757
CDUS45 KRIW 310727
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
127 AM MDT MON AUG 31 2026
...............................
..THE CASPER WY CLIMATE SUMMARY FOR AUGUST 30 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 79 11:06 AM 96 1948 83 -4 78
MINIMUM 59 11:59 PM 34 1965 48 11 50
2024
AVERAGE 69 65 4
PRECIPITATION (IN)
YESTERDAY T 0.43 2003 0.02 -0.02 0.02
MONTH TO DATE 2.01 0.77 1.24 0.72
SINCE JUN 1 2.69 3.30 -0.61 2.39
SINCE JAN 1 6.34 8.81 -2.47 7.31
SNOWFALL (IN)
YESTERDAY 0.0 0.0 2020 0.0 0.0 0.0
MONTH TO DATE 0.0 0.0 0.0 0.0
SINCE JUN 1 0.0 0.1 -0.1 0.0
SINCE JUL 1 0.0 0.0 0.0 0.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 0 2 -2 1
MONTH TO DATE 5 25 -20 5
SINCE JUN 1 97 165 -68 101
SINCE JUL 1 5 39 -34 10
COOLING
YESTERDAY 4 3 1 0
MONTH TO DATE 212 153 59 147
SINCE JUN 1 589 404 185 449
SINCE JAN 1 590 408 182 449
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 35 HIGHEST WIND DIRECTION SW (220)
HIGHEST GUST SPEED 44 HIGHEST GUST DIRECTION SW (220)
AVERAGE WIND SPEED 20.2
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 67 6:00 AM
LOWEST 30 12:00 PM
AVERAGE 49
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THE CASPER WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 83 94 1954
2007
MINIMUM TEMPERATURE (F) 47 33 1965
1977
2020
SUNRISE AND SUNSET
AUGUST 31 2026........SUNRISE 6:29 AM MDT SUNSET 7:42 PM MDT
SEPTEMBER 1 2026.....SUNRISE 6:31 AM MDT SUNSET 7:40 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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