445
CDUS45 KRIW 170727
CLIP60
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
127 AM MDT SUN MAY 17 2026
...............................
..THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR MAY 16 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 4:02 PM 69 2006 51 -2 42
MINIMUM 28 5:46 AM 22 2009 27 1 27
AVERAGE 39 39 0 35
PRECIPITATION (IN)
YESTERDAY 0.00 0.50 2004 0.08 -0.08 0.07
MONTH TO DATE 0.08 1.08 -1.00 0.72
SINCE MAR 1 4.00 5.26 -1.26 3.80
SINCE JAN 1 7.35 8.76 -1.41 7.50
DEGREE DAYS
HEATING
YESTERDAY 26 26 0 30
MONTH TO DATE 361 462 -101 391
SINCE MAR 1 2433 2908 -475 1586
SINCE JUL 1 9403 11112 -1709 8506
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 15 HIGHEST WIND DIRECTION W (260)
HIGHEST GUST SPEED 31 HIGHEST GUST DIRECTION SW (240)
AVERAGE WIND SPEED 5.3
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 69 6:00 AM
LOWEST 26 10:00 AM
AVERAGE 48
......................................................
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 2026...........SUNRISE 5:52 AM MDT SUNSET 8:45 PM MDT
MAY 18 2026...........SUNRISE 5:51 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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