403
CDUS45 KRIW 210045
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
545 PM MST TUE JAN 20 2026
...............................
..THE CASPER WY CLIMATE SUMMARY FOR JANUARY 20 2026
VALID TODAY AS OF 0500 PM LOCAL TIME.
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1939 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
TODAY
MAXIMUM 45 12:48 PM 57 2005 36 9 2
MINIMUM 23 4:59 PM -25 2025 15 8 -25
AVERAGE 34 25 9 -11
PRECIPITATION (IN)
TODAY T 0.53 2018 0.02 -0.02 0.00
MONTH TO DATE 0.13 0.32 -0.19 0.45
SINCE DEC 1 0.49 0.93 -0.44 0.61
SINCE JAN 1 0.13 0.32 -0.19 0.45
SNOWFALL (IN)
TODAY MM 0.3 MM 0.0
MONTH TO DATE 1.2 5.7 -4.5 6.0
SINCE DEC 1 6.7 16.7 -10.0 7.5
SINCE JUL 1 11.0 34.1 -23.1 7.5
SNOW DEPTH MM
DEGREE DAYS
HEATING
TODAY 31 40 -9 76
MONTH TO DATE 590 803 -213 944
SINCE DEC 1 1453 2051 -598 1914
SINCE JUL 1 2879 3853 -974 3414
COOLING
TODAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE DEC 1 0 0 0 0
SINCE JAN 1 0 0 0 0
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 32 HIGHEST WIND DIRECTION N (10)
HIGHEST GUST SPEED 42 HIGHEST GUST DIRECTION N (20)
AVERAGE WIND SPEED 18.4
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
LIGHT SNOW
RELATIVE HUMIDITY (PERCENT)
HIGHEST 74
LOWEST 20
AVERAGE 47
......................................................
THE CASPER WY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 36 56 1950
MINIMUM TEMPERATURE (F) 15 -21 1962
SUNRISE AND SUNSET
JANUARY 20 2026.......SUNRISE 7:31 AM MST SUNSET 5:03 PM MST
JANUARY 21 2026.......SUNRISE 7:30 AM MST SUNSET 5:05 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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