753
CDUS45 KRIW 150728
CLIP60
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1228 AM MST MON DEC 15 2025
...............................
..THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR DECEMBER 14 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 40R 4:16 PM 38 1998 23 17 30
MINIMUM 11 8:31 AM -13 2008 3 8 22
AVERAGE 26 13 13 26
PRECIPITATION (IN)
YESTERDAY 0.00 0.54 2021 0.07 -0.07 0.06
MONTH TO DATE 0.96 1.01 -0.05 0.14
SINCE DEC 1 0.96 1.01 -0.05 0.14
SINCE JAN 1 18.70 21.75 -3.05 18.52
DEGREE DAYS
HEATING
YESTERDAY 39 52 -13 39
MONTH TO DATE 567 713 -146 648
SINCE DEC 1 567 713 -146 648
SINCE JUL 1 3525 4220 -695 3755
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 7 HIGHEST WIND DIRECTION W (250)
HIGHEST GUST SPEED 12 HIGHEST GUST DIRECTION SW (230)
AVERAGE WIND SPEED 1.4
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 92 12:00 AM
LOWEST 35 4:00 PM
AVERAGE 64
......................................................
THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 23 35 2006
MINIMUM TEMPERATURE (F) 2 -12 2007
SUNRISE AND SUNSET
DECEMBER 15 2025......SUNRISE 7:52 AM MST SUNSET 4:42 PM MST
DECEMBER 16 2025......SUNRISE 7:52 AM MST SUNSET 4:43 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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