559
CDUS45 KRIW 210727
CLIRKS
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1227 AM MST SUN DEC 21 2025
...............................
..THE ROCK SPRINGS WY CLIMATE SUMMARY FOR DECEMBER 20 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 41 12:34 AM 51 1981 28 13 41
MINIMUM 27 11:59 PM -25 1990 13 14 14
AVERAGE 34 20 14
PRECIPITATION (IN)
YESTERDAY T 0.25 1967 0.01 -0.01 0.00
MONTH TO DATE 0.05 0.20 -0.15 T
SINCE DEC 1 0.05 0.20 -0.15 T
SINCE JAN 1 4.46 7.44 -2.98 5.69
DEGREE DAYS
HEATING
YESTERDAY 31 44 -13 37
MONTH TO DATE 598 859 -261 770
SINCE DEC 1 598 859 -261 770
SINCE JUL 1 2090 2813 -723 2408
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 43 HIGHEST WIND DIRECTION W (250)
HIGHEST GUST SPEED 55 HIGHEST GUST DIRECTION W (260)
AVERAGE WIND SPEED 13.1
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 92 3:00 AM
LOWEST 52 4:00 PM
AVERAGE 72
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THE ROCK SPRINGS WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 28 51 1969
MINIMUM TEMPERATURE (F) 13 -29 1990
SUNRISE AND SUNSET
DECEMBER 21 2025......SUNRISE 7:40 AM MST SUNSET 4:49 PM MST
DECEMBER 22 2025......SUNRISE 7:40 AM MST SUNSET 4:50 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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