836
CDUS45 KRIW 260729
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
129 AM MDT SUN APR 26 2026
...............................
..THE CASPER WY CLIMATE SUMMARY FOR APRIL 25 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 47 4:07 PM 79 1987 58 -11 49
MINIMUM 23 12:47 AM 18 2008 30 -7 33
AVERAGE 35 44 -9
PRECIPITATION (IN)
YESTERDAY 0.00 0.84 1964 0.06 -0.06 0.00
MONTH TO DATE 0.98 1.12 -0.14 0.96
SINCE MAR 1 1.14 1.96 -0.82 2.29
SINCE JAN 1 1.68 3.01 -1.33 3.01
SNOWFALL (IN)
YESTERDAY 0.0 7.5 1985 0.3 -0.3 0.0
MONTH TO DATE 8.8 9.2 -0.4 7.7
SINCE MAR 1 10.4 19.5 -9.1 15.7
SINCE JUL 1 26.1 67.8 -41.7 26.2
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 30 21 9 24
MONTH TO DATE 490 584 -94 611
SINCE MAR 1 1076 1491 -415 1460
SINCE JUL 1 5253 6853 -1600 6475
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE MAR 1 0 0 0 0
SINCE JAN 1 0 0 0 0
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION E (80)
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION E (80)
AVERAGE WIND SPEED 9.7
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT SNOW
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 96 2:00 AM
LOWEST 49 4:00 PM
AVERAGE 73
......................................................
THE CASPER WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 59 80 1946
1981
2012
MINIMUM TEMPERATURE (F) 30 17 1988
2010
SUNRISE AND SUNSET
APRIL 26 2026.........SUNRISE 6:07 AM MDT SUNSET 8:01 PM MDT
APRIL 27 2026.........SUNRISE 6:05 AM MDT SUNSET 8:02 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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