064
CDUS45 KRIW 310732
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1232 AM MST WED DEC 31 2025
...............................
..THE CASPER WY CLIMATE SUMMARY FOR DECEMBER 30 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 41 3:41 PM 56 1980 34 7 38
MINIMUM 27 5:26 AM -29 1978 14 13 19
AVERAGE 34 24 10
PRECIPITATION (IN)
YESTERDAY 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)
YESTERDAY 0.0 5.1 2010 0.4 -0.4 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 0
DEGREE DAYS
HEATING
YESTERDAY 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
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 24 HIGHEST WIND DIRECTION SW (210)
HIGHEST GUST SPEED 29 HIGHEST GUST DIRECTION SW (210)
AVERAGE WIND SPEED 14.6
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 63 6:00 PM
LOWEST 44 2:00 PM
AVERAGE 54
......................................................
THE CASPER WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 34 54 1980
MINIMUM TEMPERATURE (F) 14 -34 1978
SUNRISE AND SUNSET
DECEMBER 31 2025......SUNRISE 7:37 AM MST SUNSET 4:41 PM MST
JANUARY 1 2026.......SUNRISE 7:37 AM MST SUNSET 4:42 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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