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

MTZ012-172300-
Great Falls-Cascade MT
47.47N 111.38W Elev. 3663 ft
306 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          37          46          25          39
Temp             19 22 30 39 37 38 42 43 43 44 45 45 37 33 30 28 25 27 32 39 38
Dewpt             7  8 12 18 20 22 27 28 28 31 29 26 26 26 25 24 20 24 27 31 29
RH               59 54 46 42 50 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 SW SW  W  N NW SW SE  E NE SE  E  S
Wind spd         19 23 26 24 26 25 26 28 26 25 21 18 13  9  9  6 10  8 11 12 18
Wind gust           33 37 35 37 36 37 41 37 36 32
Clouds           FW B1 SC 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
306 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          30          39          18          30
Temp             23 24 35 39 34 36 40 40 40 37 32 35 24 22 21 19 18 20 24 30 28
Dewpt            12 13 19 20 20 24 27 28 28 29 26 28 20 18 16 14 15 19 23 27 27
RH               62 62 52 46 56 61 59 62 62 72 78 75 84 84 81 80 88 96 96 88 96
Wind dir          W  W  W  W  W  W SW  W  W  W NW NW NW NW  W  N  E  E SE SE SE
Wind spd         23 25 31 27 25 23 24 25 26 19 16 13 12 10 10  8  6  9 12 14 16
Wind gust        33 36 44 40 36 33 35 36 37
Clouds           B1 B1 B1 B2 B2 B2 B2 B2 B2 B2 OV OV OV B2 B2 B2 OV OV OV OV OV
PoP 12hr                      5           5          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
306 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                      36          29          47          29          45
Temp             13 15 26 35 31 32 33 33 34 34 42 46 45 40 37 32 32 29 38 44 44
Dewpt             9 10 15 19 22 25 28 28 29 29 34 32 35 35 33 29 29 27 31 31 32
RH               84 80 62 52 69 75 82 82 82 82 73 58 68 82 85 88 88 92 76 60 62
Wind dir         SW SW SW SW SW SW  S  S SW SW  W  W  W  W SW SW  S SW SW  S  S
Wind spd          5  5  6  8  5  6  6  9 10 10 10 13 10  6  4  3  3  4  4  8  8
Clouds           SC B1 B1 B1 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
306 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                      32          23          45          28          45
Temp              6  9 21 31 29 24 27 31 32 32 42 44 43 38 37 33 32 28 38 44 44
Dewpt             3  4 12 20 19 18 19 23 27 26 32 33 32 32 31 29 27 24 30 34 32
RH               87 80 68 63 66 77 71 72 81 78 67 65 65 79 79 85 81 85 73 68 62
Wind dir         SW  S SW SW SW  S  S  S SW SW SW SW SW SW SW SW  S SW  S SW SW
Wind spd          4  4  4  5  6  5  6  9  9  9  9 12 10  8  6  6  8  6  5 10  6
Clouds           SC B1 B1 B1 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
Wind chill       -3
Min chill        -3    -1


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
306 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          16          26          20          29
Temp             -3  0 12 19 18 16 16 16 18 18 21 25 26 24 23 22 21 20 24 29 22
Dewpt            -3  0  8 11 13 13 13 14 15 16 15 17 20 19 20 20 19 19 20 22 15
RH              100100 84 70 80 88 88 92 88 92 77 71 78 81 88 92 92 96 84 75 74
Wind dir          S SW SW SW SW SW  S  S  S SW SW SW SW SW SW SW SW  S SW  S  S
Wind spd          3  3  6  6  5  4  5  9  8  8 10 10  9  6  6  9  8  8  9  9  8
Clouds           SC B1 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        0.01        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
Obvis             F  F
Wind chill      -11 -8
Min chill       -11    -8


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
306 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                      33          26          43          27          45
Temp              9 10 23 32 27 26 26 27 29 30 37 42 38 33 31 31 29 27 38 45 39
Dewpt             2  2 10 16 14 14 16 19 21 23 25 27 25 24 22 25 22 22 27 30 24
RH               72 69 57 51 57 60 65 71 72 75 61 55 59 69 69 78 75 81 64 55 54
Wind dir         SW  S SW SW  S  S  S  S  S  S  S SW  S  S  S  S  S  S  S  S  S
Wind spd          8  9  9  8 10 11 13 13 16 16 17 17 14 13 12 11 12 12 13 13 14
Clouds           SC B1 B2 B1 B1 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
Wind chill       -3 -3
Min chill        -3    -4


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
306 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          30          40          18          33
Temp             19 19 34 41 36 31 32 37 37 37 39 39 33 24 21 21 18 20 28 33 28
Dewpt            14 13 20 23 22 21 24 29 29 31 33 30 26 20 18 17 16 16 21 24 24
RH               80 77 56 48 56 66 72 72 72 79 79 70 75 84 88 84 92 84 75 69 85
Wind dir         SW SW SW SW SW SW SW SW  W  W NW NW  W  W  W  W SE  E  E  E  E
Wind spd         14 16 21 21 16 14 18 20 17 13 12 11 10  8  6  6  8  6 10 11 12
Wind gust              32 32
Clouds           SC SC B1 B1 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
306 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                      39          32          44          23          39
Temp             16 19 32 38 34 32 36 40 42 42 43 43 36 29 25 25 23 25 32 38 37
Dewpt             6  6 15 19 21 22 28 31 31 32 32 32 33 26 23 23 20 23 29 33 32
RH               64 56 49 46 58 66 72 70 65 67 65 65 89 88 92 92 88 92 88 82 82
Wind dir         SW SW SW  W SW SW SW SW  W  W  W  W NW  W  W  W  S  S SE  S  S
Wind spd          9 11 12 13 14 14 17 23 23 20 21 19 13  8  5  3  5 10  9 11 12
Wind gust                             33 33    32
Clouds           FW FW 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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