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Point Forecast Matrices
National Weather Service Great Falls MT
843 AM MST Sun Dec 17 2017

MTZ012-172300-
Great Falls-Cascade MT
47.47N 111.38W Elev. 3663 ft
843 AM MST Sun Dec 17 2017

Date                Sun 12/17/17            Mon 12/18/17            Tue 12/19/17
MST 3hrly     02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17
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                      42          37          46          25          39
Temp                   34 42 37 38 42 43 43 44 45 45 37 33 30 28 25 27 32 39 38
Dewpt                  14 20 22 22 27 28 28 31 29 26 26 26 25 24 20 24 27 31 29
RH                     43 41 54 52 55 55 55 60 53 47 64 75 81 85 81 88 81 73 70
Wind dir               SW SW SW SW SW SW SW SW SW  W  N NW SW SE  E NE SE  E  S
Wind spd               28 26 26 25 26 28 26 25 21 18 13  9  9  6 10  8 11 12 18
Wind gust              40 36 36 36 37 41 37 36 32
Clouds                 B1 B1 B2 OV OV OV B2 B2 OV B2 OV OV OV OV OV OV OV OV OV
PoP 12hr                      5          10          30          50          50
QPF 12hr                      0           0        0.01        0.09        0.09
Snow 12hr                 00-00       00-00       00-00
Rain                                      S  S  C  C                          C
Snow                                                  C  C  C  C  C  C  C  C  C


Date               Wed 12/20/17  Thu 12/21/17  Fri 12/22/17  Sat 12/23/17
MST 6hrly     23   05 11 17 23   05 11 17 23   05 11 17 23   05 11 17
UTC 6hrly     06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Min/Max            27    27       4    24      13    19       6    19
Temp          39   33 19 11  6    5 21 22 16   13 19 12  6    9 19 13
Dewpt         27   24 15  8  3    1 10 12  8    9 11  8  3    5  8  7
PWind dir           S    NW      NW    SW      SW     N      NW     W
Wind char          BZ    BZ      GN    BZ      BZ    BZ      BZ    BZ
Avg clouds    OV   OV OV OV OV   B1 FW FW B1   B2 B2 B2 OV   B2 B2 B1
PoP 12hr           40    80      30     5      30    40      40    20
Rain           C
Snow           C    C  D  L  C                  C  C  C  C    C  S

$$
MTZ010-172300-
Cut Bank-Glacier MT
48.60N 112.39W Elev. 3838 ft
843 AM MST Sun Dec 17 2017

Date                Sun 12/17/17            Mon 12/18/17            Tue 12/19/17
MST 3hrly     02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17
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                      40          35          39          18          30
Temp                   36 40 35 36 40 40 40 37 32 35 24 22 21 19 18 20 24 30 28
Dewpt                  21 20 22 24 27 28 28 29 26 28 20 18 16 14 15 19 23 27 27
RH                     54 44 59 61 59 62 62 72 78 75 84 84 81 80 88 96 96 88 96
Wind dir                W  W  W  W SW  W  W  W NW NW NW NW  W  N  E  E SE SE SE
Wind spd               31 31 25 23 24 25 26 19 16 13 12 10 10  8  6  9 12 14 16
Wind gust              42 42 35 33 35 36 37
Clouds                 B2 OV OV B2 B2 B2 B2 B2 OV OV OV B2 B2 B2 OV OV OV OV OV
PoP 12hr                     10          10          50          40          70
QPF 12hr                      0           0        0.09        0.08        0.23
Snow 12hr                 00-00       00-00           1
Snow                                      C  C  C  C  C  C  C  C  L  L  L  L  C


Date               Wed 12/20/17  Thu 12/21/17  Fri 12/22/17  Sat 12/23/17
MST 6hrly     23   05 11 17 23   05 11 17 23   05 11 17 23   05 11 17
UTC 6hrly     06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Min/Max            18    19       3    23      12    18       7    22
Temp          30   23 14  9  4    7 22 17 17   12 18  7  9   10 22 11
Dewpt         25   21 13  9 -1    1 11  8 11    9 12  5  3    5 15  4
PWind dir          SE    NW      NW     W      NW     N      NW    NW
Wind char          BZ    BZ      BZ    BZ      BZ    BZ      BZ    BZ
Avg clouds    OV   OV OV OV B2   SC FW SC B1   B2 B2 B2 B2   B2 B1 B1
PoP 12hr           60    60      20     5      30    30      30    10
Snow           C    L  L  C  S                  C  C  C  C    S

$$
MTZ014-172300-
Helena-Lewis & Clark MT
46.61N 111.96W Elev. 3893 ft
843 AM MST Sun Dec 17 2017

