Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS45 KRIW 310045
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
645 PM MDT SAT AUG 30 2025
...................................
...THE CASPER WY CLIMATE SUMMARY FOR AUGUST 30 2025...
VALID TODAY AS OF 0600 PM LOCAL TIME.
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)
TODAY
MAXIMUM 78 1:39 PM 96 1948 83 -5 86
MINIMUM 53 1:03 AM 34 1965 48 5 34
2024
AVERAGE 66 65 1 60
PRECIPITATION (IN)
TODAY 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)
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 2 -2 5
MONTH TO DATE 4 25 -21 22
SINCE JUN 1 100 165 -65 92
SINCE JUL 1 9 39 -30 38
COOLING
TODAY 1 3 -2 0
MONTH TO DATE 148 153 -5 182
SINCE JUN 1 450 404 46 470
SINCE JAN 1 450 408 42 473
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 26 HIGHEST WIND DIRECTION N (20)
HIGHEST GUST SPEED 34 HIGHEST GUST DIRECTION N (20)
AVERAGE WIND SPEED 9.3
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
THUNDERSTORM
LIGHT RAIN
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93
LOWEST 30
AVERAGE 62
..........................................................
THE CASPER WY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 83 94 1954
2007
MINIMUM TEMPERATURE (F) 47 33 1965
1977
2020
SUNRISE AND SUNSET
AUGUST 30 2025........SUNRISE 6:29 AM MDT SUNSET 7:43 PM MDT
AUGUST 31 2025........SUNRISE 6:30 AM MDT SUNSET 7:41 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$