441
CDUS45 KRIW 120045
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
545 PM MST THU DEC 11 2025
...............................
..THE CASPER WY CLIMATE SUMMARY FOR DECEMBER 11 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 60R 1:40 PM 59 1939 35 25 38
MINIMUM 46 8:16 AM -19 1985 15 31 25
AVERAGE 53 25 28 32
PRECIPITATION (IN)
TODAY T 0.15 1984 0.02 -0.02 0.00
MONTH TO DATE 0.11 0.22 -0.11 0.01
SINCE DEC 1 0.11 0.22 -0.11 0.01
SINCE JAN 1 11.80 11.83 -0.03 9.13
SNOWFALL (IN)
TODAY MM 0.4 MM 0.0
MONTH TO DATE 1.0 3.9 -2.9 T
SINCE DEC 1 1.0 3.9 -2.9 T
SINCE JUL 1 5.3 21.3 -16.0 T
SNOW DEPTH MM
DEGREE DAYS
HEATING
TODAY 12 40 -28 33
MONTH TO DATE 334 428 -94 345
SINCE DEC 1 334 428 -94 345
SINCE JUL 1 1760 2230 -470 1845
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 38 HIGHEST WIND DIRECTION SW (220)
HIGHEST GUST SPEED 49 HIGHEST GUST DIRECTION SW (220)
AVERAGE WIND SPEED 26.0
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 53
LOWEST 25
AVERAGE 39
......................................................
THE CASPER WY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 35 60 2014
MINIMUM TEMPERATURE (F) 15 -14 2000
SUNRISE AND SUNSET
DECEMBER 11 2025......SUNRISE 7:27 AM MST SUNSET 4:31 PM MST
DECEMBER 12 2025......SUNRISE 7:28 AM MST SUNSET 4:32 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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