512
CDUS45 KRIW 110045
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
645 PM MDT WED SEP 10 2025
...............................
..THE CASPER WY CLIMATE SUMMARY FOR SEPTEMBER 10 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 90 4:00 PM 95 2021 79 11 89
MINIMUM 43 5:28 AM 27 2020 44 -1 52
AVERAGE 67 62 5 71
PRECIPITATION (IN)
TODAY 0.00 0.40 1986 0.03 -0.03 0.00
MONTH TO DATE 0.01 0.24 -0.23 0.15
SINCE SEP 1 0.01 0.24 -0.23 0.15
SINCE JAN 1 7.32 9.07 -1.75 7.13
SNOWFALL (IN)
TODAY MM 0.1 MM 0.0
MONTH TO DATE 0.0 0.2 -0.2 0.0
SINCE SEP 1 0.0 0.2 -0.2 0.0
SINCE JUL 1 0.0 0.2 -0.2 0.0
SNOW DEPTH MM
DEGREE DAYS
HEATING
TODAY 0 5 -5 0
MONTH TO DATE 32 38 -6 7
SINCE SEP 1 32 38 -6 7
SINCE JUL 1 42 83 -41 45
COOLING
TODAY 2 1 1 6
MONTH TO DATE 9 20 -11 45
SINCE SEP 1 9 20 -11 45
SINCE JAN 1 459 432 27 520
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 23 HIGHEST WIND DIRECTION S (200)
HIGHEST GUST SPEED 33 HIGHEST GUST DIRECTION S (180)
AVERAGE WIND SPEED 9.7
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93
LOWEST 13
AVERAGE 53
......................................................
THE CASPER WY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 78 91 1993
MINIMUM TEMPERATURE (F) 44 26 2014
SUNRISE AND SUNSET
SEPTEMBER 10 2025.....SUNRISE 6:41 AM MDT SUNSET 7:24 PM MDT
SEPTEMBER 11 2025.....SUNRISE 6:42 AM MDT SUNSET 7:22 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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