                   0.17        0.65        0.13        0.02           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs        C  C  C  L  D  D  D  D  L  L  C  C  S  S
Tstms             C  C           C  S  S


Date           07/17/25  Fri 07/18/25  Sat 07/19/25  Sun 07/20/25  Mon 07/21/25
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      52    79      54    89      56    88      56    82
Temp          71 80 60   53 68 78 62   55 79 86 65   57 79 87 64   57 75 81
Dewpt         50 52 52   48 51 50 50   48 51 45 48   46 44 42 45   43 42 41
PWind dir        SE       N    NW       E    SW       W     W      NW     W
Wind char        LT      GN    LT      GN    LT      LT    LT      GN    GN
Avg clouds    FW FW FW   SC SC SC FW   FW FW FW SC   FW SC SC SC   SC FW SC
PoP 12hr         10      10     5       5    10       5    10      10    10

$$
MTZ303-151000-
Cut Bank-Glacier MT
48.60N 112.39W Elev. 3838 ft
217 PM MDT Mon Jul 14 2025

Date           07/14/25      Tue 07/15/25            Wed 07/16/25            Thu
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                      48          54          43          66          46
Temp          63 57 48 48 48 48 49 50 52 52 51 47 45 43 49 57 63 65 59 52 48 46
Dewpt         55 51 47 48 47 47 48 49 51 48 48 45 45 43 46 48 50 51 51 49 47 46
RH            75 80 96100 96 96 96 96 96 86 89 93100100 89 72 62 60 75 89 96100
Wind dir      NE  N  N  N  N  N NE NE NE NE NE  W NW  W SE SE SE SE SE SE SE  E
Wind spd      18 24 24 20 18 18 18 17 14 11  8  5  4  4  8 13 14 14 12 10  6  4
Wind gust        35 35    28       27 25
Clouds        B1 B2 OV OV OV OV OV OV OV OV OV B1 B1 SC SC B1 SC FW SC SC B1 SC
PoP 12hr                     80          90          30          10           5
QPF 12hr                   0.44        0.65        0.05           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs     S  C  L  D  D  D  D  D  L  C  C
Tstms          S  C
Obvis                                          PF PF  F


Date           07/17/25  Fri 07/18/25  Sat 07/19/25  Sun 07/20/25  Mon 07/21/25
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      47    74      50    81      51    80      51    75
Temp          66 69 54   48 65 73 57   51 74 78 60   52 75 78 59   52 69 73
Dewpt         54 56 52   47 50 52 51   48 50 48 47   43 46 46 47   44 45 46
PWind dir         E       N     N      SE     S       W     W       W     W
Wind char        LT      GN    LT      LT    GN      GN    GN      GN    GN
Avg clouds    SC B1 SC   B1 SC SC SC   SC SC SC B1   B1 SC SC SC   B1 SC SC
PoP 12hr         30      20     5       5    10       5    10      10    20
Rain shwrs        C  S                                                    S
Tstms             C  S                                                    S

$$
MTZ319-151000-
Helena-Lewis & Clark MT
46.61N 111.96W Elev. 3893 ft
217 PM MDT Mon Jul 14 2025

Date           07/14/25      Tue 07/15/25            Wed 07/16/25            Thu
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                      55          62          49          76          49
Temp          95 93 80 67 61 57 55 57 60 58 56 54 51 50 52 62 72 76 71 61 55 50
Dewpt         43 42 48 53 51 50 50 49 51 47 45 47 46 45 46 47 47 48 48 48 45 43
RH            17 17 33 61 70 77 83 75 72 67 66 77 83 83 80 58 41 37 44 62 69 77
Wind dir       W NW NW NW NW NW  N  N  N  N  N NW NW NW  N  E  E  E  E SE  S  S
Wind spd      13 16 18 17 13 11 12 13 18 17 14 11  8  5  4  5  8 10  5  5  4  3
Wind gust     25    29 29 24 21    24 28 27 25
Clouds        FW B1 B1 B1 B2 OV OV OV OV B2 B2 B2 B2 B2 B2 B1 SC FW CL CL FW FW
PoP 12hr                     30          90          70          20           0
QPF 12hr                   0.01        0.23        0.12        0.01           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs        S  C     S  D  D  D  D  L  L  C  C  S  S
Tstms             S  S           S  S  S  S


Date           07/17/25  Fri 07/18/25  Sat 07/19/25  Sun 07/20/25  Mon 07/21/25
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          89      54    85      54    91      56    88      55    84
Temp          75 88 65   55 73 84 65   55 79 87 68   57 79 87 66   56 75 83
Dewpt         48 43 48   46 48 42 46   44 47 40 45   42 43 40 42   40 40 38
PWind dir         E      NW     N      NW    SE       W     W       W     W
Wind char        LT      LT    LT      LT    LT      LT    LT      GN    LT
Avg clouds    FW FW FW   FW SC FW FW   FW FW FW SC   FW FW SC SC   SC FW SC
PoP 12hr         10       5    10       5    10       5    10       5    10

$$
MTZ326-151000-
Bozeman-Gallatin MT
45.78N 111.16W Elev. 4475 ft
217 PM MDT Mon Jul 14 2025

