326
CDUS45 KRIW 140730
CLIP60
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1230 AM MST SUN DEC 14 2025
...............................
..THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR DECEMBER 13 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 1:29 PM 37 1998 23 17 26
MINIMUM 17 11:59 PM -10 2020 3 14 3
AVERAGE 29 13 16 15
PRECIPITATION (IN)
YESTERDAY 0.00 0.41 2008 0.07 -0.07 0.00
MONTH TO DATE 0.96 0.94 0.02 0.08
SINCE DEC 1 0.96 0.94 0.02 0.08
SINCE JAN 1 18.70 21.68 -2.98 18.46
DEGREE DAYS
HEATING
YESTERDAY 36 52 -16 50
MONTH TO DATE 528 661 -133 609
SINCE DEC 1 528 661 -133 609
SINCE JUL 1 3486 4168 -682 3716
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 10 HIGHEST WIND DIRECTION W (270)
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION NW (310)
AVERAGE WIND SPEED 3.1
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 88 11:00 PM
LOWEST 41 1:00 PM
AVERAGE 65
......................................................
THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 23 38 1998
MINIMUM TEMPERATURE (F) 3 -13 2008
SUNRISE AND SUNSET
DECEMBER 14 2025......SUNRISE 7:51 AM MST SUNSET 4:42 PM MST
DECEMBER 15 2025......SUNRISE 7:52 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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