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Point Forecast Matrices
National Weather Service Great Falls MT
902 AM MDT Mon Sep 18 2017

MTZ012-182300-
Great Falls-Cascade MT
47.47N 111.38W Elev. 3663 ft
902 AM MDT Mon Sep 18 2017

Date             Mon 09/18/17            Tue 09/19/17            Wed 09/20/17
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                      63          40          55          38          55
Temp                   61 63 55 48 45 42 40 44 52 55 54 46 42 40 38 43 51 55 54
Dewpt                  40 40 43 37 34 31 30 30 31 29 29 28 29 28 26 29 32 33 34
RH                     46 43 64 65 65 65 67 57 44 37 38 49 60 62 62 57 48 43 46
Wind dir               SW SW  W SW SW SW SW SW SW  W SW SW SW SW  S SW SW SW SW
Wind spd               13 14 12  9 12 11 10 17 18 20 19 14 20 19 18 18 19 16 17
Clouds                 OV OV OV OV B2 B1 B1 SC SC B1 B1 B1 B1 B1 B1 B1 B2 B2 B2
PoP 12hr                     30          60          20          20          40
QPF 12hr                   0.04        0.03        0.02           0        0.01
Snow 12hr                 00-00       00-00       00-00
Rain shwrs              C  C  L  L  C  C        S  S  S  S        S  S  C  C  C
Tstms                                              S


Date               Thu 09/21/17  Fri 09/22/17  Sat 09/23/17  Sun 09/24/17
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            36    49      33    45      33    53      34    57
Temp          42   38 45 48 38   33 42 45 37   33 46 52 39   34 48 55
Dewpt         34   34 35 34 32   31 37 36 34   32 39 41 34   31 39 42
PWind dir          SW    NW      NE     N      NW     W       S    SW
Wind char          GN    LT      GN    GN      LT    LT      LT    LT
Avg clouds    B2   B2 B1 B2 B2   B2 B2 B2 B2   B1 B1 B1 B1   SC SC SC
PoP 12hr           30    40      50    50      30    30      10    10
Rain                                                  S
Rain shwrs     C    C  C  C  C    C  C  C  C    S  C

$$
MTZ010-182300-
Cut Bank-Glacier MT
48.60N 112.39W Elev. 3838 ft
902 AM MDT Mon Sep 18 2017

Date             Mon 09/18/17            Tue 09/19/17            Wed 09/20/17
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                      59          36          55          35          53
Temp                   57 59 53 46 42 38 36 42 52 55 51 44 40 37 35 41 50 53 49
Dewpt                  40 39 32 30 30 29 29 28 25 26 25 30 30 28 28 29 29 29 30
RH                     53 47 44 53 62 70 75 57 35 32 36 57 67 70 75 62 44 39 48
Wind dir               SW SW  W  W  W  W  W  W  W  W  W  W  W  W  W  W  W  W  W
Wind spd               14 17 19 16 14 14 12 18 23 24 24 19 21 19 18 19 19 16 16
Clouds                 OV OV OV B2 B1 SC SC SC SC SC SC SC SC SC B1 SC B1 B1 B2
PoP 12hr                     30          30          10          10          30
QPF 12hr                   0.01           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs              S  S  C  C  S                             S  S  C  C  C


Date               Thu 09/21/17  Fri 09/22/17  Sat 09/23/17  Sun 09/24/17
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            33    48      32    45      31    53      33    57
Temp          37   37 44 45 35   33 41 44 34   31 48 52 39   34 52 54
Dewpt         30   35 32 32 29   32 33 32 30   30 39 40 35   32 40 41
PWind dir           W    NW       N     N      NW    SW      SW     W
Wind char          GN    GN      GN    GN      GN    GN      GN    GN
Avg clouds    B2   B2 B1 B1 B2   B2 B2 B2 B2   B1 B1 SC SC   SC SC FW
PoP 12hr           30    20      40    40      20    40      10    10
Rain                                                  C
Rain shwrs     C    C  S  S  C    C  C  C  S    S
Snowshwrs                         C             S

$$
MTZ014-182300-
Helena-Lewis & Clark MT
46.61N 111.96W Elev. 3893 ft
902 AM MDT Mon Sep 18 2017

