896
CDUS45 KRIW 100727
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1227 AM MST WED DEC 10 2025
...............................
..THE CASPER WY CLIMATE SUMMARY FOR DECEMBER 9 2025
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1939 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 57 3:27 PM 63 1939 35 22 32
MINIMUM 28 11:59 PM -23 1977 15 13 14
AVERAGE 43 25 18
PRECIPITATION (IN)
YESTERDAY 0.04 0.33 1985 0.02 0.02 0.01
MONTH TO DATE 0.11 0.18 -0.07 0.01
SINCE DEC 1 0.11 0.18 -0.07 0.01
SINCE JAN 1 11.80 11.79 0.01 9.13
SNOWFALL (IN)
YESTERDAY T 5.0 1985 0.3 -0.3 T
MONTH TO DATE 1.0 3.1 -2.1 T
SINCE DEC 1 1.0 3.1 -2.1 T
SINCE JUL 1 5.3 20.5 -15.2 T
SNOW DEPTH T
DEGREE DAYS
HEATING
YESTERDAY 22 40 -18 42
MONTH TO DATE 298 348 -50 272
SINCE DEC 1 298 348 -50 272
SINCE JUL 1 1724 2150 -426 1772
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE DEC 1 0 0 0 0
SINCE JAN 1 467 443 24 538
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WIND (MPH)
HIGHEST WIND SPEED 43 HIGHEST WIND DIRECTION SW (210)
HIGHEST GUST SPEED 57 HIGHEST GUST DIRECTION SW (210)
AVERAGE WIND SPEED 21.7
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
LIGHT SNOW
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 92 7:00 PM
LOWEST 40 4:00 PM
AVERAGE 66
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THE CASPER WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 35 63 1939
MINIMUM TEMPERATURE (F) 15 -18 1961
SUNRISE AND SUNSET
DECEMBER 10 2025......SUNRISE 7:26 AM MST SUNSET 4:31 PM MST
DECEMBER 11 2025......SUNRISE 7:27 AM MST SUNSET 4:31 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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