968
CDUS45 KRIW 110730
CLIP60
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1230 AM MST THU DEC 11 2025
...............................
..THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR DECEMBER 10 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 36R 11:57 PM 36 2004 24 12 19
2014
MINIMUM 22 12:30 AM -24 2009 3 19 3
AVERAGE 29 13 16 11
PRECIPITATION (IN)
YESTERDAY 0.12 0.32 2015 0.07 0.05 0.00
MONTH TO DATE 0.95 0.72 0.23 0.07
SINCE DEC 1 0.95 0.72 0.23 0.07
SINCE JAN 1 18.69 21.46 -2.77 18.45
DEGREE DAYS
HEATING
YESTERDAY 36 52 -16 54
MONTH TO DATE 433 505 -72 463
SINCE DEC 1 433 505 -72 463
SINCE JUL 1 3391 4012 -621 3570
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE DEC 1 0 0 0 0
SINCE JAN 1 1 0 1 0
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION W (270)
HIGHEST GUST SPEED 37 HIGHEST GUST DIRECTION SW (230)
AVERAGE WIND SPEED 4.5
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 96 6:00 AM
LOWEST 85 3:00 AM
AVERAGE 91
......................................................
THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 23 41 2014
MINIMUM TEMPERATURE (F) 3 -17 2007
SUNRISE AND SUNSET
DECEMBER 11 2025......SUNRISE 7:48 AM MST SUNSET 4:42 PM MST
DECEMBER 12 2025......SUNRISE 7:49 AM MST SUNSET 4:42 PM MST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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