533
FOUS55 KBYZ 171121
PFMBYZ
POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE BILLINGS MT
520 AM MDT SUN MAY 17 2026
MTZ235-172200-
BILLINGS-YELLOWSTONE MT
45.81N 108.53W ELEV. 3648 FT
520 AM MDT SUN MAY 17 2026
DATE SUN 05/17/26 MON 05/18/26 TUE 05/19/26
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 56 36 49 32 65
TEMP 41 46 52 54 53 47 42 39 37 40 43 48 48 44 40 35 34 47 58 63 64
DEWPT 35 33 28 27 29 30 31 30 29 30 28 28 28 28 30 29 29 31 28 26 25
RH 79 60 39 35 39 51 65 70 72 67 55 46 46 53 67 78 82 53 32 24 22
WIND DIR W NW NW N N N N N N N N N NE NE SE SW SW SW W SW S
WIND SPD 17 19 17 19 20 19 14 12 11 12 12 11 10 8 3 3 4 8 6 5 6
CLOUDS B2 SC SC B1 B1 B1 B2 B2 OV OV OV B2 OV B1 SC SC FW FW FW SC SC
POP 12HR 20 20 20 5 0
QPF 12HR 0 0 0 0 0
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS S S S S S
SNOWSHWRS S
DATE WED 05/20/26 THU 05/21/26 FRI 05/22/26 SAT 05/23/26
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 41 69 43 70 47 74 48 77
TEMP 48 42 64 65 51 44 64 69 55 49 69 70 56 49 71 75
DEWPT 29 28 28 31 36 36 35 33 36 36 37 37 39 38 38 34
PWIND DIR S W NW NW SE W NW W
WIND CHAR LT GN LT LT LT LT LT GN
AVG CLOUDS B1 SC B1 B1 B1 B1 B1 SC SC SC B1 B1 B1 SC SC SC
POP 12HR 0 30 40 10 5 20 30 10
RAIN SHWRS C C C S C
TSTMS S S S S
MTZ065-172200-
LIVINGSTON-PARK MT
45.70N 110.47W ELEV. 4656 FT
520 AM MDT SUN MAY 17 2026
DATE SUN 05/17/26 MON 05/18/26 TUE 05/19/26
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 28 47 25 61
TEMP 31 37 43 46 46 39 35 31 29 34 41 45 46 40 34 29 27 45 54 59 60
DEWPT 30 25 24 25 25 27 28 26 25 24 25 25 26 28 27 24 22 25 23 23 24
RH 96 61 47 43 43 62 75 81 85 66 52 45 45 62 75 81 81 45 30 25 25
WIND DIR W W NW NW N N NW NW NW NW NE NE NE E S SW SW W W W W
WIND SPD 14 14 18 17 17 19 11 8 8 9 8 6 8 4 3 4 5 6 9 9 6
CLOUDS SC B1 B2 B1 B2 B2 B2 B2 OV OV OV B2 B1 SC SC SC SC FW SC SC B1
POP 12HR 40 40 50 20 0
QPF 12HR 0 0.06 0.02 0 0
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS S C C C S C S S
SNOWSHWRS S C S C C
TSTMS S S
WIND CHILL 20
MIN CHILL 20 21 27 21 24 31 20 26
DATE WED 05/20/26 THU 05/21/26 FRI 05/22/26 SAT 05/23/26
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 35 63 36 67 41 70 41 74
TEMP 43 36 57 59 45 39 61 65 51 44 64 65 51 44 68 72
DEWPT 29 26 27 30 33 32 31 32 35 33 33 35 36 34 32 32
PWIND DIR SW W W W SW W W W
WIND CHAR LT GN LT LT LT GN GN GN
AVG CLOUDS B1 B1 B1 B1 B1 SC B1 SC SC B1 B1 B1 B1 SC SC SC
POP 12HR 10 40 40 20 20 40 30 20
RAIN SHWRS C C C S S S S C C S S
TSTMS S S
MTZ032-172200-
MILES CITY-CUSTER MT
46.42N 105.90W ELEV. 2628 FT
520 AM MDT SUN MAY 17 2026
DATE SUN 05/17/26 MON 05/18/26 TUE 05/19/26
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 59 36 48 33 61
TEMP 42 46 54 57 56 48 43 39 37 40 42 47 46 43 40 35 35 44 52 59 60
DEWPT 38 36 36 35 36 38 38 36 33 35 32 32 32 33 36 33 33 34 30 27 27
RH 86 68 50 43 47 68 82 89 85 82 67 56 58 67 85 92 92 68 43 29 28
WIND DIR W NW NW NW NW NW NW NW N N N N N N N W W W W W SE
WIND SPD 18 21 21 20 19 17 13 12 12 13 12 12 12 8 4 3 3 3 4 4 4
