037
CDUS45 KRIW 170045
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
545 PM MST TUE DEC 16 2025
...............................
..THE CASPER WY CLIMATE SUMMARY FOR DECEMBER 16 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 2:30 PM 59 1980 34 26 44
MINIMUM 42 4:59 PM -31 1964 14 28 17
AVERAGE 51 24 27 31
PRECIPITATION (IN)
TODAY T 0.36 2016 0.02 -0.02 0.00
MONTH TO DATE 0.11 0.32 -0.21 0.01
SINCE DEC 1 0.11 0.32 -0.21 0.01
SINCE JAN 1 11.80 11.93 -0.13 9.13
SNOWFALL (IN)
TODAY MM 0.4 MM 0.0
MONTH TO DATE 1.0 5.7 -4.7 T
SINCE DEC 1 1.0 5.7 -4.7 T
SINCE JUL 1 5.3 23.1 -17.8 T
SNOW DEPTH MM
DEGREE DAYS
HEATING
TODAY 14 41 -27 34
MONTH TO DATE 452 631 -179 503
SINCE DEC 1 452 631 -179 503
SINCE JUL 1 1878 2433 -555 2003
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 35 HIGHEST WIND DIRECTION W (250)
HIGHEST GUST SPEED 46 HIGHEST GUST DIRECTION W (250)
AVERAGE WIND SPEED 21.5
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 33
LOWEST 22
AVERAGE 28
......................................................
THE CASPER WY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 34 60 1980
MINIMUM TEMPERATURE (F) 14 -31 1964
SUNRISE AND SUNSET
DECEMBER 16 2025......SUNRISE 7:31 AM MST SUNSET 4:33 PM MST
DECEMBER 17 2025......SUNRISE 7:31 AM MST SUNSET 4:33 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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