266
CDUS45 KRIW 100045
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
645 PM MDT TUE SEP 09 2025
...............................
..THE CASPER WY CLIMATE SUMMARY FOR SEPTEMBER 9 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 82 3:27 PM 95 2021 79 3 88
MINIMUM 44 5:31 AM 24 2020 45 -1 57
AVERAGE 63 62 1 73
PRECIPITATION (IN)
TODAY 0.00 0.46 1940 0.02 -0.02 0.00
MONTH TO DATE 0.01 0.21 -0.20 0.15
SINCE SEP 1 0.01 0.21 -0.20 0.15
SINCE JAN 1 7.32 9.04 -1.72 7.13
SNOWFALL (IN)
TODAY MM 0.0 MM 0.0
MONTH TO DATE 0.0 0.1 -0.1 0.0
SINCE SEP 1 0.0 0.1 -0.1 0.0
SINCE JUL 1 0.0 0.1 -0.1 0.0
SNOW DEPTH MM
DEGREE DAYS
HEATING
TODAY 2 5 -3 0
MONTH TO DATE 32 33 -1 7
SINCE SEP 1 32 33 -1 7
SINCE JUL 1 42 78 -36 45
COOLING
TODAY 0 2 -2 8
MONTH TO DATE 7 19 -12 39
SINCE SEP 1 7 19 -12 39
SINCE JAN 1 457 431 26 514
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION SW (210)
HIGHEST GUST SPEED 25 HIGHEST GUST DIRECTION SW (220)
AVERAGE WIND SPEED 7.6
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 71
LOWEST 19
AVERAGE 45
......................................................
THE CASPER WY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 79 95 2021
MINIMUM TEMPERATURE (F) 44 27 2020
SUNRISE AND SUNSET
SEPTEMBER 9 2025.....SUNRISE 6:39 AM MDT SUNSET 7:26 PM MDT
SEPTEMBER 10 2025.....SUNRISE 6:41 AM MDT SUNSET 7:24 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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