378
FOUS55 KBYZ 211026
PFMBYZ
POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE BILLINGS MT
425 AM MDT THU MAY 21 2026
MTZ235-212200-
BILLINGS-YELLOWSTONE MT
45.81N 108.53W ELEV. 3648 FT
425 AM MDT THU MAY 21 2026
DATE THU 05/21/26 FRI 05/22/26 SAT 05/23/26
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 57 39 68 44 78
TEMP 43 44 49 54 55 51 45 41 39 49 62 66 67 59 51 46 45 56 70 76 78
DEWPT 42 42 39 37 35 38 36 35 33 34 36 32 30 35 34 34 35 36 37 37 36
RH 96 93 68 52 47 61 70 79 79 56 38 28 25 40 52 63 68 47 30 24 22
WIND DIR N N N N N W W W W W W SW S SE S SW SW SW SW SW SW
WIND SPD 11 13 10 8 8 5 5 8 10 10 5 4 4 5 4 4 6 10 8 6 6
CLOUDS OV OV OV B2 B2 B1 SC SC FW FW SC B1 SC SC SC SC SC FW FW FW SC
POP 12HR 90 5 0 0 0
QPF 12HR 0.29 0 0 0 0
SNOW 12HR 00-00 00-00 00-00
RAIN D D
RAIN SHWRS C C
TSTMS S
DATE SUN 05/24/26 MON 05/25/26 TUE 05/26/26 WED 05/27/26
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 51 87 54 90 55 85 54 80
TEMP 59 52 79 85 64 56 82 87 66 58 79 82 63 57 74 78
DEWPT 38 35 38 35 39 39 39 37 39 39 42 39 42 43 44 41
PWIND DIR SW SW SW SW SW N N NW
WIND CHAR LT GN LT GN GN GN GN GN
AVG CLOUDS SC FW FW SC SC SC FW FW SC SC B1 B1 B1 B1 B1 B1
POP 12HR 0 0 5 5 5 10 40 30
RAIN SHWRS C C C C
TSTMS S S
MTZ065-212200-
LIVINGSTON-PARK MT
45.70N 110.47W ELEV. 4656 FT
425 AM MDT THU MAY 21 2026
DATE THU 05/21/26 FRI 05/22/26 SAT 05/23/26
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 53 30 66 39 75
TEMP 36 38 44 50 51 45 38 33 31 45 58 63 65 54 47 42 40 54 68 73 74
DEWPT 35 36 34 34 33 34 31 29 27 28 29 29 29 33 32 31 31 32 34 34 34
RH 96 92 68 54 50 65 76 85 85 51 33 27 26 45 56 65 70 43 28 24 23
WIND DIR NE NE NW W SE S W W W W W W SW S SW SW SW SW W W W
WIND SPD 5 6 6 5 8 4 4 5 6 5 5 6 6 3 4 5 6 5 8 11 10
WIND GUST 21
CLOUDS OV OV B2 B2 B2 SC FW SC SC SC SC B1 B1 SC SC SC SC FW FW SC SC
POP 12HR 90 10 0 0 0
QPF 12HR 0.19 0 0 0 0
SNOW 12HR 00-00 00-00 00-00
RAIN D D
RAIN SHWRS C C
TSTMS S S
DATE SUN 05/24/26 MON 05/25/26 TUE 05/26/26 WED 05/27/26
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 46 82 48 83 49 78 46 73
TEMP 55 47 76 79 59 51 79 79 60 52 74 72 57 50 68 71
DEWPT 34 31 34 37 36 35 35 39 37 35 36 42 41 39 39 41
PWIND DIR SW W SW SW S N SW SW
WIND CHAR GN GN GN GN GN GN LT GN
AVG CLOUDS SC FW FW SC B1 SC FW SC B1 SC B1 B1 B2 B1 B1 B1
POP 12HR 0 5 5 10 10 40 50 50
RAIN SHWRS C C C C C
TSTMS C C
MTZ032-212200-
MILES CITY-CUSTER MT
46.42N 105.90W ELEV. 2628 FT
425 AM MDT THU MAY 21 2026
DATE THU 05/21/26 FRI 05/22/26 SAT 05/23/26
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 58 39 68 41 77
TEMP 44 48 51 55 56 51 46 42 40 51 62 66 66 57 48 43 41 55 70 75 76
DEWPT 44 46 44 42 40 40 41 39 38 39 40 37 35 39 38 37 35 37 39 37 38
RH 100 93 77 61 55 66 83 89 92 63 44 34 32 51 68 79 79 51 32 25 25
WIND DIR N N N N N NW W NW NW NW NW NW NW SE SE SE S S S SW SW
WIND SPD 10 11 14 14 11 4 4 5 5 8 9 9 6 3 3 2 3 3 4 4 4
