Point Forecast Matrices
Issued by NWS Great Falls, MT

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Point Forecast Matrices
National Weather Service Great Falls MT
309 AM MDT Wed May 8 2024

MTZ312-082200-
Great Falls-Cascade MT
47.47N 111.38W Elev. 3663 ft
309 AM MDT Wed May 8 2024

Date             Wed 05/08/24            Thu 05/09/24            Fri 05/10/24
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                      44          38          57          35          64
Temp             31 35 36 38 41 40 40 40 40 44 49 54 55 48 41 39 37 46 57 62 63
Dewpt            29 34 35 36 38 37 38 38 38 41 41 43 43 42 36 34 31 39 43 41 41
RH               92 96 96 92 89 89 92 92 92 89 74 66 64 80 82 82 79 76 59 46 44
Wind dir         NW  N  N NW NW NW  W  W  W  W  W  W  S  S  S  S SW SW SW  S  S
Wind spd         29 27 25 24 18 14 10  5  5  5  5  5  6  6  5  5  6  8  8  8  9
Wind gust        48 42 39 36 28
Clouds           OV OV OV B2 OV OV B2 OV OV B2 B1 SC FW FW FW FW FW FW CL FW CL
PoP 12hr                    100          80          30           5           0
QPF 12hr                   0.35        0.12           0           0           0
Snow 12hr                     1       00-00       00-00
Rain                 D  L  L  L  L  L  C  C  C  S  S
Snow              D
Obvis            BS
High Wind
Winter Weath      Y  Y


Date               Sat 05/11/24  Sun 05/12/24  Mon 05/13/24  Tue 05/14/24
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            41    74      46    77      50    76      50    70
Temp          46   43 67 71 53   49 69 74 56   52 70 71 55   53 65 64
Dewpt         38   35 43 43 42   39 43 42 41   38 37 36 36   36 34 34
PWind dir           S    SW      SW    SW      SW    SW      SW     W
Wind char          GN    GN      GN    GN      GN    BZ      GN    BZ
Avg clouds    FW   FW FW FW FW   FW FW FW FW   SC FW SC SC   SC SC SC
PoP 12hr            0     5       5     5       5     5      10    20
Rain shwrs                                                          S

$$
MTZ303-082200-
Cut Bank-Glacier MT
48.60N 112.39W Elev. 3838 ft
309 AM MDT Wed May 8 2024

Date             Wed 05/08/24            Thu 05/09/24            Fri 05/10/24
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                      43          33          60          33          70
Temp             32 34 36 38 43 38 37 36 35 44 53 58 59 49 42 38 35 49 62 68 68
Dewpt            30 32 33 34 36 34 33 32 32 36 37 36 35 37 35 32 29 37 35 35 35
RH               92 92 89 85 76 85 85 85 89 73 54 44 40 63 76 79 78 63 36 29 29
Wind dir          N  N  N NW NW NW NW NW NW NW  N  N NW  W  W  W  W SW  S  S SW
Wind spd         35 31 28 27 24 13  9  8  6  8  8  8  6  5  5  5  5  5  6  9 10
Wind gust        51 50 46 39 34
Clouds           OV OV B2 B2 B2 B1 B1 B1 B1 SC FW FW FW FW FW FW FW FW CL FW FW
PoP 12hr                    100          20           5           0           0
QPF 12hr                   0.20        0.01           0           0           0
Snow 12hr                     1       00-00       00-00
Rain                 D  C  C
Snow              D  D  C
Obvis            BS
High Wind
Winter Weath      Y  Y


Date               Sat 05/11/24  Sun 05/12/24  Mon 05/13/24  Tue 05/14/24
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            44    75      46    75      49    73      46    65
Temp          49   46 70 73 54   48 69 72 56   50 67 69 53   48 60 59
Dewpt         39   34 39 39 40   39 41 39 39   37 36 35 36   34 32 32
PWind dir          SW     W       W     W      SW     W       W     W
Wind char          GN    GN      GN    GN      GN    BZ      BZ    BZ
Avg clouds    FW   FW FW FW FW   FW FW FW SC   SC SC SC SC   SC SC SC
PoP 12hr            0     5      10    10       5     5      10    20
Rain shwrs                                                          S

$$
MTZ319-082200-
Helena-Lewis & Clark MT
46.61N 111.96W Elev. 3893 ft
309 AM MDT Wed May 8 2024

