Point Forecast Matrices
Issued by NWS Billings, MT

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Point Forecast Matrices
National Weather Service Billings MT
1251 AM MDT Mon Sep 21 2026

MTZ235-221000-
Billings-Yellowstone MT
45.81N 108.53W Elev. 3648 ft
1251 AM MDT Mon Sep 21 2026

Date           09/20/26      Mon 09/21/26            Tue 09/22/26            Wed
MDT 3hrly     15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06
UTC 3hrly     21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12

Min/Max                      48          71          47          77          53
Temp                      52 50 52 61 70 69 60 54 51 49 53 68 76 74 64 60 56 54
Dewpt                     50 48 51 53 49 52 50 48 47 46 47 49 46 50 48 49 47 46
RH                        93 93 96 75 47 55 69 80 86 89 80 51 34 43 56 67 72 74
Wind dir                   N SE  S  S  E  E  E NE  N SW SW  S  E  E  E  W SW  W
Wind spd                   3  3  4  4  6 10  5  5  4  3  4  4  5  5  4  4  6  9
Clouds                    B2 B2 B2 SC CL CL FW FW FW B1 SC SC FW B2 B2 B2 B2 B2
PoP 12hr                      5           5           0           0          30
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                                                              C  C
Obvis                      F PF


Date           09/23/26  Thu 09/24/26  Fri 09/25/26  Sat 09/26/26  Sun 09/27/26
MDT 6hrly     12 18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     18 00 06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Max/Min          79      52    81      53    83      53    71      46    68
Temp          73 76 60   53 74 79 62   55 76 79 62   54 65 68 55   47 61 66
Dewpt         52 51 46   43 49 49 44   43 48 50 45   42 43 43 41   40 43 45
PWind dir         W       S     S      SE    SW       W     E      NE     E
Wind char        GN      LT    LT      LT    LT      GN    GN      GN    LT
Avg clouds    B1 FW FW   FW FW CL CL   FW FW FW SC   SC SC SC SC   B1 B1 SC
PoP 12hr         10       0     0       0     0      20    10      10    20
Rain shwrs                                       S                        S

$$
MTZ065-221000-
Livingston-Park MT
45.70N 110.47W Elev. 4656 ft
1251 AM MDT Mon Sep 21 2026

Date           09/20/26      Mon 09/21/26            Tue 09/22/26            Wed
MDT 3hrly     15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06
UTC 3hrly     21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12

Min/Max                      41          73          42          77          46
Temp                      48 43 49 65 73 71 59 53 49 45 52 70 76 73 62 58 52 47
Dewpt                     45 41 42 44 41 43 44 44 42 40 41 41 38 41 40 42 41 39
RH                        89 93 77 46 31 36 57 71 77 82 66 35 25 31 44 55 66 74
Wind dir                  SW  W  W SW  E  E  E SE NW  W  W  W  W  W SW SW  W  W
Wind spd                   3  3  4  5  9 11 10  4  3  5  5  4  4  4  5  5  8  8
Clouds                    SC SC SC CL FW CL FW FW FW B1 SC B1 B2 B2 B2 B2 B1 SC
PoP 12hr                      0           0           0           0          20
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                                                        S  S  S  S
Obvis                     PF PF


Date           09/23/26  Thu 09/24/26  Fri 09/25/26  Sat 09/26/26  Sun 09/27/26
MDT 6hrly     12 18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     18 00 06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Max/Min          78      46    81      48    81      45    69      39    68
Temp          72 75 58   47 73 77 60   53 75 76 58   47 63 65 51   40 61 65
Dewpt         44 41 40   37 41 41 40   38 40 40 41   40 40 38 39   38 39 39
PWind dir         W      SW    SW       S    SW       W     W       E    SW
Wind char        GN      LT    LT      GN    GN      GN    GN      GN    LT
Avg clouds    SC FW FW   FW FW FW FW   FW FW FW SC   SC SC SC SC   SC SC SC
PoP 12hr          5       0     0       0     5      20    10      20    20
Rain shwrs                                       S             S    S  S  S

$$
MTZ032-221000-
Miles City-Custer MT
46.42N 105.90W Elev. 2628 ft
1251 AM MDT Mon Sep 21 2026

Date           09/20/26      Mon 09/21/26            Tue 09/22/26            Wed
MDT 3hrly     15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06
UTC 3hrly     21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12

Min/Max                      50          68          47          76          51
Temp                      52 52 54 63 66 66 58 54 52 50 55 68 74 74 64 59 55 52
Dewpt                     52 52 53 52 50 53 54 52 52 50 52 55 53 55 56 55 54 52
RH                       100100 96 67 56 63 86 93100100 90 63 48 51 75 87 96100
Wind dir                   E  E SE SE SE SE SE SE SE SE SE SE SE SE SE SE  E  E
Wind spd                   5  5  8 10 10 11 13 12 10 10 12 11 10 10 13  9  5  4
Wind gust                                   24
Clouds                    B2 B2 SC SC SC SC FW FW FW SC SC FW FW FW SC SC B1 B2
PoP 12hr                      5          20           0           0          20
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                             S                                S  S  C
Tstms                                                                      S  S
Obvis                     PF PF


