682
CDUS45 KRIW 310730
CLIP60
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
130 AM MDT SUN MAY 31 2026
...............................
..THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR MAY 30 2026
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1998 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 47 3:49 PM 75 2020 55 -8 69
MINIMUM 40 11:59 PM 24 2007 30 10 32
AVERAGE 44 42 2 51
PRECIPITATION (IN)
YESTERDAY 0.23 0.41 1999 0.09 0.14 0.00
2022
MONTH TO DATE 0.79 2.26 -1.47 2.45
SINCE MAR 1 4.71 6.44 -1.73 5.53
SINCE JAN 1 8.06 9.94 -1.88 9.23
DEGREE DAYS
HEATING
YESTERDAY 21 22 -1 14
MONTH TO DATE 682 801 -119 704
SINCE MAR 1 2754 3247 -493 1899
SINCE JUL 1 9724 11451 -1727 8819
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE MAR 1 0 0 0 0
SINCE JAN 1 0 0 0 0
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION W (280)
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION W (280)
AVERAGE WIND SPEED 1.5
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 10:00 AM
LOWEST 74 1:00 AM
AVERAGE 86
......................................................
THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 55 75 2025
MINIMUM TEMPERATURE (F) 30 25 2006
SUNRISE AND SUNSET
MAY 31 2026...........SUNRISE 5:40 AM MDT SUNSET 8:59 PM MDT
JUNE 1 2026..........SUNRISE 5:40 AM MDT SUNSET 9:00 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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