566
CDUS45 KRIW 090045
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
545 PM MST MON DEC 08 2025
...............................
..THE CASPER WY CLIMATE SUMMARY FOR DECEMBER 8 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 49 1:45 PM 60 1939 36 13 50
MINIMUM 31 7:42 AM -33 2016 16 15 25
AVERAGE 40 26 14 38
PRECIPITATION (IN)
TODAY T 0.49 1985 0.02 -0.02 T
MONTH TO DATE 0.07 0.16 -0.09 T
SINCE DEC 1 0.07 0.16 -0.09 T
SINCE JAN 1 11.76 11.77 -0.01 9.12
SNOWFALL (IN)
TODAY MM 0.4 MM T
MONTH TO DATE 1.0 2.8 -1.8 T
SINCE DEC 1 1.0 2.8 -1.8 T
SINCE JUL 1 5.3 20.2 -14.9 T
SNOW DEPTH MM
DEGREE DAYS
HEATING
TODAY 25 40 -15 27
MONTH TO DATE 276 308 -32 230
SINCE DEC 1 276 308 -32 230
SINCE JUL 1 1702 2110 -408 1730
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 28 HIGHEST WIND DIRECTION W (250)
HIGHEST GUST SPEED 36 HIGHEST GUST DIRECTION W (250)
AVERAGE WIND SPEED 19.3
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 69
LOWEST 34
AVERAGE 52
......................................................
THE CASPER WY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 35 63 1939
MINIMUM TEMPERATURE (F) 15 -23 1977
SUNRISE AND SUNSET
DECEMBER 8 2025......SUNRISE 7:24 AM MST SUNSET 4:31 PM MST
DECEMBER 9 2025......SUNRISE 7:25 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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