Climatological Report (Daily)
Issued by NWS
Issued by NWS
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077
CDUS45 KRIW 310728
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
128 AM MDT SUN AUG 31 2025
...................................
...THE CASPER WY CLIMATE SUMMARY FOR AUGUST 30 2025...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1939 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 78 1:39 PM 96 1948 83 -5 86
MINIMUM 50 11:28 PM 34 1965 48 2 34
2024
AVERAGE 64 65 -1
PRECIPITATION (IN)
YESTERDAY 0.02 0.43 2003 0.02 0.00 0.00
MONTH TO DATE 0.72 0.77 -0.05 0.39
SINCE JUN 1 2.39 3.30 -0.91 1.72
SINCE JAN 1 7.31 8.81 -1.50 6.98
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 1 2 -1 5
MONTH TO DATE 5 25 -20 22
SINCE JUN 1 101 165 -64 92
SINCE JUL 1 10 39 -29 38
COOLING
YESTERDAY 0 3 -3 0
MONTH TO DATE 147 153 -6 182
SINCE JUN 1 449 404 45 470
SINCE JAN 1 449 408 41 473
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 26 HIGHEST WIND DIRECTION N (20)
HIGHEST GUST SPEED 34 HIGHEST GUST DIRECTION N (20)
AVERAGE WIND SPEED 8.0
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
LIGHT RAIN
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 4:00 AM
LOWEST 30 1:00 PM
AVERAGE 62
..........................................................
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 2025........SUNRISE 6:30 AM MDT SUNSET 7:41 PM MDT
SEPTEMBER 1 2025.....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.
$$