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Issued by NWS Glasgow, MT

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Point Forecast Matrices
National Weather Service Glasgow MT
1240 PM MDT Fri Sep 18 2026

MTZ017-182200-
Glasgow-Valley MT
48.22N 106.61W Elev. 2293 ft
1240 PM MDT Fri Sep 18 2026

Date             Fri 09/18/26            Sat 09/19/26            Sun 09/20/26
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          54          69          52          64
Temp                      78 77 65 61 58 55 58 65 67 66 59 57 55 53 54 60 64 62
Dewpt                     56 56 54 54 53 52 53 52 50 52 51 52 52 52 53 55 54 54
RH                        47 48 68 78 83 90 83 63 54 61 75 83 90 96 96 84 70 75
Wind dir                   N  N NE NE NE NE NE  E  E  E  E  E  E  E  E  E  E  E
Wind spd                   8 11 14 12 11 12 12 16 14 11 12 12 12 12 13 13 12 12
Wind gust                                   23
Clouds                    FW SC B1 B2 OV B2 B2 B1 OV OV OV OV OV OV OV B2 B2 B1
PoP 12hr                      0          10          30          50          40
QPF 12hr                      0           0        0.02        0.04        0.01
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                                S  S  S  S  S  S  C  C  C  C


Date               Mon 09/21/26  Tue 09/22/26  Wed 09/23/26  Thu 09/24/26
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            49    71      52    78      53    79      53    80
Temp          54   50 65 70 58   52 70 75 59   54 71 76 59   54 73 77
Dewpt         52   50 56 53 52   52 55 53 52   51 54 51 50   50 53 50
PWind dir           E    SE      SE    SE      SE    SE       E    SE
Wind char          GN    GN      GN    GN      LT    LT      LT    GN
Avg clouds    B2   B1 B1 SC FW   FW FW FW FW   FW SC FW FW   FW FW FW
PoP 12hr            5     0       0     0       0     5       5     0

$$
MTZ020-182200-
Wolf Point-Western Roosevelt MT
48.10N 105.58W Elev. 1985 ft
1240 PM MDT Fri Sep 18 2026

Date             Fri 09/18/26            Sat 09/19/26            Sun 09/20/26
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                      81          55          69          50          65
Temp                      80 79 66 61 58 56 58 65 67 66 59 55 54 52 54 60 64 62
Dewpt                     59 59 57 58 56 55 54 55 53 55 54 54 54 52 53 56 55 54
RH                        49 50 73 90 93 96 86 70 61 68 83 96100100 96 87 73 75
Wind dir                   N  N NE NE NE NE NE NE  E  E  E  E  E  E  E  E  E  E
Wind spd                   4  9 13 11 11 11 12 16 14 12 12 11 11 12 12 12 12 11
Clouds                    FW FW SC B2 B2 B2 B2 B1 B2 OV OV OV OV OV OV B2 B2 B2
PoP 12hr                      0          20          40          60          60
QPF 12hr                      0           0           0        0.13        0.05
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                                S  S  S  C  C  C  C  C  L  L  S  S


Date               Mon 09/21/26  Tue 09/22/26  Wed 09/23/26  Thu 09/24/26
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            47    73      50    80      52    82      52    83
Temp          53   48 66 71 56   51 72 77 58   53 74 78 59   53 75 79
Dewpt         53   48 55 53 52   51 56 54 54   53 56 53 52   51 54 51
PWind dir           E    SE      SE    SE      SE    SE      SE    SE
Wind char          GN    GN      GN    GN      LT    LT      LT    LT
Avg clouds    B2   B1 SC SC SC   FW FW FW FW   SC SC FW FW   FW FW FW
PoP 12hr            5     5       0     0       0     0       5     0

$$
MTZ022-182200-
Jordan-Garfield MT
47.33N 106.95W Elev. 2661 ft
1240 PM MDT Fri Sep 18 2026

Date             Fri 09/18/26            Sat 09/19/26            Sun 09/20/26
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          54          65          51          64
Temp                      77 77 66 60 58 56 57 61 63 63 58 55 54 53 54 58 61 63
Dewpt                     53 55 56 56 57 56 55 56 56 57 56 55 54 53 54 55 56 57
RH                        43 47 70 87 96100 93 84 78 81 93100100100100 90 84 81
Wind dir                   N  N  N NE NE  N NE NE NE NE  E  E  E  E  E  E  E  E
Wind spd                   9 10 10  9  8  9 11 12 13 11 10  9  9  9  9 10  9 10
Wind gust                       20 19          23    21 20                19
Clouds                    FW SC B1 B2 OV OV OV OV OV OV OV OV OV OV OV OV OV B2
PoP 12hr                      0          40          70          80          80
QPF 12hr                      0        0.05        0.49        0.47        0.10
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                             S  C  L  L  L  L  L  L  L  D  D  L  L
Tstms                                  S  S  S  S  S