Date             Mon 09/18/17            Tue 09/19/17            Wed 09/20/17
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                      60          36          53          34          54
Temp                   57 60 52 43 42 38 36 39 46 52 51 42 39 36 34 39 47 53 52
Dewpt                  43 44 43 35 36 32 30 30 30 31 33 32 30 29 28 30 33 36 39
RH                     59 55 71 73 79 79 79 70 53 44 50 67 70 75 78 70 58 52 61
Wind dir               SW SW  W  W  W  W  W  W  W  W  W  W SW SW SW SW  W  W SW
Wind spd                8 10 10  9  4  4  3  5 11 14 14 11  9  4  4  5  9 10 14
Wind gust                                         25
Clouds                 OV OV OV OV OV B2 B2 B2 B1 B1 B2 B1 B1 B2 B1 B2 B2 B2 B2
PoP 12hr                     40          60          40          40          60
QPF 12hr                   0.05        0.08        0.04        0.01        0.05
Snow 12hr                 00-00       00-00       00-00
Rain shwrs              C  C  L  L  C  C  C  C  C  C  C  C  S  S  C  C  L  L  C
Tstms                                           S  C  S                 S  S


Date               Thu 09/21/17  Fri 09/22/17  Sat 09/23/17  Sun 09/24/17
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            32    48      34    45      33    52      33    55
Temp          37   40 44 45 37   34 42 44 35   35 47 50 37   36 47 50
Dewpt         33   36 35 33 32   31 37 34 31   30 36 36 29   30 37 35
PWind dir          SW    NW       N     N      NW    NW      NW     W
Wind char          GN    LT      LT    LT      LT    LT      LT    LT
Avg clouds    B2   B1 B2 B2 B2   B2 B2 B2 B2   B1 B1 SC B1   SC SC SC
PoP 12hr           40    40      50    50      20    30      20    10
Rain                                                  S  S
Rain shwrs     C    C  C  C  C    C  C  C  S    S  C
Snowshwrs           C

$$
MTZ055-182300-
Bozeman-Gallatin MT
45.78N 111.16W Elev. 4475 ft
902 AM MDT Mon Sep 18 2017

Date             Mon 09/18/17            Tue 09/19/17            Wed 09/20/17
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                      63          36          52          32          53
Temp                   58 63 57 49 44 38 37 37 47 52 48 43 38 34 32 40 50 53 50
Dewpt                  41 36 43 44 40 34 33 31 31 29 31 33 30 27 24 27 32 33 35
RH                     53 36 59 83 86 85 85 79 53 41 51 67 73 75 72 59 50 46 56
Wind dir               SW SW SW  W  W  W SW SW  W  W  W SW  S  S SW SW SW SW SW
Wind spd               12 19 16 13  8  8  6  8 11 12 16 14  6 10 10 12 14 17 27
Wind gust                    27                   25                   31 33
Clouds                 OV OV OV OV OV OV B2 B2 B2 B1 B2 B2 B2 B1 B1 B1 B2 B2 B2
PoP 12hr                     40          80          50          40          50
QPF 12hr                   0.03        0.28        0.07        0.03        0.02
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                 S  D  D  D  D  C  C  C  C  C  C  C  C     C  C  C  C
Snowshwrs                                                         C
Tstms                                           S  C  S                    S


Date               Thu 09/21/17  Fri 09/22/17  Sat 09/23/17  Sun 09/24/17
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            31    46      31    43      30    49      31    52
Temp          39   36 44 41 37   31 41 42 38   31 41 45 35   31 43 43
Dewpt         36   34 36 35 35   30 33 34 32   29 34 37 30   29 36 36
PWind dir          SW    NW       N     N       N     W       E    SW
Wind char          BZ    LT      LT    LT      LT    LT      LT    LT
Avg clouds    B2   B2 B2 OV OV   B2 B2 B2 B2   B1 B1 B1 B1   SC B1 SC
PoP 12hr           40    60      60    50      30    20      20    20
Rain                                                  S  S       S  S
Rain shwrs     C    C  L  C  L    L  C  C  C    S  S
Snow                                                             S
Snowshwrs           C             L  C          S  S

$$
MTZ055-182300-
West Yellowstone-Gallatin MT
44.66N 111.11W Elev. 6700 ft
902 AM MDT Mon Sep 18 2017