Date           07/14/25      Tue 07/15/25            Wed 07/16/25            Thu
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                      54          72          48          75          45
Temp          90 89 76 67 58 55 61 67 70 64 59 55 51 49 54 62 72 74 66 56 50 46
Dewpt         45 44 46 50 51 51 51 53 55 52 50 50 48 47 48 48 48 47 48 48 47 44
RH            21 21 34 54 77 86 70 61 59 65 72 83 89 93 80 60 42 38 52 74 89 93
Wind dir       W  W  N NW  W  S  S  N  N NE  N  N NW  W NE  E  E  E  E  E  E SE
Wind spd       9 11 10  8  5  5  5  8 11 12 11 10  8  5  5  3  5  8  9  8  5  4
Clouds        FW B1 B1 B1 SC B1 B1 B2 B2 OV OV OV OV OV B2 B1 SC FW FW FW FW FW
PoP 12hr                     30          90          80          30           0
QPF 12hr                   0.07        0.21        0.21        0.02           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs        C  S  S     C  C  S  L  D  D  L  L  C  C  S  S
Tstms             C  S                 S  C  S
Obvis                                                PF


Date           07/17/25  Fri 07/18/25  Sat 07/19/25  Sun 07/20/25  Mon 07/21/25
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          89      49    87      51    91      52    91      51    88
Temp          75 87 62   50 78 84 63   51 80 87 65   53 83 86 65   52 79 82
Dewpt         46 44 47   45 49 43 49   46 46 40 46   43 43 39 43   42 42 37
PWind dir        SW      NE     W       E    SW      SE     W       W     W
Wind char        LT      LT    LT      LT    LT      LT    LT      GN    LT
Avg clouds    FW FW FW   FW FW FW SC   FW FW FW SC   FW SC SC B1   SC FW SC
PoP 12hr         10      10    10      10    10       5    10       5    10

$$
MTZ330-151000-
West Yellowstone-Gallatin MT
44.69N 111.11W Elev. 6644 ft
217 PM MDT Mon Jul 14 2025

Date           07/14/25      Tue 07/15/25            Wed 07/16/25            Thu
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          78          41          73          38
Temp          87 81 70 58 49 44 57 74 75 67 57 49 44 42 49 63 71 72 62 50 41 39
Dewpt         40 41 46 46 45 44 46 45 47 50 50 49 44 42 44 44 40 38 42 42 40 38
RH            19 24 42 64 86100 67 35 37 54 77100100100 83 50 32 29 48 74 96 96
Wind dir      SW  W SW NE NE NE  N SW  W NE NE NE NE  N  N NW  W  W  N  E SE SE
Wind spd      10  9  3  2  1  1  1 10 12  9  6  5  4  2  2  4  8  8  3  2  2  1
Clouds        B1 B1 B1 SC SC FW FW B2 B2 B2 B2 B1 B1 B1 B1 SC SC FW FW CL FW FW
PoP 12hr                     30          70          70          20           0
QPF 12hr                      0        0.13        0.10        0.01           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs     S  C                 S  L  L  L  C  C  S  S  S  S
Tstms          S  S                 S  C  C  S              S  S
Obvis                         F                PF PF  F


Date           07/17/25  Fri 07/18/25  Sat 07/19/25  Sun 07/20/25  Mon 07/21/25
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          83      41    82      42    82      42    81      42    79
Temp          75 80 56   41 76 78 53   42 75 80 56   42 76 79 56   42 72 77
Dewpt         39 37 41   38 40 38 42   39 38 34 40   36 38 32 37   35 37 33
PWind dir         S       S    SW      SE    SW       S    SW      SW    SW
Wind char        LT      LT    LT      LT    LT      LT    GN      LT    GN
Avg clouds    FW FW SC   FW FW SC SC   FW FW FW SC   FW FW FW SC   SC SC SC
PoP 12hr          5      10    20       5    10       5    10       5     5
Rain shwrs                      S

$$
MTZ328-151000-
Dillon-Beaverhead MT
45.26N 112.55W Elev. 5357 ft
217 PM MDT Mon Jul 14 2025

Date           07/14/25      Tue 07/15/25            Wed 07/16/25            Thu
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          74          47          75          45
Temp          90 89 77 63 55 52 58 70 72 66 56 51 49 47 52 62 71 75 66 55 48 45
Dewpt         40 41 50 51 50 50 53 55 57 57 53 49 47 46 48 49 47 46 47 46 43 42
RH            17 19 39 65 83 93 83 59 59 73 90 93 93 96 86 62 42 36 50 72 83 89
Wind dir       W  W  N  N NE NE  N NE  N  N  N  N  N  N  N  N  N  N NE NE SE  S
Wind spd      12 12 10  8  8  8  9 10 14 18 18 16 13 10  8  4  6  6  6  5  5  4
Clouds        FW FW SC SC FW FW FW B2 B2 B1 B2 B2 B2 B2 B1 SC FW FW CL CL FW CL
PoP 12hr                     20          80          50          10           0
QPF 12hr                   0.04        0.09        0.04           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs           S                 D  C  C  S  S
Tstms                S                    C
Obvis                        PF


