Point Forecast Matrices
Issued by NWS Billings, MT

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Point Forecast Matrices
National Weather Service Billings MT
424 PM MDT Sat Aug 15 2026

MTZ235-161000-
Billings-Yellowstone MT
45.81N 108.53W Elev. 3648 ft
424 PM MDT Sat Aug 15 2026

Date           08/15/26      Sun 08/16/26            Mon 08/17/26            Tue
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                      57          84          58          84          60
Temp             75 70 63 59 57 62 74 82 83 72 65 61 59 63 74 80 81 72 66 63 60
Dewpt            56 57 55 54 54 56 56 54 54 54 53 53 52 53 54 53 53 54 53 53 52
RH               52 63 75 83 90 81 53 38 37 53 65 75 78 70 50 39 38 53 63 70 75
Wind dir          E  E  N  W  W SW  W NW NW  W  W SW  W SW SW  W NW SE NW  W  W
Wind spd          9  6  5  3  4  5  6  5  6  5  5  6  6  4  3  5  6  5  6  6  8
Clouds           B1 B1 B1 SC B1 FW FW FW B1 B1 B1 B1 OV B1 SC B1 B2 B2 B2 OV B2
PoP 12hr                     30          10          30           5          50
QPF 12hr                      0           0           0           0        0.03
Snow 12hr                 00-00       00-00       00-00
Rain shwrs        C  C  S  S              C  S                    C  C  C  C  S
Tstms             C  C  S                 S                       S


Date           08/18/26  Wed 08/19/26  Thu 08/20/26  Fri 08/21/26  Sat 08/22/26
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          80      56    84      58    87      60    90      62    91
Temp          71 76 62   57 76 82 65   59 80 85 67   60 80 88 70   62 83 88
Dewpt         54 53 54   52 52 48 50   49 50 46 48   48 50 48 49   50 51 50
PWind dir         W       W     W      SW     W      NE    SW      NE     W
Wind char        LT      LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    B1 B1 B1   B1 SC FW SC   SC SC FW FW   SC SC FW SC   SC B1 SC
PoP 12hr         50      30     5      20     5       5     5      20    10
Rain shwrs     S  C  C             S                           S
Tstms             S  S

$$
MTZ065-161000-
Livingston-Park MT
45.70N 110.47W Elev. 4656 ft
424 PM MDT Sat Aug 15 2026

Date           08/15/26      Sun 08/16/26            Mon 08/17/26            Tue
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          83          47          84          48
Temp             75 63 57 50 45 56 73 79 79 66 59 54 49 58 75 80 79 66 61 54 49
Dewpt            50 53 53 49 45 49 48 45 44 48 48 47 45 46 48 44 45 48 50 48 47
RH               41 70 86 96100 77 41 30 29 52 67 77 86 64 38 28 30 52 67 80 93
Wind dir          S SW  W  W NW  W  W  W  W  W  W  W  W  W  W  W  W SW SW SW  W
Wind spd          5  4  3  4  5  5  6  9  8  6  5  5  5  4  4 10 10  8  5  6  6
Clouds           B2 OV B1 SC FW FW SC SC B2 B2 B1 B1 B2 SC SC B1 B2 B2 B2 B2 B1
PoP 12hr                     70          20          30           5          70
QPF 12hr                   0.01           0        0.05           0        0.05
Snow 12hr                 00-00       00-00       00-00
Rain shwrs        L  C  S  S        S  S  C  C                    L  L  L  L  C
Tstms             C  C              S  S  S                       S
Obvis                     PF PF


Date           08/18/26  Wed 08/19/26  Thu 08/20/26  Fri 08/21/26  Sat 08/22/26
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          80      45    83      47    86      50    89      53    89
Temp          71 74 57   47 74 79 61   50 77 83 63   52 80 86 66   54 81 83
Dewpt         49 46 49   47 46 41 45   44 45 40 44   44 46 43 47   47 47 45
PWind dir         W      SW     W       W     W      SW     W      SW     W
Wind char        LT      LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    B1 B1 B1   B1 SC SC SC   SC FW FW FW   SC SC FW SC   B1 SC B1
PoP 12hr         50      50     5      20     5      10    10      20    30
Rain shwrs     C  C  C             S                           S          C
Tstms             C  S                                         S          C

$$
MTZ032-161000-
Miles City-Custer MT
46.42N 105.90W Elev. 2628 ft
424 PM MDT Sat Aug 15 2026

Date           08/15/26      Sun 08/16/26            Mon 08/17/26            Tue
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                      54          84          57          84          58
Temp             76 66 61 56 54 61 74 81 83 72 64 60 58 64 75 81 82 70 65 61 59
Dewpt            55 53 54 52 51 54 58 58 54 56 56 55 54 55 56 54 53 54 54 53 54
RH               48 63 78 86 90 78 57 46 37 57 75 84 86 73 52 39 37 57 68 75 83
Wind dir          N NE NE  E  E SE  S SW  N  N NW  W  W  W  W NW  N NE  E  N  N
Wind spd          5  4  4  4  3  4  4  4  3  3  3  3  3  3  3  4  5  4  3  3  4
Clouds           SC SC FW SC SC SC FW FW SC SC SC SC B1 SC SC SC B1 B2 B2 B2 B2
PoP 12hr                     20          20          20          10          60
QPF 12hr                      0           0        0.01           0        0.04
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                 S  S           S  S  S  S              C  C  L  L  C
Tstms                      S              S                       S


