399
CDUS45 KRIW 010045
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
645 PM MDT MON AUG 31 2026
...............................
..THE CASPER WY CLIMATE SUMMARY FOR AUGUST 31 2026
VALID TODAY AS OF 0600 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 85 3:57 PM 94 1954 83 2 82
2007
MINIMUM 51 5:39 AM 33 1965 47 4 49
1977
2020
AVERAGE 68 65 3 66
PRECIPITATION (IN)
TODAY T 0.14 1972 0.02 -0.02 0.00
MONTH TO DATE 2.01 0.79 1.22 0.72
SINCE JUN 1 2.69 3.32 -0.63 2.39
SINCE JAN 1 6.34 8.83 -2.49 7.31
SNOWFALL (IN)
TODAY MM 0.0 MM 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 MM
DEGREE DAYS
HEATING
TODAY 0 3 -3 0
MONTH TO DATE 5 28 -23 5
SINCE JUN 1 97 168 -71 101
SINCE JUL 1 5 42 -37 10
COOLING
TODAY 3 3 0 1
MONTH TO DATE 215 157 58 148
SINCE JUN 1 592 408 184 450
SINCE JAN 1 593 412 181 450
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 22 HIGHEST WIND DIRECTION W (260)
HIGHEST GUST SPEED 40 HIGHEST GUST DIRECTION W (250)
AVERAGE WIND SPEED 11.3
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 77
LOWEST 11
AVERAGE 44
......................................................
THE CASPER WY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 82 97 1995
MINIMUM TEMPERATURE (F) 47 32 1965
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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