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Issued by NWS Great Falls, MT

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Point Forecast Matrices
National Weather Service Great Falls MT
227 AM MST Wed Dec 13 2017

MTZ012-132300-
Great Falls-Cascade MT
47.47N 111.38W Elev. 3663 ft
227 AM MST Wed Dec 13 2017

Date                Wed 12/13/17            Thu 12/14/17            Fri 12/15/17
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                      43          27          43          33          49
Temp             29 31 39 43 38 34 31 32 30 27 36 43 37 33 34 34 37 39 48 48 43
Dewpt            11 13 19 25 26 24 21 22 21 21 21 20 22 21 21 20 21 18 20 19 21
RH               46 47 44 49 62 66 66 66 69 78 54 39 54 61 58 56 52 42 33 31 41
Wind dir         SW SW  W  W SW SW  W  W  W SW SW SW SW SW SW SW SW SW SW SW SW
Wind spd          8  6  8  9 10 10  9  9 11 11 13 16 16 17 16 18 19 23 24 24 17
Clouds           B1 B2 B2 OV SC SC FW SC SC FW FW FW SC B1 SC SC SC B1 B2 B2 OV
PoP 12hr                     10           0           0           0           5
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain                                                                          C


Date               Sat 12/16/17  Sun 12/17/17  Mon 12/18/17  Tue 12/19/17
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    39      27    45      32    45      30    44
Temp          34   27 37 36 28   30 41 45 41   32 44 40 33   31 43 43
Dewpt         27   21 22 18 16   20 20 24 27   22 28 20 21   23 27 26
PWind dir           W     W      SW    SW      SW    SW      SW    SW
Wind char          GN    BZ      GN    BZ      BZ    BZ      GN    GN
Avg clouds    OV   B2 B2 B1 SC   SC SC B1 B1   B1 B1 B1 B2   B2 B2 B2
PoP 12hr           40    30       5    10      10    10      20    30
Rain           C                                         S          C
Snow           C    C  C                                 S    S  C  C

$$
MTZ010-132300-
Cut Bank-Glacier MT
48.60N 112.39W Elev. 3838 ft
227 AM MST Wed Dec 13 2017

Date                Wed 12/13/17            Thu 12/14/17            Fri 12/15/17
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                      46          24          43          30          46
Temp             20 22 36 46 38 33 32 30 27 24 35 43 32 31 34 36 37 39 44 45 37
Dewpt            10 12 18 21 23 21 21 21 20 19 22 23 20 21 20 22 21 19 21 22 25
RH               64 65 47 37 54 61 63 69 74 81 59 45 61 66 56 56 52 44 39 40 61
Wind dir          W  W  W  W  W NW  W  W  W  W  W  W  W  W  W  W  W  W  W  W NW
Wind spd          9  8 11 14 12 12 11 10 12 11 12 14 14 16 18 20 24 24 24 25 16
Wind gust                                                        35 34 35 36
Clouds           B1 B2 B2 SC SC FW CL CL CL FW FW SC SC B1 SC SC B1 B1 B2 B2 B2
PoP 12hr                      5           0           0           0          20
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain                                                                    S  S
Snow                                                                       S  C


Date               Sat 12/16/17  Sun 12/17/17  Mon 12/18/17  Tue 12/19/17
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    37      26    43      28    40      25    40
Temp          31   25 37 30 26   30 42 40 37   28 40 33 29   26 40 31
Dewpt         25   20 21 19 17   21 24 24 26   22 28 19 23   20 28 23
PWind dir          NW     W       W     W       W     W       W    SW
Wind char          BZ    BZ      BZ    BZ      BZ    BZ      GN    GN
Avg clouds    B2   B2 B1 B1 SC   SC B1 B1 B1   B1 B1 B1 B1   B2 B2 B2
PoP 12hr           50    20       5    10      10    10      20    30
Snow           C    C  S                                      S  C  C

$$
MTZ014-132300-
Helena-Lewis & Clark MT
46.61N 111.96W Elev. 3893 ft
227 AM MST Wed Dec 13 2017

Date                Wed 12/13/17            Thu 12/14/17            Fri 12/15/17
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          17          35          19          40
Temp             21 22 29 33 29 26 23 23 21 17 27 35 30 23 21 19 19 21 34 40 37
Dewpt            16 20 27 21 20 22 19 19 18 15 20 20 20 19 16 15 15 16 23 23 23
RH               81 92 92 61 69 85 84 84 88 92 74 54 66 84 81 84 84 81 64 50 56
Wind dir          W  W  W  W  W  W  W  W  W  W  S SE  S SW SW SW SW SW SW SW SW
Wind spd          3  2  2  3  3  3  3  4  3  3  3  5  3  4  3  4  4  5  4  6  8
Clouds           B2 B2 B2 B2 B2 B1 B1 SC SC SC SC SC B1 B1 B1 SC SC B1 B1 B1 B2
PoP 12hr                     70           5           0           0           5
QPF 12hr                   0.06           0           0           0           0
Snow 12hr                     1       00-00       00-00
Rain                                                                          S
Snow              S  C  L  L


