920
FOUS55 KBYZ 181217
PFMBYZ
POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE BILLINGS MT
616 AM MDT MON MAY 18 2026
MTZ235-182200-
BILLINGS-YELLOWSTONE MT
45.81N 108.53W ELEV. 3648 FT
616 AM MDT MON MAY 18 2026
DATE MON 05/18/26 TUE 05/19/26 WED 05/20/26
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 50 29 67 43 71
TEMP 38 42 48 49 44 37 32 30 45 60 65 65 57 48 45 44 55 67 69 65
DEWPT 31 28 25 24 26 27 26 25 26 26 24 23 27 28 27 26 27 31 32 36
RH 76 57 40 37 49 67 78 81 47 27 21 20 31 46 49 49 34 26 25 34
WIND DIR N N N N NE W SW SW SW SW SW SW S SW SW SW SW W W N
WIND SPD 13 14 14 13 6 4 3 6 9 9 9 9 6 6 10 13 14 9 10 11
CLOUDS OV OV B2 B1 SC SC FW SC FW FW SC B1 B1 SC SC SC SC SC B1 B2
POP 12HR 20 5 5 0 10
QPF 12HR 0 0 0 0 0
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS S S S L
SNOWSHWRS
TSTMS S
DATE THU 05/21/26 FRI 05/22/26 SAT 05/23/26 SUN 05/24/26
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 43 63 42 71 45 79 50 84
TEMP 51 44 56 62 49 44 64 69 54 47 72 77 59 52 76 81
DEWPT 40 37 37 33 35 35 36 34 36 36 38 34 37 37 36 34
PWIND DIR N N SW SW SW SW W W
WIND CHAR GN GN LT LT LT LT LT GN
AVG CLOUDS B2 B2 B2 B1 B1 SC SC SC B1 SC SC SC B1 B1 SC SC
POP 12HR 70 50 10 10 5 0 5 5
RAIN SHWRS L L C C
TSTMS S S
MTZ065-182200-
LIVINGSTON-PARK MT
45.70N 110.47W ELEV. 4656 FT
616 AM MDT MON MAY 18 2026
DATE MON 05/18/26 TUE 05/19/26 WED 05/20/26
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 48 25 62 36 65
TEMP 34 40 45 46 40 31 29 26 42 56 60 60 51 44 39 37 51 60 63 60
DEWPT 23 23 23 24 25 23 23 19 19 23 22 22 29 28 27 26 28 28 30 34
RH 64 50 41 42 55 72 78 74 39 27 23 23 42 53 62 64 41 29 29 37
WIND DIR NW E NE E E SW NW W W W W W SW SW SW SW W W W W
WIND SPD 11 12 13 13 4 4 5 6 9 11 10 9 4 5 8 8 8 13 11 9
CLOUDS B2 B2 B1 B1 SC FW FW SC SC SC B1 SC SC SC SC SC SC B1 B1 B2
POP 12HR 40 10 5 0 20
QPF 12HR 0.02 0 0 0 0
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS C C S S D
SNOWSHWRS S C C
TSTMS S
DATE THU 05/21/26 FRI 05/22/26 SAT 05/23/26 SUN 05/24/26
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 36 61 36 68 40 76 44 80
TEMP 46 37 52 59 46 40 62 67 50 43 70 74 55 48 73 77
DEWPT 37 32 32 31 32 31 31 33 34 32 32 32 34 32 31 32
PWIND DIR NE NW SW W SW W SW W
WIND CHAR LT LT LT LT LT GN GN BZ
AVG CLOUDS B2 B2 B2 B1 B1 SC B1 B1 B1 SC SC SC B1 SC SC FW
POP 12HR 80 50 10 20 5 5 5 5
RAIN SHWRS D D C S S
TSTMS S S S
MTZ032-182200-
MILES CITY-CUSTER MT
46.42N 105.90W ELEV. 2628 FT
616 AM MDT MON MAY 18 2026
DATE MON 05/18/26 TUE 05/19/26 WED 05/20/26
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 48 30 64 40 73
TEMP 39 43 46 46 43 37 33 31 42 54 62 64 54 48 43 40 54 68 71 67
DEWPT 34 30 27 29 31 32 32 30 30 28 26 25 29 28 27 27 30 30 30 35
RH 82 60 47 51 62 82 96 96 62 36 25 22 38 46 53 59 40 24 22 30
WIND DIR NW NW N N N N NW W SW W SW S SE SE S S SW W W NW
WIND SPD 13 14 14 14 8 4 3 3 4 4 4 5 6 9 6 5 9 9 10 11