Date           07/17/25  Fri 07/18/25  Sat 07/19/25  Sun 07/20/25  Mon 07/21/25
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          89      48    87      49    89      51    87      50    83
Temp          78 88 61   48 78 82 60   49 80 87 61   51 79 86 60   50 75 82
Dewpt         46 43 43   40 46 45 44   41 42 40 40   38 40 40 39   38 40 38
PWind dir        SW       N     W      SE    SW      SW    SW       W    SW
Wind char        LT      GN    LT      LT    GN      GN    GN      GN    GN
Avg clouds    CL FW FW   FW FW FW SC   FW CL FW SC   FW FW SC B1   SC FW SC
PoP 12hr         10       5    10       5     5       5     5       0     5

$$
MTZ305-151000-
Havre-Hill MT
48.54N 109.76W Elev. 2585 ft
217 PM MDT Mon Jul 14 2025

Date           07/14/25      Tue 07/15/25            Wed 07/16/25            Thu
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          62          46          70          47
Temp          82 76 64 56 56 54 54 58 61 60 57 52 49 47 54 63 68 69 62 55 50 48
Dewpt         61 58 53 53 53 52 52 53 53 53 50 49 48 46 48 49 50 52 49 50 47 46
RH            49 54 67 90 90 93 93 83 75 78 77 89 96 96 80 60 52 55 62 83 89 93
Wind dir       N NE NE NE NE NE NE NE NE NE  E  E  E  E  E  E SE SE SE SE SE  E
Wind spd      13 20 21 18 16 14 16 16 13 11  9  6  5  5  6 10 10 11 10 10  9  8
Wind gust                             24
Clouds        SC B1 B2 OV OV OV OV OV OV OV B2 B2 B2 B2 SC B2 B1 SC SC SC SC SC
PoP 12hr                     90          90          40          20           5
QPF 12hr                   0.51        0.22        0.09           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs     S     C  D  D  D  D  D  D  C  C  C  C  S  S  S  S
Tstms          S     C  S           S  S
Obvis                                             PF PF
Heat index    83
Max heat         83


Date           07/17/25  Fri 07/18/25  Sat 07/19/25  Sun 07/20/25  Mon 07/21/25
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      51    79      52    87      56    88      54    84
Temp          72 78 59   51 71 78 60   53 79 85 66   56 81 85 64   55 78 80
Dewpt         52 55 53   50 53 52 50   49 53 52 53   51 53 50 52   48 48 47
PWind dir        SE       N    NW       E    SE      SE     W       W     W
Wind char        GN      LT    LT      LT    LT      LT    GN      LT    GN
Avg clouds    SC SC B1   SC B1 SC FW   FW SC SC SC   B1 SC SC SC   SC SC SC
PoP 12hr         20      30    10       5    10      10    20      20    20
Rain shwrs        S  C    S                                 S  S          S
Tstms             S  C                                      S  S

$$
MTZ314-151000-
Lewistown-Fergus MT
47.05N 109.46W Elev. 4144 ft
217 PM MDT Mon Jul 14 2025

Date           07/14/25      Tue 07/15/25            Wed 07/16/25            Thu
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          56          45          62          42
Temp          92 89 74 62 56 52 51 52 54 53 51 49 48 46 50 54 60 62 55 50 45 43
Dewpt         47 51 59 58 56 52 51 52 53 50 51 49 48 46 48 49 48 48 49 47 45 43
RH            21 27 59 87100100100100 96 89100100100100 93 83 64 60 80 89100100
Wind dir      NW  N NE  N NE NE  E  E NE NE NE NE NE  E  E  E  E SE SE SE SE SE
Wind spd      10 10 11 10  9  8 10 11 12 12 10  8  6  5  5  6  9  9  9  8  5  5
Wind gust                             23
Clouds        FW B1 B2 B2 OV OV OV OV OV OV OV OV OV B2 B2 B2 B1 SC SC SC SC FW
PoP 12hr                     70         100          90          50          10
QPF 12hr                   0.20        0.51        0.34        0.09           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs        C  C  C  L  D  D  D  D  D  D  D  D  C  C  C  C
Tstms             C  C  S        S  C  C  S
Obvis                        PF                PF PF PF PF


Date           07/17/25  Fri 07/18/25  Sat 07/19/25  Sun 07/20/25  Mon 07/21/25
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      49    75      51    83      54    84      53    79
Temp          70 78 58   50 67 75 58   52 77 79 62   55 77 79 62   54 74 77
Dewpt         52 55 55   49 53 52 53   49 52 52 52   47 50 50 50   45 45 46
PWind dir        SE      SE    NW       E    SE      SE    NW      SW     W
Wind char        LT      LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    FW FW B1   SC SC FW FW   FW FW SC SC   SC SC SC SC   SC FW SC
PoP 12hr         10      30    10      10    20      20    20      20    20
Rain shwrs           C                        S  S          S  S          S
Tstms                C                        S  S          S  S          S

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