Date                Sun 12/17/17            Mon 12/18/17            Tue 12/19/17
MST 3hrly     02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17
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                      35          28          47          29          45
Temp                   30 35 29 32 33 33 34 34 42 46 45 40 37 32 32 29 38 44 44
Dewpt                  17 19 20 25 28 28 29 29 34 32 35 35 33 29 29 27 31 31 32
RH                     58 52 69 75 82 82 82 82 73 58 68 82 85 88 88 92 76 60 62
Wind dir               SW SW SW SW  S  S SW SW  W  W  W  W SW SW  S SW SW  S  S
Wind spd               16 17 14  6  6  9 10 10 10 13 10  6  4  3  3  4  4  8  8
Clouds                 B1 B2 B2 OV OV B2 B2 B1 B2 B2 B2 B2 OV OV OV OV OV B2 B2
PoP 12hr                      5          10          30          50          30
QPF 12hr                      0           0           0        0.02        0.01
Snow 12hr                 00-00       00-00       00-00
Rain                                         S  C  C  C  C              C  C  C
Snow                                      S  S              C  C  C  C  C


Date               Wed 12/20/17  Thu 12/21/17  Fri 12/22/17  Sat 12/23/17
MST 6hrly     23   05 11 17 23   05 11 17 23   05 11 17 23   05 11 17
UTC 6hrly     06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Min/Max            26    26       4    17       7    15       3    12
Temp          36   31 20 11  8    4 16 12 12    7 15  6  3    5 11 10
Dewpt         31   25 10 -1  5    4  7  1  8    6  8 -3 -1    2  2  0
PWind dir           S    NW      SW    SW       W     N       E    NW
Wind char          LT    GN      LT    LT      LT    LT      LT    LT
Avg clouds    B2   B2 OV OV OV   B1 SC SC B1   B2 B2 B2 B2   B2 B2 B1
PoP 12hr           30    60      30     5      20    30      30    20
Rain           C
Snow           C    C  L  L  C                  S  C  C  C    S  S

$$
MTZ055-172300-
Bozeman-Gallatin MT
45.78N 111.16W Elev. 4475 ft
843 AM MST Sun Dec 17 2017

Date                Sun 12/17/17            Mon 12/18/17            Tue 12/19/17
MST 3hrly     02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17
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                      25          21          45          28          45
Temp                   14 25 23 24 27 31 32 32 42 44 43 38 37 33 32 28 38 44 44
Dewpt                   5 13 14 18 19 23 27 26 32 33 32 32 31 29 27 24 30 34 32
RH                     67 60 68 77 71 72 81 78 67 65 65 79 79 85 81 85 73 68 62
Wind dir               SW SW  S  S  S  S SW SW SW SW SW SW SW SW  S SW  S SW SW
Wind spd                3  4  5  5  6  9  9  9  9 12 10  8  6  6  8  6  5 10  6
Clouds                 B2 B2 B1 B2 B2 OV B2 B2 B2 B2 OV OV OV OV OV OV OV OV OV
PoP 12hr                      5           5          20          40          30
QPF 12hr                      0           0           0        0.02        0.01
Snow 12hr                 00-00       00-00       00-00
Rain                                            S  S  C                    C  S
Snow                                      S  S           C  C  C  C  C  C


Date               Wed 12/20/17  Thu 12/21/17  Fri 12/22/17  Sat 12/23/17
MST 6hrly     23   05 11 17 23   05 11 17 23   05 11 17 23   05 11 17
UTC 6hrly     06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Min/Max            26    29       0    13       2    15      -3     7
Temp          38   28 27 16  3    1 11 11  2    7 15 11 -2    1  4  6
Dewpt         29   19 23  9 -3    1  5  2 -3    7 10  0 -7   -2 -5 -3
PWind dir          SW     W       W    SE      SW     W       N    SE
Wind char          LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    OV   B2 OV OV OV   B2 B1 SC SC   B1 B2 B2 B2   B2 B2 B2
PoP 12hr           30    70      40    10      20    30      30    30
Rain           S
Snow           S    C  L  L  C    C             S  C  C  C    C  C  S

$$
MTZ055-172300-
West Yellowstone-Gallatin MT
44.66N 111.11W Elev. 6700 ft
843 AM MST Sun Dec 17 2017