Date             Wed 05/08/24            Thu 05/09/24            Fri 05/10/24
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                      45          40          58          37          69
Temp             37 38 39 41 43 42 42 43 41 44 49 56 57 51 45 41 39 46 57 66 68
Dewpt            30 32 33 33 34 34 36 36 36 38 40 40 39 38 37 34 33 36 41 39 37
RH               75 79 79 73 70 73 79 76 82 79 71 55 51 61 73 76 79 68 55 37 32
Wind dir         NW NW NW NW NW NW  W  W  W NW  N  N  N  N SW  S  S SE  E  E NE
Wind spd         19 21 18 17 12 10  9  8  6  5  5  8  9  5  4  3  3  3  5  5  6
Wind gust           33 28
Clouds           OV OV OV OV OV B2 OV OV OV B2 B1 SC FW FW FW FW FW SC FW FW CL
PoP 12hr                    100          70          20           0           0
QPF 12hr                   0.20        0.02        0.01           0           0
Snow 12hr                     T       00-00       00-00
Rain              D  D  L  L  L  C  C  C  S  S
Snow              D  D


Date               Sat 05/11/24  Sun 05/12/24  Mon 05/13/24  Tue 05/14/24
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            43    77      48    79      50    78      50    72
Temp          51   43 67 75 57   48 70 76 59   50 69 74 58   50 65 68
Dewpt         36   34 41 37 39   37 40 36 38   36 36 34 35   34 34 30
PWind dir           S    SW      SW     W       W     W       W     W
Wind char          LT    GN      GN    GN      GN    GN      GN    GN
Avg clouds    CL   FW FW FW FW   FW FW FW FW   SC FW SC FW   SC SC SC
PoP 12hr            0     0       0     5       5    10       5    20
Rain shwrs                                                          S

$$
MTZ326-082200-
Bozeman-Gallatin MT
45.78N 111.16W Elev. 4475 ft
309 AM MDT Wed May 8 2024

Date             Wed 05/08/24            Thu 05/09/24            Fri 05/10/24
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                      44          33          55          31          65
Temp             35 35 37 40 42 39 38 37 36 40 45 50 53 45 40 36 33 43 54 61 63
Dewpt            32 33 34 37 37 36 35 35 34 38 39 41 40 39 35 33 30 36 40 40 37
RH               89 92 89 89 82 89 89 92 92 92 79 71 61 79 82 89 89 76 59 46 38
Wind dir          W  W NW NW NW NW NW  W SW SW SE  S  S SE SE  E SE SE SE SE SE
Wind spd         16 14 13 13 13 10  8  5  3  3  4  5  8  6  5  5  3  2  2  4  6
Clouds           OV OV OV B2 B2 B2 B2 OV B2 B2 B2 B1 SC SC FW FW FW SC FW FW FW
PoP 12hr                    100          80          40           5           0
QPF 12hr                   0.16        0.03        0.01           0           0
Snow 12hr                     T       00-00       00-00
Rain                    D  L  L  D  L  C  C  C  S  S
Snow              D  D


Date               Sat 05/11/24  Sun 05/12/24  Mon 05/13/24  Tue 05/14/24
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            37    73      42    76      44    75      43    72
Temp          44   37 64 71 51   43 67 73 53   45 67 71 54   45 63 66
Dewpt         34   31 39 38 38   36 40 39 40   38 39 37 37   36 36 34
PWind dir          SE    SW      SE    SW       S    SW      SW     W
Wind char          LT    LT      LT    LT      LT    GN      GN    GN
Avg clouds    FW   FW FW FW FW   FW FW FW SC   SC FW SC SC   SC SC B1
PoP 12hr            0     0       0    10      10    20      10    20
Rain shwrs                                            S             S

$$
MTZ330-082200-
West Yellowstone-Gallatin MT
44.69N 111.11W Elev. 6644 ft
309 AM MDT Wed May 8 2024