CLOUDS OV B2 B2 B2 B2 B2 B1 B1 B1 SC SC SC B1 SC SC SC SC FW FW FW FW
POP 12HR 70 20 5 0 0
QPF 12HR 0.07 0.01 0 0 0
SNOW 12HR 00-00 00-00 00-00
RAIN L L L L
RAIN SHWRS S S
DATE SUN 05/24/26 MON 05/25/26 TUE 05/26/26 WED 05/27/26
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 48 86 52 90 58 90 57 83
TEMP 57 48 79 84 62 53 83 88 69 60 85 86 69 59 78 80
DEWPT 40 37 40 37 41 40 43 39 44 43 46 44 49 48 48 47
PWIND DIR S SW SW SW SE SE SE S
WIND CHAR LT GN LT LT GN BZ BZ BZ
AVG CLOUDS FW FW FW FW SC SC FW FW FW SC SC SC SC B1 B1 SC
POP 12HR 0 0 0 0 5 5 20 20
RAIN SHWRS S S
TSTMS S S
MTZ033-212200-
BAKER-FALLON MT
46.38N 104.24W ELEV. 2969 FT
425 AM MDT THU MAY 21 2026
DATE THU 05/21/26 FRI 05/22/26 SAT 05/23/26
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 61 38 64 37 76
TEMP 39 50 57 57 56 49 45 42 39 50 59 62 64 51 45 41 39 57 69 74 75
DEWPT 38 40 40 42 40 42 42 40 37 38 39 37 36 38 39 37 34 34 35 36 35
RH 96 68 53 57 55 77 89 93 92 63 47 39 35 61 79 85 82 42 28 25 23
WIND DIR N N NE NW N N NW NW NW NW NW N N NE N N N N SW SW W
WIND SPD 5 11 13 17 17 9 5 5 6 11 12 12 10 3 0 0 0 0 4 5 6
CLOUDS B2 B1 B2 B2 B2 OV OV B2 B2 B1 B1 B2 B2 SC SC SC SC FW FW SC FW
POP 12HR 70 70 30 0 0
QPF 12HR 0.12 0.19 0.04 0 0
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS L L L L C C C C C C
TSTMS S C
DATE SUN 05/24/26 MON 05/25/26 TUE 05/26/26 WED 05/27/26
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 44 85 51 90 57 89 57 82
TEMP 53 45 80 83 60 53 86 88 66 59 87 86 66 58 80 80
DEWPT 39 35 38 34 40 39 39 36 46 45 45 43 49 48 47 44
PWIND DIR S SW SW SW SE SE SE S
WIND CHAR LT GN LT LT BZ BZ WY WY
AVG CLOUDS SC FW FW FW FW SC FW FW FW SC SC FW SC B1 B1 SC
POP 12HR 0 0 0 0 5 5 20 20
RAIN SHWRS S S
TSTMS S S
WYZ199-212200-
SHERIDAN-SHERIDAN WY
44.80N 106.96W ELEV. 4019 FT
425 AM MDT THU MAY 21 2026
DATE THU 05/21/26 FRI 05/22/26 SAT 05/23/26
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 46 31 64 34 72
TEMP 41 43 41 43 45 42 38 33 31 46 57 62 64 50 43 38 35 50 67 70 71
DEWPT 41 43 41 40 37 36 34 30 29 34 35 34 34 36 34 30 29 34 37 36 36
RH 100100100 89 73 79 85 89 92 63 43 35 32 58 70 73 78 54 33 29 28
WIND DIR NW NW NW NW NW W W W W NW NW NW NW SW SW SW SW N NE N E
WIND SPD 3 11 19 16 12 6 5 4 3 3 8 5 4 2 3 2 1 0 3 3 3
CLOUDS B2 OV OV OV OV B2 B2 B2 B2 FW SC FW SC SC SC SC SC FW FW FW FW
POP 12HR 100 50 5 0 10
QPF 12HR 0.47 0.01 0 0 0
SNOW 12HR 00-00 00-00 00-00
RAIN L D D D
RAIN SHWRS C C
DATE SUN 05/24/26 MON 05/25/26 TUE 05/26/26 WED 05/27/26
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 40 82 44 86 46 84 46 80
TEMP 49 41 77 79 55 46 82 82 58 49 81 79 60 48 74 77
DEWPT 35 32 39 38 37 36 39 38 37 36 41 40 41 40 42 39
PWIND DIR S W SW SW S SE SW SE
WIND CHAR LT LT LT LT LT GN BZ GN
AVG CLOUDS FW FW FW FW FW FW FW FW FW SC SC SC B1 B1 B1 B1
POP 12HR 0 0 0 5 5 20 30 30
RAIN SHWRS S C C
TSTMS S S C
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