Point Forecast Matrices
Issued by NWS Billings, MT

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FOUS55 KBYZ 211001
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Point Forecast Matrices
National Weather Service Billings MT
401 AM MDT Fri Aug 21 2026

MTZ235-212200-
Billings-Yellowstone MT
45.81N 108.53W Elev. 3648 ft
401 AM MDT Fri Aug 21 2026

Date             Fri 08/21/26            Sat 08/22/26            Sun 08/23/26
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                      91          64          91          65          94
Temp             64 69 83 89 89 80 74 70 65 68 79 88 90 79 74 69 66 72 88 93 88
Dewpt            46 46 50 48 48 48 48 49 49 50 51 51 54 53 55 54 54 54 54 52 53
RH               52 44 32 24 24 33 40 47 56 52 38 28 30 41 51 59 65 53 31 25 30
Wind dir          W  W NE NE NE NE NE NE NE NE  E  E SE NW  W  W  W  W  W  W  W
Wind spd          6  5  9 12 13 10 12 11  5  3  4  5  5  3  6  9 10  9  9 12 12
Clouds           SC FW FW FW SC B1 B1 SC B2 B2 B2 B1 B1 B2 B2 B1 SC SC B1 B1 B1
PoP 12hr                      0           0          20          30          30
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                                            C  C              C  C  C
Tstms                                                 S  S                 S  S


Date               Mon 08/24/26  Tue 08/25/26  Wed 08/26/26  Thu 08/27/26
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            63    88      61    85      61    89      61    87
Temp          71   63 81 86 70   62 77 83 69   61 81 87 70   62 81 85
Dewpt         53   50 48 43 46   47 49 46 47   48 50 45 49   49 47 42
PWind dir           W     S      NE    NE       E     S       E     W
Wind char          GN    LT      GN    LT      LT    LT      LT    LT
Avg clouds    B1   SC SC FW SC   B1 B1 FW FW   SC SC FW SC   B1 B1 SC
PoP 12hr           30     5      20    10       5     5      20    10
Rain shwrs     C                  S                      S
Tstms          S

$$
MTZ065-212200-
Livingston-Park MT
45.70N 110.47W Elev. 4656 ft
401 AM MDT Fri Aug 21 2026

Date             Fri 08/21/26            Sat 08/22/26            Sun 08/23/26
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                      94          57          89          55          89
Temp             58 66 84 92 91 76 71 64 59 63 77 85 84 71 66 60 56 65 82 87 83
Dewpt            40 42 43 39 40 44 47 47 46 48 50 52 51 54 56 52 50 51 51 50 47
RH               51 42 24 16 17 32 42 54 62 58 39 32 32 55 70 75 80 60 34 28 28
Wind dir          W  W NW NE NE  E  E SE SE  E  E SE  E SW SW SW SW  W  W  W SW
Wind spd          5  4  4  8 14 17 13  6  3  3  3  4  5  6  8  9  9  9 10 16 14
Wind gust                       28                                        26
Clouds           SC FW FW FW B1 B1 B1 SC OV B2 B1 B1 B2 B2 B2 SC SC SC B1 B1 B1
PoP 12hr                      0          10          50          60          40
QPF 12hr                      0           0        0.09        0.05           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                                      C  C  L  L              C  C  S
Tstms                                           S  C  C  S              S  C  S
Obvis                         K  K


Date               Mon 08/24/26  Tue 08/25/26  Wed 08/26/26  Thu 08/27/26
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            52    86      51    84      51    86      51    85
Temp          64   53 78 83 63   53 75 81 63   51 79 81 62   51 78 82
Dewpt         49   46 44 37 45   46 46 40 47   46 45 40 46   44 42 34
PWind dir          SW     W      SE    SE       E     S      SW     W
Wind char          GN    LT      GN    LT      LT    LT      LT    GN
Avg clouds    B1   SC FW FW B1   B1 SC FW SC   SC SC SC B1   B1 SC SC
PoP 12hr           20    10      30     5      10    10      20     5
Rain shwrs     S             C    S                      S
Tstms          S             S                           S

$$
MTZ032-212200-
Miles City-Custer MT
46.42N 105.90W Elev. 2628 ft
401 AM MDT Fri Aug 21 2026

Date             Fri 08/21/26            Sat 08/22/26            Sun 08/23/26
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                      91          62          91          67          96
Temp             62 69 82 89 88 76 71 65 62 69 82 89 90 81 77 71 68 74 88 95 94
Dewpt            48 49 51 51 50 51 52 50 50 51 55 53 54 55 59 59 59 61 63 58 55
RH               60 49 34 27 27 42 51 58 65 53 40 29 30 41 54 66 73 64 43 29 27
Wind dir         NE NE NE NE NE NE NE NE  E SE SE SE SE SE SE SE SE  S  W NW NW
Wind spd          6  9 12 12 13 13 12  9  9 13 17 17 17 17 16 11  9  5  4  5  6
Clouds           SC SC FW FW FW SC B1 SC B1 B1 B1 B2 B2 B2 B2 B1 B1 SC FW SC B1
PoP 12hr                      0           0           0          40          10
QPF 12hr                      0           0           0           0           0
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                                            C  C  C  C              C
Tstms                                                 S  S                    S


