007
CDUS45 KRIW 100045
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
545 PM MST TUE DEC 09 2025
...............................
..THE CASPER WY CLIMATE SUMMARY FOR DECEMBER 9 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 57 3:27 PM 63 1939 35 22 32
MINIMUM 37 12:41 AM -23 1977 15 22 14
AVERAGE 47 25 22 23
PRECIPITATION (IN)
TODAY T 0.33 1985 0.02 -0.02 0.01
MONTH TO DATE 0.07 0.18 -0.11 0.01
SINCE DEC 1 0.07 0.18 -0.11 0.01
SINCE JAN 1 11.76 11.79 -0.03 9.13
SNOWFALL (IN)
TODAY MM 0.3 MM 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 MM
DEGREE DAYS
HEATING
TODAY 18 40 -22 42
MONTH TO DATE 294 348 -54 272
SINCE DEC 1 294 348 -54 272
SINCE JUL 1 1720 2150 -430 1772
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 43 HIGHEST WIND DIRECTION SW (210)
HIGHEST GUST SPEED 57 HIGHEST GUST DIRECTION SW (210)
AVERAGE WIND SPEED 28.1
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 76
LOWEST 40
AVERAGE 58
......................................................
THE CASPER WY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 35 63 1939
MINIMUM TEMPERATURE (F) 15 -18 1961
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