CLOUDS OV B2 B2 B2 B2 B1 SC SC FW FW FW FW SC SC SC SC SC SC SC B1
POP 12HR 20 20 0 0 5
QPF 12HR 0 0 0 0 0
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS S S S S S
SNOWSHWRS
OBVIS PF
DATE THU 05/21/26 FRI 05/22/26 SAT 05/23/26 SUN 05/24/26
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 43 65 41 71 43 78 48 82
TEMP 52 44 58 63 49 42 64 69 52 45 71 75 57 49 76 80
DEWPT 42 40 39 37 39 38 38 36 38 38 40 38 40 40 41 38
PWIND DIR NW NW W W S S S W
WIND CHAR GN GN LT LT LT LT GN GN
AVG CLOUDS B2 B2 B2 B1 B1 SC SC SC SC SC SC SC SC SC SC SC
POP 12HR 40 40 10 10 5 5 5 5
RAIN SHWRS S C C S
MTZ033-182200-
BAKER-FALLON MT
46.38N 104.24W ELEV. 2969 FT
616 AM MDT MON MAY 18 2026
DATE MON 05/18/26 TUE 05/19/26 WED 05/20/26
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 29 59 35 72
TEMP 40 42 44 45 39 37 32 30 40 50 57 59 47 42 39 37 54 68 71 68
DEWPT 35 33 30 31 32 33 31 30 28 26 24 22 26 25 23 22 24 25 27 31
RH 82 70 57 58 76 85 96100 62 39 28 24 43 50 52 54 31 20 19 25
WIND DIR NW NW NW N N NW NW NW NW NW NW SW SE SE S S S SW SW W
WIND SPD 13 14 14 14 10 5 3 1 8 6 6 4 4 10 12 11 13 12 11 11
CLOUDS OV OV B2 OV OV OV B2 B2 B1 FW FW FW FW SC SC SC FW FW SC B1
POP 12HR 40 20 5 0 5
QPF 12HR 0.01 0 0 0 0
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS C C C S S S S S
SNOWSHWRS S
OBVIS PF
DATE THU 05/21/26 FRI 05/22/26 SAT 05/23/26 SUN 05/24/26
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 39 64 38 68 42 75 46 81
TEMP 49 40 59 62 45 40 63 66 48 43 70 73 53 48 76 79
DEWPT 41 37 38 34 38 37 35 33 37 37 37 35 40 39 39 36
PWIND DIR NW NW W W S S S W
WIND CHAR LT GN LT LT LT LT GN GN
AVG CLOUDS B2 B2 B2 B1 B1 SC SC SC SC SC SC SC SC SC SC SC
POP 12HR 30 40 30 20 20 5 10 5
RAIN SHWRS S C C C C S S
WYZ199-182200-
SHERIDAN-SHERIDAN WY
44.80N 106.96W ELEV. 4019 FT
616 AM MDT MON MAY 18 2026
DATE MON 05/18/26 TUE 05/19/26 WED 05/20/26
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 43 24 60 31 67
TEMP 33 36 39 41 37 32 26 25 39 53 58 60 46 39 34 32 48 64 65 65
DEWPT 31 30 28 27 29 27 23 22 24 25 25 28 30 27 24 24 28 30 31 33
RH 92 79 64 57 72 81 88 88 54 33 28 29 53 62 66 72 46 28 28 30
WIND DIR NW NW NW NW W W SW SW E N E SE S S SW SW N N N NW
WIND SPD 17 18 18 16 8 3 2 1 4 4 3 8 5 6 3 2 2 3 3 5
CLOUDS OV OV B2 B2 B2 SC FW FW FW FW FW SC SC SC FW FW FW SC SC SC
POP 12HR 80 10 0 0 10
QPF 12HR 0.04 0 0 0 0
SNOW 12HR T 00-00 00-00
RAIN SHWRS S C C S
SNOWSHWRS L C
TSTMS S
WIND CHILL 22
MIN CHILL 20 21 27 28 25 29 28
DATE THU 05/21/26 FRI 05/22/26 SAT 05/23/26 SUN 05/24/26
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 36 58 33 67 36 75 40 80
TEMP 46 37 51 56 42 35 61 65 45 38 69 73 50 42 75 77
DEWPT 36 35 38 35 34 32 36 35 36 33 38 36 36 34 37 36
PWIND DIR NW NW W N SW W W NW
WIND CHAR LT GN LT LT LT LT LT LT
AVG CLOUDS B1 B1 B2 B2 SC SC SC B1 SC SC SC SC SC SC SC SC
POP 12HR 40 70 20 30 5 10 5 10
RAIN SHWRS S C L L S S S C
TSTMS S S S
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