758
CDUS45 KRIW 150728
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1228 AM MST MON DEC 15 2025
...............................
..THE CASPER WY CLIMATE SUMMARY FOR DECEMBER 14 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 2:54 PM 55 1998 34 25 47
MINIMUM 38 12:16 AM -19 2008 14 24 28
AVERAGE 49 24 25
PRECIPITATION (IN)
YESTERDAY 0.00 0.56 2015 0.02 -0.02 T
MONTH TO DATE 0.11 0.28 -0.17 0.01
SINCE DEC 1 0.11 0.28 -0.17 0.01
SINCE JAN 1 11.80 11.89 -0.09 9.13
SNOWFALL (IN)
YESTERDAY 0.0 6.1 2015 0.3 -0.3 0.0
MONTH TO DATE 1.0 4.9 -3.9 T
SINCE DEC 1 1.0 4.9 -3.9 T
SINCE JUL 1 5.3 22.3 -17.0 T
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 16 41 -25 27
MONTH TO DATE 423 549 -126 438
SINCE DEC 1 423 549 -126 438
SINCE JUL 1 1849 2351 -502 1938
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
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WIND (MPH)
HIGHEST WIND SPEED 32 HIGHEST WIND DIRECTION SW (230)
HIGHEST GUST SPEED 42 HIGHEST GUST DIRECTION SW (220)
AVERAGE WIND SPEED 19.0
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 44 12:00 AM
LOWEST 15 3:00 PM
AVERAGE 30
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THE CASPER WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 34 57 1980
MINIMUM TEMPERATURE (F) 14 -20 2008
SUNRISE AND SUNSET
DECEMBER 15 2025......SUNRISE 7:30 AM MST SUNSET 4:32 PM MST
DECEMBER 16 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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