Date               Mon 08/24/26  Tue 08/25/26  Wed 08/26/26  Thu 08/27/26
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            65    89      59    83      57    87      60    88
Temp          73   65 83 86 68   60 77 82 65   57 79 85 68   60 81 85
Dewpt         59   54 47 42 47   48 48 45 47   48 50 47 50   50 52 45
PWind dir           W    NW       N     N      NE     E       E     E
Wind char          LT    GN      LT    LT      LT    LT      GN    GN
Avg clouds    B1   SC FW FW FW   SC SC FW FW   FW SC FW SC   B1 SC FW
PoP 12hr           30     0       5     5       0     0      10    10
Rain shwrs     C
Tstms          S

$$
MTZ033-212200-
Baker-Fallon MT
46.38N 104.24W Elev. 2969 ft
401 AM MDT Fri Aug 21 2026

Date             Fri 08/21/26            Sat 08/22/26            Sun 08/23/26
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                      90          55          88          61          93
Temp             58 69 84 88 87 73 66 60 56 67 82 86 85 75 71 66 62 71 86 92 89
Dewpt            44 44 46 47 47 49 49 48 47 47 49 49 50 51 53 54 55 58 62 61 59
RH               59 40 27 24 25 43 54 64 72 49 32 28 30 43 53 65 78 63 45 36 37
Wind dir         SE SE  E  E NE NE  E  E  E SE SE SE SE SE SE SE SE SE  S SW NE
Wind spd          9 11 13 10 13 13 11  9 10 16 18 18 19 19 19 17 14 14 11  9 10
Wind gust                                         29 29 29 29
Clouds           FW FW FW FW SC SC SC FW SC SC B1 B1 B2 B2 B2 B1 B1 B1 FW SC SC
PoP 12hr                      5           0           0          50          30
QPF 12hr                      0           0           0        0.07        0.01
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                                                  C  C  C  C        S
Tstms                                                                         S


Date               Mon 08/24/26  Tue 08/25/26  Wed 08/26/26  Thu 08/27/26
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            60    90      55    84      50    86      55    87
Temp          70   61 86 86 66   57 79 80 61   54 80 82 65   57 81 83
Dewpt         59   54 49 42 46   46 44 42 46   45 45 43 48   48 50 46
PWind dir          SE    NW      NW    NW      NE    SE       E    SE
Wind char          GN    GN      LT    GN      LT    LT      GN    GN
Avg clouds    SC   SC FW FW FW   SC SC FW FW   FW FW FW SC   SC SC SC
PoP 12hr           20     5       5     0       5     0      10    20
Rain shwrs     S                                                    S
Tstms          S

$$
WYZ199-212200-
Sheridan-Sheridan WY
44.80N 106.96W Elev. 4019 ft
401 AM MDT Fri Aug 21 2026

Date             Fri 08/21/26            Sat 08/22/26            Sun 08/23/26
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                      94          58          92          60          92
Temp             61 70 87 92 92 75 68 62 60 67 83 89 89 74 68 63 61 71 87 90 86
Dewpt            46 45 44 44 44 46 46 48 48 48 53 54 54 55 55 51 50 51 53 55 54
RH               58 41 22 19 19 36 45 60 64 50 36 30 30 51 63 65 67 49 31 31 34
Wind dir         SW NW  N  N  N NW  W  N  N  E SE SE SE  S  S SW SW  N NW NW  W
Wind spd          1  1 10  9  9  3  2  0  0  3  9  8  6  8  4  3  1  0  2  5  5
Clouds           SC SC FW FW SC B1 SC B1 OV B2 B2 SC SC B1 B1 SC SC FW B2 B2 B1
PoP 12hr                      5          10          20          20          60
QPF 12hr                      0           0           0           0        0.02
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                                         S  S  S              L  L  C
Tstms                                              S  S  S              S  C  S


Date               Mon 08/24/26  Tue 08/25/26  Wed 08/26/26  Thu 08/27/26
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            57    86      55    83      53    88      55    87
Temp          65   58 81 83 63   56 77 81 61   53 81 84 63   55 82 83
Dewpt         53   48 48 46 49   48 48 47 49   48 46 45 48   46 43 41
PWind dir          SW    NW       W    NE      SW     E       S    NW
Wind char          LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    B1   SC SC B1 B1   SC SC B1 SC   SC SC FW SC   SC SC SC
PoP 12hr           30    30      20    30      10    10      10    10
Rain shwrs     C          C  S          C
Tstms          S             S          S

$$