448
CDUS45 KRIW 310045
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
545 PM MST TUE DEC 30 2025
...............................
..THE CASPER WY CLIMATE SUMMARY FOR DECEMBER 30 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 41 3:41 PM 56 1980 34 7 38
MINIMUM 27 5:26 AM -29 1978 14 13 19
AVERAGE 34 24 10 29
PRECIPITATION (IN)
TODAY 0.00 0.45 2010 0.02 -0.02 0.12
MONTH TO DATE 0.36 0.59 -0.23 0.14
SINCE DEC 1 0.36 0.59 -0.23 0.14
SINCE JAN 1 12.05 12.20 -0.15 9.26
SNOWFALL (IN)
TODAY MM 0.4 MM 1.5
MONTH TO DATE 5.5 10.7 -5.2 1.5
SINCE DEC 1 5.5 10.7 -5.2 1.5
SINCE JUL 1 9.8 28.1 -18.3 1.5
SNOW DEPTH MM
DEGREE DAYS
HEATING
TODAY 31 41 -10 36
MONTH TO DATE 841 1205 -364 922
SINCE DEC 1 841 1205 -364 922
SINCE JUL 1 2267 3007 -740 2422
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 24 HIGHEST WIND DIRECTION SW (210)
HIGHEST GUST SPEED 29 HIGHEST GUST DIRECTION SW (210)
AVERAGE WIND SPEED 16.4
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 63
LOWEST 44
AVERAGE 54
......................................................
THE CASPER WY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 34 54 1980
MINIMUM TEMPERATURE (F) 14 -34 1978
SUNRISE AND SUNSET
DECEMBER 30 2025......SUNRISE 7:37 AM MST SUNSET 4:41 PM MST
DECEMBER 31 2025......SUNRISE 7:37 AM MST SUNSET 4:41 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