517
CDUS45 KRIW 110045
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
545 PM MST WED DEC 10 2025
...............................
..THE CASPER WY CLIMATE SUMMARY FOR DECEMBER 10 2025
VALID TODAY AS OF 0500 PM LOCAL TIME.
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)
TODAY
MAXIMUM 56 2:34 PM 63 1939 35 21 35
MINIMUM 26 2:35 AM -18 1961 15 11 14
AVERAGE 41 25 16 25
PRECIPITATION (IN)
TODAY T 0.23 1970 0.02 -0.02 0.00
MONTH TO DATE 0.11 0.20 -0.09 0.01
SINCE DEC 1 0.11 0.20 -0.09 0.01
SINCE JAN 1 11.80 11.81 -0.01 9.13
SNOWFALL (IN)
TODAY MM 0.4 MM 0.0
MONTH TO DATE 1.0 3.5 -2.5 T
SINCE DEC 1 1.0 3.5 -2.5 T
SINCE JUL 1 5.3 20.9 -15.6 T
SNOW DEPTH MM
DEGREE DAYS
HEATING
TODAY 24 40 -16 40
MONTH TO DATE 322 388 -66 312
SINCE DEC 1 322 388 -66 312
SINCE JUL 1 1748 2190 -442 1812
COOLING
TODAY 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
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 32 HIGHEST WIND DIRECTION SW (220)
HIGHEST GUST SPEED 41 HIGHEST GUST DIRECTION SW (220)
AVERAGE WIND SPEED 12.8
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.6
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 92
LOWEST 43
AVERAGE 68
......................................................
THE CASPER WY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 35 59 1939
MINIMUM TEMPERATURE (F) 15 -19 1985
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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