Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS45 KRIW 090727
CLIP60
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1227 AM MST TUE DEC 09 2025
...................................
...THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR DECEMBER 8 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 31 11:27 PM 38 2014 24 7 30
MINIMUM 24 7:49 AM -25 2013 4 20 5
AVERAGE 28 14 14 18
PRECIPITATION (IN)
YESTERDAY 0.04 0.55 2019 0.08 -0.04 0.06
MONTH TO DATE 0.71 0.58 0.13 0.06
SINCE DEC 1 0.71 0.58 0.13 0.06
SINCE JAN 1 18.45 21.32 -2.87 18.44
DEGREE DAYS
HEATING
YESTERDAY 37 51 -14 47
MONTH TO DATE 360 402 -42 356
SINCE DEC 1 360 402 -42 356
SINCE JUL 1 3318 3909 -591 3463
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 16 HIGHEST WIND DIRECTION W (260)
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION S (180)
AVERAGE WIND SPEED 6.3
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 89 3:00 AM
LOWEST 74 6:00 AM
AVERAGE 82
..........................................................
THE LAKE YELLOWSTONE WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 24 39 2014
2020
MINIMUM TEMPERATURE (F) 4 -28 2013
SUNRISE AND SUNSET
DECEMBER 9 2025......SUNRISE 7:47 AM MST SUNSET 4:42 PM MST
DECEMBER 10 2025......SUNRISE 7:48 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.
$$