Date               Sat 12/16/17  Sun 12/17/17  Mon 12/18/17  Tue 12/19/17
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            23    36      20    38      25    40      25    38
Temp          29   24 35 33 22   22 32 38 32   25 38 38 30   25 35 38
Dewpt         22   19 23 18 16   17 20 22 25   21 27 22 23   21 24 25
PWind dir           W     W      SW    SW      SW    SW      SW     S
Wind char          GN    GN      LT    LT      LT    LT      LT    LT
Avg clouds    B2   B2 B2 B2 B1   SC SC B1 B1   B1 B1 B1 B1   B1 B2 B2
PoP 12hr           30    20      10    10      10    10      20    30
Rain           S                                         S       C  C
Snow           S    C  S                                 S    S  C  C

$$
MTZ055-132300-
Bozeman-Gallatin MT
45.78N 111.16W Elev. 4475 ft
227 AM MST Wed Dec 13 2017

Date                Wed 12/13/17            Thu 12/14/17            Fri 12/15/17
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                      29          14          33          13          36
Temp             17 16 23 29 24 19 19 17 15 14 25 33 29 19 17 15 14 15 29 36 32
Dewpt            11 13 15 24 23 18 17 17 15 13 20 19 18 11 10  8 10  9 17 21 18
RH               77 88 71 81 96 96 92100100 96 81 56 63 70 73 73 84 77 60 54 56
Wind dir          S  S  W  W NW  W  S  S SW  S SW  W  S  S  S  S  S  S SW SW SW
Wind spd          3  2  1  2  2  3  3  3  3  2  2  3  2  4  4  5  4  5  5  6  8
Clouds           SC B2 OV OV B2 B2 B1 B1 B1 SC FW FW SC SC SC SC SC SC B1 B1 B2
PoP 12hr                     70          40           5           0           5
QPF 12hr                   0.07        0.01           0           0           0
Snow 12hr                     1           T       00-00
Snow              S  C  L  L  C  C  C  S                                      C
Obvis                         F  F     F  F  F


Date               Sat 12/16/17  Sun 12/17/17  Mon 12/18/17  Tue 12/19/17
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            20    33      14    32      19    36      19    36
Temp          24   20 31 30 17   15 26 32 23   20 32 35 24   20 33 35
Dewpt         18   16 20 17  9   11 14 19 15   15 20 21 17   15 21 23
PWind dir          SW     W      SW    SW      SW    SW      SW    SW
Wind char          LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    B2   B2 B2 B2 B1   SC SC B1 B1   B1 B1 B1 B2   B2 B2 B2
PoP 12hr           40    30      10    10      10    20      20    30
Rain                                                     S          C
Snow           C    C  C  S                        S     S    S  C  C

$$
MTZ055-132300-
West Yellowstone-Gallatin MT
44.66N 111.11W Elev. 6700 ft
227 AM MST Wed Dec 13 2017

Date                Wed 12/13/17            Thu 12/14/17            Fri 12/15/17
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           7          29           6          26
Temp              9 11 18 25 23 17 15 11  8  8 20 29 25 14 10  6  6  9 19 26 23
Dewpt             2 10 12 20 21 14 13 10  7  7 16 16 17 10  7  4  3  8 15 18 18
RH               72 96 77 81 92 88 92 96 96 96 84 58 71 84 87 91 87 96 84 71 81
Wind dir         SE  S SW SW NW  N  E SE  N  N NE  W SW  S  S  S  S  S  S  S  S
Wind spd          2  2  1  2  2  2  4  2  3  3  2  3  3  3  3  3  3  4  5  8  5
Clouds           SC B1 B2 B2 B2 B1 SC SC SC SC FW FW SC SC B1 B1 B1 B1 B1 B1 B2
PoP 12hr                     70          10           0           0           5
QPF 12hr                   0.07           0           0           0           0
Snow 12hr                     1       00-00       00-00
Snow              S  C  L  L                                                  C
Obvis                F                 F  F  F
Wind chill                                                    -3 -1
Min chill                                                        -3    -2


Date               Sat 12/16/17  Sun 12/17/17  Mon 12/18/17  Tue 12/19/17
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            13    25       6    22      10    26      13    29
Temp          20   13 23 22  8    8 16 22 11   13 20 26 18   13 23 28
Dewpt         18   11 16 13  6    6  9 14  9   12 15 19 17   11 18 19
PWind dir          SW     W      SW    SW      SW    SW      SW    SW
Wind char          LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    B2   B2 B2 B2 B2   SC B1 B1 B2   B2 B2 B2 B2   B2 B2 B2
PoP 12hr           40    30      20    10      20    10      20    20
Snow           C    C  C  S  S             S    S        S    S  S  S

$$
MTZ008-132300-
Dillon-Beaverhead MT
45.26N 112.55W Elev. 5357 ft
227 AM MST Wed Dec 13 2017

