508
CDUS45 KRIW 170742
CLIP60
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
142 AM MDT SAT MAY 17 2025
...............................
..THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR MAY 16 2025
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1998 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 42 MM 69 2006 51 -9 58
MINIMUM 27 3:00 AM 22 2009 27 0 28
AVERAGE 35 39 -4 43
PRECIPITATION (IN)
YESTERDAY 0.07 0.50 2004 0.08 -0.01 0.00
MONTH TO DATE 0.72 1.08 -0.36 1.08
SINCE MAR 1 3.80 5.26 -1.46 6.41
SINCE JAN 1 7.50 8.76 -1.26 10.88
DEGREE DAYS
HEATING
YESTERDAY 30 26 4 22
MONTH TO DATE 391 462 -71 413
SINCE MAR 1 1586 2908 -1322 2565
SINCE JUL 1 8506 11112 -2606 10039
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 6 HIGHEST WIND DIRECTION E (99)
HIGHEST GUST SPEED MM HIGHEST GUST DIRECTION MM
AVERAGE WIND SPEED 1.2
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 96 1:00 AM
LOWEST 64 3:00 PM
AVERAGE 80
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THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 51 69 2007
MINIMUM TEMPERATURE (F) 27 18 1999
SUNRISE AND SUNSET
MAY 17 2025...........SUNRISE 5:51 AM MDT SUNSET 8:45 PM MDT
MAY 18 2025...........SUNRISE 5:50 AM MDT SUNSET 8:46 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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