835
CDUS45 KRIW 200730
CLIP60
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
130 AM MDT WED MAY 20 2026
...............................
..THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR MAY 19 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 49 2:01 PM 70 2002 52 -3 44
MINIMUM 16 5:01 AM 15 2003 28 -12 28
AVERAGE 33 40 -7 36
PRECIPITATION (IN)
YESTERDAY 0.00 0.38 2005 0.08 -0.08 0.11
MONTH TO DATE 0.09 1.31 -1.22 1.77
SINCE MAR 1 4.01 5.49 -1.48 4.85
SINCE JAN 1 7.36 8.99 -1.63 8.55
DEGREE DAYS
HEATING
YESTERDAY 32 25 7 29
MONTH TO DATE 460 539 -79 475
SINCE MAR 1 2532 2985 -453 1670
SINCE JUL 1 9502 11189 -1687 8590
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 13 HIGHEST WIND DIRECTION W (270)
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION W (280)
AVERAGE WIND SPEED 3.2
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 87 5:00 AM
LOWEST 16 2:00 PM
AVERAGE 52
......................................................
THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 52 66 2002
MINIMUM TEMPERATURE (F) 28 17 2003
SUNRISE AND SUNSET
MAY 20 2026...........SUNRISE 5:49 AM MDT SUNSET 8:48 PM MDT
MAY 21 2026...........SUNRISE 5:48 AM MDT SUNSET 8:49 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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