Date                Wed 12/13/17            Thu 12/14/17            Fri 12/15/17
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          15          35          17          37
Temp             22 23 30 35 30 27 22 20 19 15 26 35 29 24 21 18 19 18 30 37 31
Dewpt             8 13 21 29 28 25 19 18 18 14 20 18 19 15 12 11 12 11 15 21 18
RH               54 65 69 78 92 92 88 92 96 96 78 49 66 68 68 73 74 73 53 52 58
Wind dir          S  S SW NW  N NE  S  S  S  S  S SW  S  S  S  S  S  S  S  S  S
Wind spd          8  5  4  3  4  5  4  5  6  6  6  3  5  8  8  9 10 11 11 11 10
Clouds           B1 B2 B2 B2 B2 B1 SC SC FW FW FW SC SC SC B1 SC SC SC B1 B1 B2
PoP 12hr                     70          10           0           0           0
QPF 12hr                   0.07           0           0           0           0
Snow 12hr                     1       00-00       00-00
Snow              C  C  L  L                                                  C


Date               Sat 12/16/17  Sun 12/17/17  Mon 12/18/17  Tue 12/19/17
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            20    33      14    33      20    36      20    36
Temp          25   20 33 26 15   17 28 33 24   21 33 35 25   21 34 34
Dewpt         18   14 17 10  7   11 13 18 15   14 18 20 17   15 22 17
PWind dir          SW     W      SW     S       S     S       S     S
Wind char          GN    GN      LT    GN      GN    GN      GN    GN
Avg clouds    B2   B2 B1 B1 B1   SC SC B1 B1   B1 B1 B1 B1   B1 B2 B1
PoP 12hr           30    20      10    10      10    10      10    20
Snow           C    S  S  S                                      S  S

$$
MTZ011-132300-
Havre-Hill MT
48.54N 109.76W Elev. 2585 ft
227 AM MST Wed Dec 13 2017

Date                Wed 12/13/17            Thu 12/14/17            Fri 12/15/17
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                      47          24          42          25          49
Temp             27 28 39 47 38 33 29 27 26 24 34 42 31 25 25 25 25 28 42 49 39
Dewpt            15 17 20 23 25 23 24 24 22 21 27 28 23 19 19 19 17 18 22 25 25
RH               60 63 46 38 59 66 81 88 85 88 75 57 72 78 78 78 71 66 44 39 57
Wind dir          W SW  W  W  W  W  W  W  W  W  W SW SW SW SW SW SW SW  W  W  W
Wind spd         11 11 12 14 10 13 12 11 11 10 10 11  9 10 11 13 14 16 21 20 14
Clouds           FW SC B1 B2 B1 FW SC FW SC SC FW SC SC B1 B1 B1 SC B1 B2 B1 OV
PoP 12hr                      0           0           0           5          20
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain                                                                    S  S  C


Date               Sat 12/16/17  Sun 12/17/17  Mon 12/18/17  Tue 12/19/17
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    40      23    44      27    41      23    41
Temp          30   26 38 37 24   28 42 42 35   27 40 37 24   26 40 37
Dewpt         25   18 27 21 17   19 24 27 29   23 26 25 19   20 27 25
PWind dir           W     W       W    SW       W     W      SW    SW
Wind char          GN    BZ      GN    GN      GN    GN      GN    GN
Avg clouds    OV   B2 B2 B1 SC   SC SC B1 B1   B1 B1 B1 B1   B1 B2 B2
PoP 12hr           50    20      10    10      20    20      20    20
Rain           C                                S
Snow           C    S  S  S                     S  S  S  S    S  S  S

$$
MTZ051-132300-
Lewistown-Fergus MT
47.05N 109.46W Elev. 4144 ft
227 AM MST Wed Dec 13 2017

Date                Wed 12/13/17            Thu 12/14/17            Fri 12/15/17
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                      41          25          40          28          50
Temp             30 30 38 41 37 33 33 32 28 25 33 40 33 28 28 29 32 36 47 50 44
Dewpt            14 17 21 23 24 25 24 23 20 21 23 21 25 11 18 18 19 18 19 23 23
RH               51 58 50 48 59 72 69 69 71 84 66 46 72 48 66 63 58 47 32 34 43
Wind dir          W  W  W NW  W  W  W  W NW  W  W  W SW SW SW SW SW SW  W  W  W
Wind spd          8  6  6 11 11 11 13 14 13 12 10  9  9  9  8 10  9 12 16 19 19
Wind gust                       23 25 26
Clouds           FW B1 B2 B2 B1 B1 SC B1 SC FW FW FW SC SC B1 SC SC SC B1 B1 B2
PoP 12hr                      5           5           5           0           5
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain                                                                          C


Date               Sat 12/16/17  Sun 12/17/17  Mon 12/18/17  Tue 12/19/17
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    34      23    43      29    40      24    41
Temp          30   25 30 33 24   26 41 42 35   29 40 35 25   27 40 35
Dewpt         26   20 21 19 16   18 19 26 27   22 23 24 19   22 28 20
PWind dir          NW     W       W    SW      SW     W       W     W
Wind char          BZ    GN      GN    GN      GN    GN      GN    GN
Avg clouds    B2   B2 B2 B2 B1   SC SC SC B1   B1 B1 B1 B1   B2 B2 B2
PoP 12hr           50    30      10     5      10    20      20    30
Rain           C
Snow           C    C  C  S                           S  S    S  C  C

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



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