Date             Wed 05/08/24            Thu 05/09/24            Fri 05/10/24
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                      45          30          53          25          61
Temp             29 34 40 44 43 36 33 32 32 41 49 53 51 41 34 30 27 38 54 60 60
Dewpt            23 23 25 26 26 28 29 28 29 31 30 30 29 31 30 28 25 28 28 26 26
RH               78 64 55 49 51 72 85 85 88 67 48 41 42 67 85 92 92 67 36 27 27
Wind dir         SW NW  N  N  N  N  N  N  N NE NE NE NE NE NE NE NE NE  E  N NW
Wind spd         10 12 11 12 13 13 10  8  6 10 11 10 10 10  4  3  2  3  4  4  8
Clouds           OV OV OV OV B1 B1 B1 B1 B1 B1 B1 SC SC FW FW FW FW SC CL CL CL
PoP 12hr                     80          40          20           0           0
QPF 12hr                   0.02        0.01           0           0           0
Snow 12hr                     T       00-00       00-00
Rain                       L  C  C           S  S  S
Snow              D  L  L  L  C  C  S     S  S
Winter Storm      W  W  W  W  W  W


Date               Sat 05/11/24  Sun 05/12/24  Mon 05/13/24  Tue 05/14/24
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            29    66      33    67      36    66      35    64
Temp          38   30 59 63 41   34 62 63 45   37 61 61 44   36 59 59
Dewpt         31   27 30 29 33   29 33 32 36   33 32 30 35   32 31 30
PWind dir          NE    SW       E    SW       S    SW      SW    SW
Wind char          LT    LT      LT    LT      LT    GN      GN    GN
Avg clouds    CL   FW FW CL FW   FW FW SC SC   SC FW B1 SC   SC SC B1
PoP 12hr            0     0       0    10      20    30      20    30
Rain shwrs                                 S          C  S          C

$$
MTZ328-082200-
Dillon-Beaverhead MT
45.26N 112.55W Elev. 5357 ft
309 AM MDT Wed May 8 2024

Date             Wed 05/08/24            Thu 05/09/24            Fri 05/10/24
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                      47          36          57          34          66
Temp             33 36 41 44 45 40 39 38 37 41 48 54 55 47 40 38 35 43 55 63 65
Dewpt            25 30 32 32 34 34 35 35 35 37 37 35 34 35 35 34 32 35 36 31 28
RH               72 79 70 62 65 79 85 89 92 85 65 48 45 63 82 85 89 73 49 30 25
Wind dir          W  N  N  N  N NE  N NE  E NE NE NE NE NE  E SE SE  S  N NE NE
Wind spd         12 14 18 18 19 13 10  8  6  6 10 12 12  9  5  5  5  4  4  5  6
Wind gust                    29
Clouds           OV OV OV B2 OV B2 OV OV B2 B2 B1 SC SC FW FW FW FW SC FW CL CL
PoP 12hr                     90          50          10           0           0
QPF 12hr                   0.08        0.02           0           0           0
Snow 12hr                     T       00-00       00-00
Rain                    L  L  C  C  C  C
Snow              D  D


Date               Sat 05/11/24  Sun 05/12/24  Mon 05/13/24  Tue 05/14/24
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            38    73      43    75      45    75      43    72
Temp          47   38 64 71 52   44 68 70 53   45 68 71 53   45 64 66
Dewpt         33   30 34 30 36   34 34 32 38   36 34 29 34   34 30 26
PWind dir          SE    SW       W    SW       W    SW       W     W
Wind char          LT    LT      GN    GN      GN    GN      GN    GN
Avg clouds    CL   FW FW FW FW   FW FW FW SC   SC FW FW SC   SC SC SC
PoP 12hr            0     0       0     5       5    10       5    10

$$
MTZ305-082200-
Havre-Hill MT
48.54N 109.76W Elev. 2585 ft
309 AM MDT Wed May 8 2024

