051
CDUS45 KRIW 090727
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1227 AM MST TUE DEC 09 2025
...............................
..THE CASPER WY CLIMATE SUMMARY FOR DECEMBER 8 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 49 1:45 PM 60 1939 36 13 50
MINIMUM 31 7:42 AM -33 2016 16 15 25
AVERAGE 40 26 14
PRECIPITATION (IN)
YESTERDAY 0.00 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)
YESTERDAY 0.0 5.8 1985 0.4 -0.4 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 0
DEGREE DAYS
HEATING
YESTERDAY 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
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
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 28 HIGHEST WIND DIRECTION SW (230)
HIGHEST GUST SPEED 38 HIGHEST GUST DIRECTION SW (230)
AVERAGE WIND SPEED 20.2
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT SNOW
RELATIVE HUMIDITY (PERCENT)
HIGHEST 69 5:00 AM
LOWEST 34 2:00 PM
AVERAGE 52
......................................................
THE CASPER WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 35 63 1939
MINIMUM TEMPERATURE (F) 15 -23 1977
SUNRISE AND SUNSET
DECEMBER 9 2025......SUNRISE 7:25 AM MST SUNSET 4:31 PM MST
DECEMBER 10 2025......SUNRISE 7:26 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.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page