492
CDUS45 KRIW 210727
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1227 AM MST WED JAN 21 2026
...............................
..THE CASPER WY CLIMATE SUMMARY FOR JANUARY 20 2026
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)
YESTERDAY
MAXIMUM 45 12:48 PM 57 2005 36 9 2
MINIMUM 12 7:02 PM -25 2025 15 -3 -25
AVERAGE 29 25 4
PRECIPITATION (IN)
YESTERDAY 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)
YESTERDAY T 8.1 2018 0.3 -0.3 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 0
DEGREE DAYS
HEATING
YESTERDAY 36 40 -4 76
MONTH TO DATE 595 803 -208 944
SINCE DEC 1 1458 2051 -593 1914
SINCE JUL 1 2884 3853 -969 3414
COOLING
YESTERDAY 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 15.4
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT SNOW
RELATIVE HUMIDITY (PERCENT)
HIGHEST 92 7:00 PM
LOWEST 20 1:00 PM
AVERAGE 56
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THE CASPER WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 36 56 1950
MINIMUM TEMPERATURE (F) 15 -21 1962
SUNRISE AND SUNSET
JANUARY 21 2026.......SUNRISE 7:30 AM MST SUNSET 5:05 PM MST
JANUARY 22 2026.......SUNRISE 7:30 AM MST SUNSET 5:06 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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