050
CDUS45 KRIW 090727
CLIRKS
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1227 AM MST TUE DEC 09 2025
...............................
..THE ROCK SPRINGS WY CLIMATE SUMMARY FOR DECEMBER 8 2025
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1948 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 42 1:19 PM 51 1981 30 12 37
MINIMUM 31 10:23 PM -20 2005 14 17 17
AVERAGE 37 22 15
PRECIPITATION (IN)
YESTERDAY 0.00 0.70 1985 0.01 -0.01 0.00
MONTH TO DATE 0.01 0.08 -0.07 0.00
SINCE DEC 1 0.01 0.08 -0.07 0.00
SINCE JAN 1 4.42 7.32 -2.90 5.69
DEGREE DAYS
HEATING
YESTERDAY 28 43 -15 38
MONTH TO DATE 292 334 -42 305
SINCE DEC 1 292 334 -42 305
SINCE JUL 1 1784 2288 -504 1943
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE DEC 1 0 0 0 0
SINCE JAN 1 442 320 122 445
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WIND (MPH)
HIGHEST WIND SPEED 33 HIGHEST WIND DIRECTION W (270)
HIGHEST GUST SPEED 44 HIGHEST GUST DIRECTION W (260)
AVERAGE WIND SPEED 18.8
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 72 5:00 AM
LOWEST 46 12:00 PM
AVERAGE 59
......................................................
THE ROCK SPRINGS WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 30 53 1975
2015
MINIMUM TEMPERATURE (F) 14 -21 1972
SUNRISE AND SUNSET
DECEMBER 9 2025......SUNRISE 7:31 AM MST SUNSET 4:46 PM MST
DECEMBER 10 2025......SUNRISE 7:32 AM MST SUNSET 4:46 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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