296
CDUS45 KRIW 160732
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1232 AM MST TUE DEC 16 2025
...............................
..THE CASPER WY CLIMATE SUMMARY FOR DECEMBER 15 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 59R 2:58 PM 57 1980 34 25 46
MINIMUM 40 6:57 AM -20 2008 14 26 21
AVERAGE 50 24 26
PRECIPITATION (IN)
YESTERDAY T 0.52 2010 0.02 -0.02 T
MONTH TO DATE 0.11 0.30 -0.19 0.01
SINCE DEC 1 0.11 0.30 -0.19 0.01
SINCE JAN 1 11.80 11.91 -0.11 9.13
SNOWFALL (IN)
YESTERDAY MM 7.3 2010 0.4 MM T
MONTH TO DATE 1.0 5.3 -4.3 T
SINCE DEC 1 1.0 5.3 -4.3 T
SINCE JUL 1 5.3 22.7 -17.4 T
SNOW DEPTH MM
DEGREE DAYS
HEATING
YESTERDAY 15 41 -26 31
MONTH TO DATE 438 590 -152 469
SINCE DEC 1 438 590 -152 469
SINCE JUL 1 1864 2392 -528 1969
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 30 HIGHEST WIND DIRECTION SW (210)
HIGHEST GUST SPEED 38 HIGHEST GUST DIRECTION SW (230)
AVERAGE WIND SPEED 20.1
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 33 7:00 AM
LOWEST 12 3:00 PM
AVERAGE 23
......................................................
THE CASPER WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 34 59 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.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page