Date             Mon 09/18/17            Tue 09/19/17            Wed 09/20/17
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                      57          28          45          22          47
Temp                   53 56 51 43 39 33 30 29 44 42 40 32 27 25 22 33 45 45 47
Dewpt                  33 29 36 39 38 33 30 28 34 35 30 29 22 23 22 24 30 34 34
RH                     46 35 56 86 96100100 96 68 76 67 88 81 92100 69 55 65 60
Wind dir               SW SW SW  S  S SW SW SW SW SW SW SW SW SW SW SW SW SW SW
Wind spd               19 20  9  8 13 14 14 14 13 13 13 11 14 13 10 14 18 16 14
Wind gust                 31 19                      24                   27
Clouds                 B2 OV OV OV OV OV OV OV OV OV B2 B2 B2 B2 B2 B2 B2 B2 OV
PoP 12hr                     40          80          70          50          70
QPF 12hr                   0.02        0.42        0.28        0.08        0.16
Snow 12hr                 00-00       00-00       00-00
Rain shwrs              S  S  L  L  D  D        L  L  C                 L  L  L
Snowshwrs                                 L  L  L  L  C  C  S  S  C  C
Tstms                                  S  S  S  C  C  C                 S  S


Date               Thu 09/21/17  Fri 09/22/17  Sat 09/23/17  Sun 09/24/17
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            24    39      24    37      24    43      24    44
Temp          33   30 37 32 26   25 36 35 26   24 35 36 29   26 35 35
Dewpt         32   28 29 24 25   23 25 21 23   22 25 22 25   23 24 21
PWind dir           S     S       N     W       N    NE      NE     N
Wind char          GN    LT      LT    LT      LT    LT      LT    LT
Avg clouds    OV   B2 OV OV OV   B2 B2 B2 B2   B1 B1 B1 B2   SC B1 B1
PoP 12hr           60    50      50    40      20    20      30    20
Rain                                                  S  C       S  S
Rain shwrs     L    C  C  C             C  S
Snow                                                  S  C    S  S  S
Snowshwrs           C  C  C  C    C  C  C  S    S  S
Tstms                                   S

$$
MTZ008-182300-
Dillon-Beaverhead MT
45.26N 112.55W Elev. 5357 ft
902 AM MDT Mon Sep 18 2017

Date             Mon 09/18/17            Tue 09/19/17            Wed 09/20/17
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                      58          34          49          30          51
Temp                   56 57 54 45 42 37 34 36 44 48 47 35 32 30 30 35 48 51 49
Dewpt                  39 38 42 38 37 32 30 29 29 28 30 25 24 24 23 26 33 34 36
RH                     53 49 64 76 82 82 85 75 55 46 51 66 72 78 75 69 56 52 61
Wind dir               SW SW SW  N SE SW  S SW SW  W  W SW  S  S  S  S SW SW SW
Wind spd               18 26 20 18 12  6 11 11 13 20 17 11 17 17 13 17 21 23 27
Wind gust                 39                                              36
Clouds                 OV OV OV OV OV B2 B1 B2 B1 B2 B2 B2 B1 B1 B2 B2 B2 B2 B2
PoP 12hr                     40          60          30          20          60
QPF 12hr                   0.10        0.16        0.04           0        0.03
Snow 12hr                 00-00       00-00       00-00
Rain shwrs              C  C  L  L  L  L  C  C  C  C  S  S           C  L  L  C
Snowshwrs                                                   S  S  C
Tstms                      S  S                 C  C                       S  S


Date               Thu 09/21/17  Fri 09/22/17  Sat 09/23/17  Sun 09/24/17
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            28    43      28    39      26    46      27    50
Temp          35   31 40 39 31   28 34 39 28   26 34 41 30   28 39 42
Dewpt         31   26 30 31 28   26 25 27 24   21 23 27 21   23 28 27
PWind dir          SW    NE      NE     N      NE    NE       N    NW
Wind char          BZ    LT      LT    LT      LT    LT      GN    LT
Avg clouds    B2   B1 B1 B2 OV   B2 B2 B2 B2   B1 B1 SC B1   SC SC SC
PoP 12hr           30    50      50    40      20    20      20    20
Rain                                                  S  S       S  S
Rain shwrs     C    C  C  C  C       C  C  S
Snow                                                     S    S  S
Snowshwrs           C  C     C    C  C     S    S  S
Tstms          S                        S  S

$$
MTZ011-182300-
Havre-Hill MT
48.54N 109.76W Elev. 2585 ft
902 AM MDT Mon Sep 18 2017