Date             Wed 05/08/24            Thu 05/09/24            Fri 05/10/24
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          41          65          38          71
Temp             43 48 52 55 56 50 47 45 43 49 58 62 63 53 46 43 40 51 62 68 68
Dewpt            42 46 46 49 49 47 45 43 42 44 44 41 41 42 41 39 38 42 42 41 41
RH               96 93 80 80 77 89 93 93 96 83 59 46 44 66 83 86 92 71 48 37 37
Wind dir          N  N  N  N  N NW NW  W  W  W NW NW NW  W SW SW SW SW  W  W SW
Wind spd         13 18 18 16 13 10 10  6  6  8  9 10 10  6  6  6  8 10 10  9 10
Clouds           OV B2 B2 B2 B2 B2 B2 B1 B2 B1 SC SC FW FW FW FW FW FW FW FW FW
PoP 12hr                     80          50          20           0           0
QPF 12hr                   0.09        0.03           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain              L  L  L  D  C  C              S  S
High Wind


Date               Sat 05/11/24  Sun 05/12/24  Mon 05/13/24  Tue 05/14/24
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            44    79      46    78      51    77      48    70
Temp          51   45 69 75 56   48 69 74 58   52 71 72 56   49 63 63
Dewpt         42   38 45 43 45   43 46 45 44   42 43 41 41   41 40 38
PWind dir          SW    SW       S    SW      SW     W       W     W
Wind char          GN    GN      GN    GN      GN    BZ      GN    BZ
Avg clouds    FW   FW FW FW FW   SC FW FW SC   SC SC SC SC   SC SC B1
PoP 12hr            0    10      20    10      10    10      20    30
Rain shwrs                        S                      S    S  S  C

$$
MTZ314-082200-
Lewistown-Fergus MT
47.05N 109.46W Elev. 4144 ft
309 AM MDT Wed May 8 2024

Date             Wed 05/08/24            Thu 05/09/24            Fri 05/10/24
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                      41          34          50          32          59
Temp             30 33 37 39 39 37 37 36 36 38 42 46 48 42 38 35 35 45 54 58 58
Dewpt            30 33 36 38 38 37 36 36 36 37 40 41 41 39 36 33 32 39 40 39 40
RH              100100 96 96 96100 96100100 96 93 83 77 89 92 92 89 79 59 49 51
Wind dir         NW NW NW NW NW  W NW  W  W  W  W  W  W SW  S  S  S SW  W  W SW
Wind spd         18 13 12 12 10  9  9  6  6  8  6  6  6  6  6  6  5  5  5  5  5
Clouds           OV OV OV OV OV OV OV OV OV OV B2 B2 SC SC FW FW FW FW FW FW FW
PoP 12hr                    100          90          60          10           0
QPF 12hr                   0.51        0.14        0.02           0           0
Snow 12hr                     1       00-00       00-00
Rain                 D  D  D     L  L  C  C  C  L  L
Rain shwrs                    D
Snow              D
Tstms                         S
Obvis            BS
High Wind
Winter Weath      Y  Y


Date               Sat 05/11/24  Sun 05/12/24  Mon 05/13/24  Tue 05/14/24
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            38    70      44    72      47    72      46    67
Temp          42   40 66 68 49   46 68 69 53   50 68 69 53   48 62 61
Dewpt         35   33 41 42 39   37 43 44 41   37 39 40 38   35 35 35
PWind dir           S     W      SW     W      SW     W       W     W
Wind char          LT    GN      GN    GN      GN    BZ      GN    BZ
Avg clouds    FW   FW FW FW FW   FW FW SC FW   SC FW SC SC   SC SC B1
PoP 12hr            0     5      10    20      10    20      20    30
Rain shwrs                              S             S  S          C
Tstms                                   S             S             S

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