155
FOUS55 KBYZ 210650
PFMBYZ
POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE BILLINGS MT
1250 AM MDT THU MAY 21 2026
MTZ235-221000-
BILLINGS-YELLOWSTONE MT
45.81N 108.53W ELEV. 3648 FT
1250 AM MDT THU MAY 21 2026
DATE 05/20/26 THU 05/21/26 FRI 05/22/26 SAT
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 42 57 39 68 44
TEMP 46 44 44 49 54 55 51 45 41 39 49 62 66 67 59 51 46 45
DEWPT 45 42 42 39 37 35 38 36 35 33 34 36 32 30 35 34 34 35
RH 96 93 93 68 52 47 61 70 79 79 56 38 28 25 40 52 63 68
WIND DIR W N N N N N W W W W W W SW S SE S SW SW
WIND SPD 8 11 13 10 8 8 5 5 8 10 10 5 4 4 5 4 4 6
CLOUDS OV OV OV OV B2 B2 B1 SC SC FW FW SC B1 SC SC SC SC SC
POP 12HR 100 90 5 0 0
QPF 12HR 0.27 0.29 0 0 0
SNOW 12HR 00-00 00-00 00-00
RAIN D D D
RAIN SHWRS C C
TSTMS S
DATE 05/23/26 SUN 05/24/26 MON 05/25/26 TUE 05/26/26 WED 05/27/26
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 51 87 54 90 55 85 54 80
TEMP 70 78 59 52 79 85 64 56 82 87 66 58 79 82 63 57 74 78
DEWPT 37 36 38 35 38 35 39 39 39 37 39 39 42 39 42 43 44 41
PWIND DIR SW SW SW SW SW SW N N NW
WIND CHAR GN LT GN LT GN GN GN GN GN
AVG CLOUDS FW FW SC FW FW SC SC SC FW FW SC SC B1 B1 B1 B1 B1 B1
POP 12HR 0 0 0 5 5 5 10 40 30
RAIN SHWRS C C C C
TSTMS S S
MTZ065-221000-
LIVINGSTON-PARK MT
45.70N 110.47W ELEV. 4656 FT
1250 AM MDT THU MAY 21 2026
DATE 05/20/26 THU 05/21/26 FRI 05/22/26 SAT
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 35 53 30 66 39
TEMP 39 37 38 45 50 51 45 38 33 31 45 58 63 65 54 47 42 40
DEWPT 38 36 35 35 34 33 34 31 29 27 28 29 29 29 33 32 31 31
RH 96 96 89 68 54 50 65 76 85 85 51 33 27 26 45 56 65 70
WIND DIR E NE NE NW W SE S W W W W W W SW S SW SW SW
WIND SPD 6 5 6 6 5 8 4 4 5 6 5 5 6 6 3 4 5 6
CLOUDS OV OV OV B2 B2 B2 SC FW SC SC SC SC B1 B1 SC SC SC SC
POP 12HR 100 90 10 0 0
QPF 12HR 0.11 0.16 0 0 0
SNOW 12HR 00-00 00-00 00-00
RAIN D D L
RAIN SHWRS C C
TSTMS S S
DATE 05/23/26 SUN 05/24/26 MON 05/25/26 TUE 05/26/26 WED 05/27/26
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 75 46 82 48 83 49 78 46 73
TEMP 68 74 55 47 76 79 59 51 79 79 60 52 74 72 57 50 68 71
DEWPT 34 34 34 31 34 37 36 35 35 39 37 35 36 42 41 39 39 41
PWIND DIR W SW W SW SW S N SW SW
WIND CHAR GN GN GN GN GN GN GN LT GN
AVG CLOUDS FW FW SC FW FW SC B1 SC FW SC B1 SC B1 B1 B2 B1 B1 B1
POP 12HR 0 0 5 5 10 10 40 50 50
RAIN SHWRS C C C C C
TSTMS C C
MTZ032-221000-
MILES CITY-CUSTER MT
46.42N 105.90W ELEV. 2628 FT
1250 AM MDT THU MAY 21 2026
DATE 05/20/26 THU 05/21/26 FRI 05/22/26 SAT
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 43 58 39 68 41
TEMP 48 46 48 51 55 56 51 46 42 40 51 62 66 66 57 48 43 41
DEWPT 45 43 43 43 42 40 40 41 39 38 39 40 37 35 39 38 37 35
RH 89 89 83 74 61 55 66 83 89 92 63 44 34 32 51 68 79 79
WIND DIR NW N N N N N NW W NW NW NW NW NW NW SE SE SE S
WIND SPD 6 10 11 14 14 11 4 4 5 5 8 9 9 6 3 3 2 3
CLOUDS B2 OV B2 B2 B2 B2 B2 B1 B1 B1 SC SC SC B1 SC SC SC SC