Date             Mon 09/18/17            Tue 09/19/17            Wed 09/20/17
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                      71          41          62          37          60
Temp                   66 71 68 54 48 43 41 46 56 61 60 48 43 39 37 43 56 59 59
Dewpt                  39 41 42 44 38 33 32 33 33 31 28 28 29 29 29 30 32 33 35
RH                     37 34 39 69 68 67 70 60 42 32 29 46 57 67 72 60 40 37 40
Wind dir               SW SW SW SW  W SW SW SW  W  W  W  W  W SW SW SW  W  W  W
Wind spd               13 11 12 10  8 10 12 16 16 17 18 13 13 16 18 21 24 21 17
Clouds                 B2 OV OV OV OV B2 B1 SC SC FW SC SC SC SC SC SC SC B1 B1
PoP 12hr                     20          60           5           5          20
QPF 12hr                      0        0.03           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                    L  L  C  C                                S  S  C


Date               Thu 09/21/17  Fri 09/22/17  Sat 09/23/17  Sun 09/24/17
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            36    54      35    51      35    57      36    60
Temp          42   38 49 51 38   36 48 50 40   35 52 56 43   37 55 58
Dewpt         32   32 32 33 29   32 37 37 34   33 43 43 35   33 41 41
PWind dir           W    NW       N     N       N    SW      SE     S
Wind char          GN    GN      LT    LT      LT    LT      LT    LT
Avg clouds    B1   B1 B1 B1 B1   B1 B2 B2 B2   B1 B1 SC SC   SC SC FW
PoP 12hr           40    10      30    40      20    20      10    10
Rain                                                  S
Rain shwrs     C    S        S    C  C  C  S    S

$$
MTZ051-182300-
Lewistown-Fergus MT
47.05N 109.46W Elev. 4144 ft
902 AM MDT Mon Sep 18 2017

Date             Mon 09/18/17            Tue 09/19/17            Wed 09/20/17
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                      66          39          54          33          56
Temp                   63 66 61 52 45 40 39 43 50 54 50 43 39 35 34 43 52 56 54
Dewpt                  36 41 41 42 37 32 30 30 29 30 28 28 27 25 23 27 29 32 33
RH                     36 40 48 69 73 73 70 60 44 40 42 55 62 66 64 53 41 40 45
Wind dir               SW SW SW  W  W  W  W  W  W  W  W SW SW SW SW SW SW  W SW
Wind spd               11 14 10  9  9  9  9  8 12 16 16 12 13 12 14 17 19 18 17
Wind gust                                                                 31
Clouds                 B2 B2 OV OV OV B2 B2 SC B1 B1 B2 B1 B1 SC SC SC B1 B2 B2
PoP 12hr                     20          40          20          20          30
QPF 12hr                      0        0.06           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                    C  C  C  C  S  S  S  S  S  S  S  S  S  S  C  C  C
Tstms                                           S  S


Date               Thu 09/21/17  Fri 09/22/17  Sat 09/23/17  Sun 09/24/17
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            33    48      33    44      32    51      33    55
Temp          39   37 45 47 36   33 40 44 36   32 46 50 37   34 49 51
Dewpt         31   33 34 36 32   32 34 37 33   31 39 42 31   31 41 41
PWind dir           W    NW       N     N      NW     W      SE    SW
Wind char          BZ    GN      LT    LT      LT    LT      LT    LT
Avg clouds    B2   B1 B1 B2 B2   B2 B2 B2 B2   B2 B1 B1 B1   SC SC SC
PoP 12hr           40    40      60    50      40    20      10    10
Rain                                                  S
Rain shwrs     C    C  S  C  C    L  C  C  C    S  S
Snowshwrs                                       S  S

$$
weather.gov/greatfalls



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