Date           09/23/26  Thu 09/24/26  Fri 09/25/26  Sat 09/26/26  Sun 09/27/26
MDT 6hrly     12 18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     18 00 06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Max/Min          78      50    84      55    84      53    73      47    71
Temp          68 77 59   51 76 80 64   57 77 80 63   55 68 69 55   48 64 68
Dewpt         55 56 52   48 51 48 50   51 53 53 51   46 43 41 41   41 42 44
PWind dir         S      SE    SE      SE    SE      NE    NW      NE     E
Wind char        LT      LT    LT      GN    GN      GN    GN      GN    GN
Avg clouds    B2 SC FW   FW FW CL FW   SC SC FW FW   SC SC FW FW   SC SC SC
PoP 12hr         50       0     0       0     0       5     5      10    10
Rain shwrs     C
Tstms          S

$$
MTZ033-221000-
Baker-Fallon MT
46.38N 104.24W Elev. 2969 ft
1251 AM MDT Mon Sep 21 2026

Date           09/20/26      Mon 09/21/26            Tue 09/22/26            Wed
MDT 3hrly     15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06
UTC 3hrly     21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12

Min/Max                      44          66          43          71          48
Temp                      50 49 52 61 64 61 52 50 49 48 52 65 71 66 57 55 53 50
Dewpt                     50 49 50 50 47 50 49 50 49 48 49 53 54 53 54 54 53 50
RH                       100100 93 67 54 67 89100100100 89 65 55 63 90 96100100
Wind dir                   E  E SE SE SE SE SE SE SE SE SE SE SE SE SE SE SE SE
Wind spd                   9  8 10 13 14 16 16 16 16 17 19 21 21 20 20 16 13 10
Wind gust                                      26 27    31 33 34 33
Clouds                    B2 B2 B1 SC B1 SC SC SC B2 B2 B1 SC B1 OV B1 B1 B2 B2
PoP 12hr                     20          20           0           0          40
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                             S                                C  C  L
Tstms                                                                      S  C
Obvis                     PF PF


Date           09/23/26  Thu 09/24/26  Fri 09/25/26  Sat 09/26/26  Sun 09/27/26
MDT 6hrly     12 18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     18 00 06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Max/Min          78      48    83      51    83      51    76      44    71
Temp          71 72 56   49 78 77 59   54 76 76 61   54 70 69 53   46 65 65
Dewpt         58 55 52   46 50 47 52   53 55 52 53   48 44 40 41   41 40 41
PWind dir         S       S    SE      SE    SE      SE    NW      NE    SE
Wind char        GN      LT    LT      GN    BZ      BZ    GN      GN    GN
Avg clouds    B2 B1 FW   FW FW FW FW   SC SC FW FW   SC SC FW FW   SC SC SC
PoP 12hr         60       5     0       0     5       5     5      20    20
Rain shwrs     L  C                                                 S     S
Tstms          C  S

$$
WYZ199-221000-
Sheridan-Sheridan WY
44.80N 106.96W Elev. 4019 ft
1251 AM MDT Mon Sep 21 2026

Date           09/20/26      Mon 09/21/26            Tue 09/22/26            Wed
MDT 3hrly     15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06
UTC 3hrly     21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12

Min/Max                      41          68          40          76          47
Temp                      47 45 50 63 67 65 54 49 43 41 50 70 76 73 60 54 50 48
Dewpt                     47 45 49 49 47 49 48 47 42 40 42 45 44 47 47 45 43 44
RH                       100100 96 60 49 56 80 93 96 96 74 41 32 40 62 71 77 86
Wind dir                   W  N  S  E  E  E SE SE SW  N  E  E  E  E  S SW SW  W
Wind spd                   2  2  2  5  6  6  5  4  3  0  1  2  3  2  3  2  2  2
Clouds                    B2 B2 SC FW FW FW FW FW FW SC SC FW FW SC SC B1 B1 B1
PoP 12hr                     20          20           0           0          20
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                             S                          S  S  S  S  C
Tstms                                                                S
Obvis                      F  F                PF PF PF


Date           09/23/26  Thu 09/24/26  Fri 09/25/26  Sat 09/26/26  Sun 09/27/26
MDT 6hrly     12 18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18
UTC 6hrly     18 00 06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00

Max/Min          76      44    81      48    83      48    75      42    72
Temp          73 73 52   45 77 78 57   49 79 79 57   49 72 71 51   42 66 68
Dewpt         48 47 45   39 44 43 42   40 42 43 41   41 42 41 41   41 43 43
PWind dir        NW      SW    SE       S    SW       W    NE      NW     S
Wind char        LT      LT    LT      GN    LT      LT    LT      LT    LT
Avg clouds    B1 SC FW   FW FW FW FW   SC SC FW FW   FW SC FW SC   SC SC SC
PoP 12hr         30       0     0       0     0       5    10      10    20
Rain shwrs     C  S                                                    S  S

$$