Date                Sun 12/17/17            Mon 12/18/17            Tue 12/19/17
MST 3hrly     02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17
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                      20          11          26          20          29
Temp                    9 20 17 16 16 16 18 18 21 25 26 24 23 22 21 20 24 29 22
Dewpt                   6 12 13 13 13 14 15 16 15 17 20 19 20 20 19 19 20 22 15
RH                     87 71 84 88 88 92 88 92 77 71 78 81 88 92 92 96 84 75 74
Wind dir               SW SW SW SW  S  S  S SW SW SW SW SW SW SW SW  S SW  S  S
Wind spd                6  8  5  4  5  9  8  8 10 10  9  6  6  9  8  8  9  9  8
Clouds                 B1 B1 B2 B2 B2 B2 OV B2 OV OV OV OV OV OV OV OV B2 OV B2
PoP 12hr                     10          20          40          50          40
QPF 12hr                      0           0        0.01        0.04        0.02
Snow 12hr                 00-00           T           T
Snow                          S  S  S  S  C  C  C  C  C  C  C  C  C  C  C  C  S
Wind chill             -2
Min chill              -7


Date               Wed 12/20/17  Thu 12/21/17  Fri 12/22/17  Sat 12/23/17
MST 6hrly     23   05 11 17 23   05 11 17 23   05 11 17 23   05 11 17
UTC 6hrly     06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Min/Max            18    26      -8    12     -10    12     -12     6
Temp          18   18 25 23  6   -8  7 10 -5   -9  6 11 -5  -12 -2  5
Dewpt         17   12 24 19  5   -8  3  2 -6  -10  0  5 -6  -12 -8 -2
PWind dir           S    SW       N     N       S    NE       N     N
Wind char          GN    GN      LT    LT      LT    LT      LT    LT
Avg clouds    B2   B2 OV OV OV   B2 SC SC SC   B1 B2 B2 B2   B2 B1 B1
PoP 12hr           30    80      40     5      20    40      20    20
Snow           S    C  D  D  C    C             S  C  C  S    S  S

$$
MTZ008-172300-
Dillon-Beaverhead MT
45.26N 112.55W Elev. 5357 ft
843 AM MST Sun Dec 17 2017

Date                Sun 12/17/17            Mon 12/18/17            Tue 12/19/17
MST 3hrly     02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17
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                      30          22          43          27          45
Temp                   24 30 24 26 26 27 29 30 37 42 38 33 31 31 29 27 38 45 39
Dewpt                  12 13 12 14 16 19 21 23 25 27 25 24 22 25 22 22 27 30 24
RH                     60 49 60 60 65 71 72 75 61 55 59 69 69 78 75 81 64 55 54
Wind dir               SW SW  S  S  S  S  S  S  S SW  S  S  S  S  S  S  S  S  S
Wind spd                9  9  9 11 13 13 16 16 17 17 14 13 12 11 12 12 13 13 14
Clouds                 B2 B2 B2 OV OV B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2
PoP 12hr                      5           5          10          20          20
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain                                                                       S
Snow                                                  S  S  S  S  S  S  S     S


Date               Wed 12/20/17  Thu 12/21/17  Fri 12/22/17  Sat 12/23/17
MST 6hrly     23   05 11 17 23   05 11 17 23   05 11 17 23   05 11 17
UTC 6hrly     06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Min/Max            25    30       2    16       3    18      -1     8
Temp          30   26 29 18  8    2 15  8  3    8 18 11  6   -1  8  2
Dewpt         22   18 20  5  1    0  5 -4 -6    7 11 -2 -1   -5 -3 -9
PWind dir           S    NW       E    SW       S     E      NE     W
Wind char          GN    GN      GN    GN      GN    GN      GN    GN
Avg clouds    B2   B2 B2 OV OV   B2 SC SC SC   B1 B2 B2 B2   B2 B2 B1
PoP 12hr           20    60      30    10      10    20      30    20
Snow           S    S  C  L  C    C                S  S  C    S  S

$$
MTZ011-172300-
Havre-Hill MT
48.54N 109.76W Elev. 2585 ft
843 AM MST Sun Dec 17 2017