CLOUDS B2 B1 SC SC B1 B1 B2 B2 OV OV OV OV OV B2 B1 SC SC SC SC FW FW
POP 12HR 10 10 40 10 5
QPF 12HR 0 0 0.01 0 0
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS C S S
DATE WED 05/20/26 THU 05/21/26 FRI 05/22/26 SAT 05/23/26
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 37 71 42 71 45 75 46 76
TEMP 45 38 65 67 51 43 65 69 54 46 69 71 55 48 69 74
DEWPT 30 29 34 35 41 40 38 36 39 39 41 40 43 41 41 39
PWIND DIR SE SW NW NW E S W W
WIND CHAR LT LT LT LT LT GN GN GN
AVG CLOUDS SC SC B1 SC B1 B1 B1 SC SC SC SC SC SC SC SC FW
POP 12HR 0 5 30 10 10 10 20 10
RAIN SHWRS C S S S
TSTMS S S
MTZ033-172200-
BAKER-FALLON MT
46.38N 104.24W ELEV. 2969 FT
520 AM MDT SUN MAY 17 2026
DATE SUN 05/17/26 MON 05/18/26 TUE 05/19/26
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 32 44 29 55
TEMP 43 47 53 57 55 45 40 36 33 37 40 43 42 38 35 32 31 40 48 53 55
DEWPT 39 39 37 37 34 37 37 35 32 32 32 32 30 33 33 32 31 31 29 27 25
RH 86 74 54 47 45 73 89 96 96 82 73 65 62 82 92100100 70 47 36 31
WIND DIR W W NW NW NW NW NW NW N N N N N N N NW NW NW NW NW W
WIND SPD 19 17 20 21 19 16 12 11 12 13 13 13 13 11 5 1 2 4 8 6 5
WIND GUST 32
CLOUDS B2 OV B2 SC SC B2 B1 B2 OV OV OV OV OV OV OV B2 B1 SC SC SC SC
POP 12HR 30 10 50 30 10
QPF 12HR 0.01 0 0.01 0.01 0
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS C C C C C C S S
DATE WED 05/20/26 THU 05/21/26 FRI 05/22/26 SAT 05/23/26
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 32 69 39 68 40 72 43 74
TEMP 39 33 64 67 48 42 64 66 49 43 68 70 52 45 69 72
DEWPT 28 26 31 31 39 39 36 34 38 39 38 37 42 41 39 36
PWIND DIR SE S S NW SE S S W
WIND CHAR LT GN LT LT LT GN GN GN
AVG CLOUDS SC SC SC SC B1 B1 B1 SC SC SC SC SC B1 B1 SC SC
POP 12HR 0 5 20 20 10 20 30 20
RAIN SHWRS S S S S S C S S S
TSTMS S S S
WYZ199-172200-
SHERIDAN-SHERIDAN WY
44.80N 106.96W ELEV. 4019 FT
520 AM MDT SUN MAY 17 2026
DATE SUN 05/17/26 MON 05/18/26 TUE 05/19/26
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 52 30 42 26 58
TEMP 36 41 48 50 49 44 40 34 31 34 37 40 42 37 34 29 27 42 51 56 58
DEWPT 35 32 28 26 27 32 33 31 31 33 31 30 30 30 29 26 25 29 28 27 28
RH 96 70 46 39 42 62 76 89100 96 79 67 62 75 82 88 92 60 41 32 32
WIND DIR NW NW NW NW N NW NW NW NW NW NW NW NW NW W SW SW NE N N S
WIND SPD 23 27 20 18 19 17 20 17 16 19 19 17 13 4 2 1 1 1 3 3 4
WIND GUST 39 29 29 27
CLOUDS B2 B1 B1 B1 B2 OV OV OV OV OV OV OV B2 B2 SC SC FW FW FW FW SC
POP 12HR 30 70 90 20 10
QPF 12HR 0 0.06 0.12 0.01 0
SNOW 12HR 00-00 00-00 T
RAIN SHWRS S C C C L S S L L S S
SNOWSHWRS L D D L S
WIND CHILL 25 30 23 20 23
MIN CHILL 25 25 30 20 20 27 31 26 31
DATE WED 05/20/26 THU 05/21/26 FRI 05/22/26 SAT 05/23/26
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 31 65 34 66 37 71 39 74
TEMP 38 32 61 62 43 36 61 64 47 39 67 68 50 41 68 71
DEWPT 28 26 29 31 35 33 35 35 35 34 37 37 38 36 38 37
PWIND DIR S NW W NW SW NE W NW
WIND CHAR LT LT LT LT LT LT LT LT
AVG CLOUDS SC SC SC B1 B1 SC B1 B1 SC SC SC B1 SC SC SC B1
POP 12HR 0 30 30 40 20 30 30 30
RAIN SHWRS C C S C C S C C S S C
TSTMS S S S S S S
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