POP 12HR 60 70 20 5 0
QPF 12HR 0.01 0.07 0.01 0 0
SNOW 12HR 00-00 00-00 00-00
RAIN C L L L L
RAIN SHWRS S S
TSTMS
DATE 05/23/26 SUN 05/24/26 MON 05/25/26 TUE 05/26/26 WED 05/27/26
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 77 48 86 52 90 58 90 57 83
TEMP 70 76 57 48 79 84 62 53 83 88 69 60 85 86 69 59 78 80
DEWPT 39 38 40 37 40 37 41 40 43 39 44 43 46 44 49 48 48 47
PWIND DIR S S SW SW SW SE SE SE S
WIND CHAR LT LT GN LT LT GN BZ BZ BZ
AVG CLOUDS FW FW FW FW FW FW SC SC FW FW FW SC SC SC SC B1 B1 SC
POP 12HR 0 0 0 0 0 5 5 20 20
RAIN SHWRS S S
TSTMS S S
MTZ033-221000-
BAKER-FALLON MT
46.38N 104.24W ELEV. 2969 FT
1250 AM MDT THU MAY 21 2026
DATE 05/20/26 THU 05/21/26 FRI 05/22/26 SAT
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 38 61 38 64 37
TEMP 42 39 50 58 57 56 49 45 42 39 50 59 62 64 51 45 41 39
DEWPT 40 38 40 41 42 40 42 42 40 37 38 39 37 36 38 39 37 34
RH 93 96 68 53 57 55 77 89 93 92 63 47 39 35 61 79 85 82
WIND DIR N N N NE NW N N NW NW NW NW NW N N NE N N N
WIND SPD 3 5 11 13 17 17 9 5 5 6 11 12 12 10 3 0 0 0
CLOUDS SC B2 B1 B2 B2 B2 OV OV B2 B2 B1 B1 B2 B2 SC SC SC SC
POP 12HR 5 70 70 30 0
QPF 12HR 0 0.12 0.19 0.04 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 05/23/26 SUN 05/24/26 MON 05/25/26 TUE 05/26/26 WED 05/27/26
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 85 51 90 57 89 57 82
TEMP 69 75 53 45 80 83 60 53 86 88 66 59 87 86 66 58 80 80
DEWPT 35 35 39 35 38 34 40 39 39 36 46 45 45 43 49 48 47 44
PWIND DIR SW S SW SW SW SE SE SE S
WIND CHAR LT LT GN LT LT BZ BZ WY WY
AVG CLOUDS SC FW SC FW FW FW FW SC FW FW FW SC SC FW SC B1 B1 SC
POP 12HR 0 0 0 0 0 5 5 20 20
RAIN SHWRS S S
TSTMS S S
WYZ199-221000-
SHERIDAN-SHERIDAN WY
44.80N 106.96W ELEV. 4019 FT
1250 AM MDT THU MAY 21 2026
DATE 05/20/26 THU 05/21/26 FRI 05/22/26 SAT
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 39 46 31 64 34
TEMP 44 43 43 41 43 45 42 38 33 31 46 57 62 64 50 43 38 35
DEWPT 41 43 43 41 40 37 36 34 30 29 34 35 34 34 36 34 30 29
RH 89100100100 89 73 79 85 89 92 63 43 35 32 58 70 73 78
WIND DIR W NW NW NW NW NW W W W W NW NW NW NW SW SW SW SW
WIND SPD 3 3 11 19 16 12 6 5 4 3 3 8 5 4 2 3 2 1
CLOUDS B1 B2 OV OV OV OV B2 B2 B2 B2 FW SC FW SC SC SC SC SC
POP 12HR 30 100 50 5 0
QPF 12HR 0.01 0.44 0.01 0 0
SNOW 12HR 00-00 00-00 00-00
RAIN S L D D D
RAIN SHWRS C C
TSTMS
DATE 05/23/26 SUN 05/24/26 MON 05/25/26 TUE 05/26/26 WED 05/27/26
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 72 40 82 44 86 46 84 46 80
TEMP 67 71 49 41 77 79 55 46 82 82 58 49 81 79 60 48 74 77
DEWPT 37 36 35 32 39 38 37 36 39 38 37 36 41 40 41 40 42 39
PWIND DIR N S W SW SW S SE SW SE
WIND CHAR LT LT LT LT LT LT GN BZ GN
AVG CLOUDS FW FW FW FW FW FW FW FW FW FW FW SC SC SC B1 B1 B1 B1
POP 12HR 10 0 0 0 5 5 20 30 30
RAIN SHWRS S C C
TSTMS S S C
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page