Date                Sun 12/17/17            Mon 12/18/17            Tue 12/19/17
MST 3hrly     02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17
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                      40          31          40          18          33
Temp                   30 40 36 31 32 37 37 37 39 39 33 24 21 21 18 20 28 33 28
Dewpt                  15 22 23 21 24 29 29 31 33 30 26 20 18 17 16 16 21 24 24
RH                     53 48 59 66 72 72 72 79 79 70 75 84 88 84 92 84 75 69 85
Wind dir               SW SW SW SW SW SW  W  W NW NW  W  W  W  W SE  E  E  E  E
Wind spd               26 25 19 14 18 20 17 13 12 11 10  8  6  6  8  6 10 11 12
Wind gust              36
Clouds                 B1 B2 B2 B2 OV B2 OV OV OV B2 B2 B2 B2 B2 B2 B2 OV OV OV
PoP 12hr                      5          10          50          30          70
QPF 12hr                      0           0        0.05        0.01        0.10
Snow 12hr                 00-00       00-00           T
Rain                                      C  C
Snow                                      C  C  C  C  C  C  C  C  C  C  L  L  L


Date               Wed 12/20/17  Thu 12/21/17  Fri 12/22/17  Sat 12/23/17
MST 6hrly     23   05 11 17 23   05 11 17 23   05 11 17 23   05 11 17
UTC 6hrly     06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Min/Max            22    23      -3    20       9    18       2    19
Temp          25   25 19 13 -2    1 16 19 10   12 17 15  2    9 17 17
Dewpt         22   20 17 13 -4   -3  8 11  7    9  8 10 -2    3  9  8
PWind dir           E     N      NW    SW       W    NW       W     W
Wind char          GN    GN      GN    GN      GN    BZ      GN    BZ
Avg clouds    OV   OV OV OV B2   SC SC SC B1   B2 B2 B2 B2   B2 B1 B1
PoP 12hr           60    80      20     5      20    20      30    10
Snow           L    L  D  L  S                  S  S  S  C    S

$$
MTZ051-172300-
Lewistown-Fergus MT
47.05N 109.46W Elev. 4144 ft
843 AM MST Sun Dec 17 2017

Date                Sun 12/17/17            Mon 12/18/17            Tue 12/19/17
MST 3hrly     02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17
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                      38          31          44          23          39
Temp                   32 38 34 32 36 40 42 42 43 43 36 29 25 25 23 25 32 38 37
Dewpt                  15 19 22 22 28 31 31 32 32 32 33 26 23 23 20 23 29 33 32
RH                     49 46 61 66 72 70 65 67 65 65 89 88 92 92 88 92 88 82 82
Wind dir                W  W SW SW SW SW  W  W  W  W NW  W  W  W  S  S SE  S  S
Wind spd               14 16 14 14 17 23 23 20 21 19 13  8  5  3  5 10  9 11 12
Wind gust                             33 33    32
Clouds                 SC SC B1 B1 B2 B2 B2 B2 B2 B2 OV OV OV OV OV OV OV OV OV
PoP 12hr                      5          10          40          60          50
QPF 12hr                      0           0        0.02        0.15        0.09
Snow 12hr                 00-00       00-00       00-00
Rain                                      C  C  C  C
Snow                                                  L  L  C  C  C  C  C  C  C


Date               Wed 12/20/17  Thu 12/21/17  Fri 12/22/17  Sat 12/23/17
MST 6hrly     23   05 11 17 23   05 11 17 23   05 11 17 23   05 11 17
UTC 6hrly     06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Min/Max            27    27       3    22      11    15       2    13
Temp          37   34 21 12  6    4 18 21 14   13 13 11  3    4 11 12
Dewpt         30   27 19 11  4    1  5 10  7   11  4  9  0   -2  2  3
PWind dir           S    NW      NW    SW       W    NW      NW     W
Wind char          GN    GN      GN    GN      GN    GN      GN    GN
Avg clouds    OV   OV B2 OV OV   B2 SC FW SC   B2 B2 B2 B2   B2 B2 B1
PoP 12hr           30    60      30     5      20    30      30    20
Snow           C    C  L  L  C    S             S  C  C  C    S  S

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




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