350
CDUS45 KRIW 300731
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1231 AM MST TUE DEC 30 2025
...............................
..THE CASPER WY CLIMATE SUMMARY FOR DECEMBER 29 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 33 4:06 PM 51 1965 34 -1 51
1980
2024
MINIMUM 16 7:38 AM -25 1990 14 2 23
AVERAGE 25 24 1
PRECIPITATION (IN)
YESTERDAY 0.00 0.16 1972 0.02 -0.02 0.00
MONTH TO DATE 0.36 0.57 -0.21 0.02
SINCE DEC 1 0.36 0.57 -0.21 0.02
SINCE JAN 1 12.05 12.18 -0.13 9.14
SNOWFALL (IN)
YESTERDAY 0.0 3.5 1972 0.3 -0.3 0.0
MONTH TO DATE 5.5 10.3 -4.8 T
SINCE DEC 1 5.5 10.3 -4.8 T
SINCE JUL 1 9.8 27.7 -17.9 T
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 40 41 -1 28
MONTH TO DATE 810 1164 -354 886
SINCE DEC 1 810 1164 -354 886
SINCE JUL 1 2236 2966 -730 2386
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 (220)
HIGHEST GUST SPEED 33 HIGHEST GUST DIRECTION SW (210)
AVERAGE WIND SPEED 17.2
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 65 6:00 PM
LOWEST 51 2:00 PM
AVERAGE 58
......................................................
THE CASPER WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 34 56 1980
MINIMUM TEMPERATURE (F) 14 -29 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.
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