Date               Mon 09/21/26  Tue 09/22/26  Wed 09/23/26  Thu 09/24/26
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    72      50    78      52    80      52    81
Temp          53   49 64 70 55   50 72 76 58   52 73 77 58   53 75 78
Dewpt         53   49 54 53 53   50 53 52 52   50 52 50 50   49 50 49
PWind dir          SE    SE      SE     S       S     S       S     S
Wind char          LT    GN      GN    LT      LT    LT      LT    LT
Avg clouds    B2   B1 B2 SC FW   FW SC FW FW   SC SC FW FW   FW SC FW
PoP 12hr           10     5       0     0       0     5       5     0

$$
MTZ024-182200-
Sidney-Richland MT
47.70N 104.20W Elev. 1985 ft
1240 PM MDT Fri Sep 18 2026

Date             Fri 09/18/26            Sat 09/19/26            Sun 09/20/26
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                      80          56          67          51          64
Temp                      80 78 66 62 59 58 59 65 66 64 58 56 54 53 54 61 63 61
Dewpt                     61 63 61 61 59 58 59 60 60 60 57 56 54 53 54 56 57 57
RH                        52 60 84 97100100100 84 81 87 96100100100100 84 81 87
Wind dir                   S NE NE NE NE NE NE NE NE NE  E  E  E  E  E  E  E  E
Wind spd                   5  5  8  5  4  6  9 11 12 12 11 10 10 10 10 11 12 10
Wind gust                                      21 23                   23 23
Clouds                    FW B1 B1 B1 B2 OV OV OV OV OV OV OV OV OV OV OV OV B2
PoP 12hr                      5          40          60          70          60
QPF 12hr                      0        0.05        0.22        0.19        0.11
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                    C  C  S  S  C  C  C  C  C  C  L  L  L  L  L  L
Tstms                         S  S


Date               Mon 09/21/26  Tue 09/22/26  Wed 09/23/26  Thu 09/24/26
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    71      50    77      53    80      53    82
Temp          53   49 67 69 55   51 71 73 59   53 74 76 60   54 76 77
Dewpt         53   49 56 55 52   51 57 57 56   53 59 57 55   53 58 55
PWind dir          SE    SE      SE     S      SE     S       S    SE
Wind char          LT    GN      GN    GN      GN    LT      LT    LT
Avg clouds    B2   B1 B1 SC SC   FW SC FW FW   FW SC FW FW   FW FW FW
PoP 12hr            5     5       0     0       5    10      20     5
Rain shwrs                                               S

$$
MTZ025-182200-
Glendive-Dawson MT
47.13N 104.80W Elev. 2457 ft
1240 PM MDT Fri Sep 18 2026

Date             Fri 09/18/26            Sat 09/19/26            Sun 09/20/26
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                      81          57          65          52          62
Temp                      81 80 68 63 59 58 59 63 63 63 58 57 55 54 55 60 60 61
Dewpt                     60 61 60 60 59 58 59 62 61 62 58 57 55 54 55 59 58 58
RH                        49 52 76 90100100100 97 93 97100100100100100 96 93 90
Wind dir                   S NE NE NE NE NE NE NE NE NE  E  E  E  E  E  E  E  E
Wind spd                   3  5  9  6  5  9 10 12 13 13 12 12 12 12 11 12 12 11
Clouds                    CL FW SC B1 B2 OV OV OV OV OV OV OV OV OV OV OV OV OV
PoP 12hr                      0          50          80          80          80
QPF 12hr                      0        0.12        0.29        0.43        0.28
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                          S  C  C  C  L  L  D  L  L  L  D  D  L  L  S
Tstms                               S  C        S


Date               Mon 09/21/26  Tue 09/22/26  Wed 09/23/26  Thu 09/24/26
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            49    70      50    78      53    81      53    82
Temp          53   50 67 69 54   51 72 75 59   53 74 77 59   54 76 78
Dewpt         53   50 57 55 52   51 58 58 55   53 59 57 53   52 57 55
PWind dir           E    SE      SE     S      SE     S       S    SE
Wind char          GN    GN      GN    GN      GN    LT      LT    LT
Avg clouds    B2   B2 B1 B1 SC   FW FW FW FW   FW SC FW FW   FW FW FW
PoP 12hr           10     5       0     0       5    20      10     5
Rain shwrs     S                                      S

$$