Date           08/18/26  Wed 08/19/26  Thu 08/20/26  Fri 08/21/26  Sat 08/22/26
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          80      54    84      56    87      58    90      61    92
Temp          71 78 62   54 76 83 65   58 81 85 66   58 82 88 70   61 84 90
Dewpt         57 53 55   54 56 50 53   52 53 47 50   50 52 48 50   51 55 52
PWind dir        NW       E     S      SE     W      NE     E       E    SE
Wind char        LT      LT    LT      LT    LT      LT    LT      GN    GN
Avg clouds    B2 SC SC   SC SC SC FW   SC SC FW FW   FW SC FW FW   SC SC SC
PoP 12hr         40      20    10      10     5       5     0      10    10
Rain shwrs     C  S  S    S
Tstms             S  S

$$
MTZ033-161000-
Baker-Fallon MT
46.38N 104.24W Elev. 2969 ft
424 PM MDT Sat Aug 15 2026

Date           08/15/26      Sun 08/16/26            Mon 08/17/26            Tue
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                      49          83          53          83          54
Temp             73 64 57 53 50 63 76 80 78 66 61 57 54 66 78 80 78 67 62 58 55
Dewpt            55 53 52 51 49 52 54 54 55 56 55 53 51 53 53 51 51 52 52 51 51
RH               53 67 83 93 96 67 46 41 45 70 81 86 90 63 42 36 39 59 70 77 86
Wind dir         NW  N  E  E SE SE  S  S SE  S SW SW  W NW NW NW NW NE  E  S SE
Wind spd         10  5  3  4  4  8  6  5  5  5  4  4  4  6  9 10  9  5  4  3  2
Clouds           B1 SC FW FW SC FW FW SC B1 B1 SC SC B1 SC SC SC SC B1 B2 B2 B2
PoP 12hr                      0          30          30           5          60
QPF 12hr                      0        0.03           0           0        0.01
Snow 12hr                 00-00       00-00       00-00
Rain shwrs                             C  C  C  S  S              S  S  L  L  C
Tstms                                  S  C  C  S                 S
Obvis                     PF


Date           08/18/26  Wed 08/19/26  Thu 08/20/26  Fri 08/21/26  Sat 08/22/26
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      49    82      53    86      54    88      56    91
Temp          73 72 58   52 76 78 62   56 82 82 63   57 83 85 66   59 85 86
Dewpt         55 52 54   51 52 49 52   52 49 45 49   49 48 46 50   50 52 51
PWind dir        NE      SE     S      SE     W      NE     E       E    SE
Wind char        LT      LT    LT      LT    LT      LT    LT      LT    GN
Avg clouds    B2 B1 SC   SC SC SC SC   FW SC SC FW   FW FW FW FW   FW FW FW
PoP 12hr         50      20    10      20    10       5     5       5    10
Rain shwrs     C  C  S                  S
Tstms             S  S

$$
WYZ199-161000-
Sheridan-Sheridan WY
44.80N 106.96W Elev. 4019 ft
424 PM MDT Sat Aug 15 2026

Date           08/15/26      Sun 08/16/26            Mon 08/17/26            Tue
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          80          50          82          53
Temp             73 64 57 54 51 59 74 78 77 65 58 54 52 62 76 80 79 66 60 56 54
Dewpt            56 58 57 54 51 52 54 52 51 53 51 50 49 49 51 50 51 53 52 51 51
RH               55 81100100100 78 50 40 40 65 77 86 89 62 42 35 38 63 75 83 90
Wind dir         SE SW  S NW  N  N  N NW NW SW SW  W  W  N NE  N  W SW SW SW SW
Wind spd          3  3  2  1  0  0  2  2  2  2  2  1  1  0  2  3  3  3  2  2  1
Clouds           SC SC FW FW SC FW FW FW SC B1 B1 SC SC SC SC SC B1 B1 B2 B2 B2
PoP 12hr                     30          20          20          10          50
QPF 12hr                   0.03           0           0           0        0.01
Snow 12hr                 00-00       00-00       00-00
Rain shwrs        C  S              S  S  S  S                    C  C  C  C  C
Tstms             S                 S  S  S                       S
Obvis                   F  F  F


Date           08/18/26  Wed 08/19/26  Thu 08/20/26  Fri 08/21/26  Sat 08/22/26
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      49    81      50    85      52    89      56    91
Temp          73 74 57   50 76 79 59   52 80 83 61   53 83 87 64   57 84 87
Dewpt         52 52 53   49 50 47 50   48 47 46 48   47 47 46 48   48 48 48
PWind dir        NW       W     N      SW     N      SW    NE       S     E
Wind char        LT      LT    LT      LT    LT      LT    LT      LT    LT
Avg clouds    B2 B2 B1   B1 B1 FW SC   SC SC FW FW   SC SC FW FW   SC SC SC
PoP 12hr         60      50    10      10    10       5     5      10    20
Rain shwrs     C  L  C                                                    S
Tstms             C  S                                                    S

$$