838
CDUS45 KRIW 230731
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1231 AM MST TUE DEC 23 2025
...............................
..THE CASPER WY CLIMATE SUMMARY FOR DECEMBER 22 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 61R 2:00 PM 55 1940 34 27 48
MINIMUM 38 11:59 PM -42 2022 14 24 28
AVERAGE 50 24 26
PRECIPITATION (IN)
YESTERDAY 0.00 0.23 1941 0.02 -0.02 0.00
MONTH TO DATE 0.21 0.43 -0.22 0.01
SINCE DEC 1 0.21 0.43 -0.22 0.01
SINCE JAN 1 11.90 12.04 -0.14 9.13
SNOWFALL (IN)
YESTERDAY 0.0 3.7 1965 0.3 -0.3 0.0
MONTH TO DATE 2.0 7.8 -5.8 T
SINCE DEC 1 2.0 7.8 -5.8 T
SINCE JUL 1 6.3 25.2 -18.9 T
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 15 41 -26 27
MONTH TO DATE 609 877 -268 675
SINCE DEC 1 609 877 -268 675
SINCE JUL 1 2035 2679 -644 2175
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 40 HIGHEST WIND DIRECTION W (250)
HIGHEST GUST SPEED 54 HIGHEST GUST DIRECTION W (250)
AVERAGE WIND SPEED 22.8
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 52 8:00 AM
LOWEST 27 3:00 PM
AVERAGE 40
......................................................
THE CASPER WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 34 53 1994
MINIMUM TEMPERATURE (F) 14 -39 1983
SUNRISE AND SUNSET
DECEMBER 23 2025......SUNRISE 7:35 AM MST SUNSET 4:36 PM MST
DECEMBER 24 2025......SUNRISE 7:35 AM MST SUNSET 4:36 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