273
CDUS45 KRIW 090045
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
645 PM MDT MON SEP 08 2025
...............................
..THE CASPER WY CLIMATE SUMMARY FOR SEPTEMBER 8 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 85 12:54 PM 92 1994 80 5 90
1998
2005
MINIMUM 53 2:44 AM 29 1962 45 8 43
2020
AVERAGE 69 62 7 67
PRECIPITATION (IN)
TODAY 0.00 0.84 1989 0.03 -0.03 0.00
MONTH TO DATE 0.01 0.19 -0.18 0.15
SINCE SEP 1 0.01 0.19 -0.18 0.15
SINCE JAN 1 7.32 9.02 -1.70 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 0 4 -4 0
MONTH TO DATE 30 28 2 7
SINCE SEP 1 30 28 2 7
SINCE JUL 1 40 73 -33 45
COOLING
TODAY 4 2 2 2
MONTH TO DATE 8 17 -9 31
SINCE SEP 1 8 17 -9 31
SINCE JAN 1 458 429 29 506
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 25 HIGHEST WIND DIRECTION NW (310)
HIGHEST GUST SPEED 34 HIGHEST GUST DIRECTION NW (310)
AVERAGE WIND SPEED 10.9
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 62
LOWEST 12
AVERAGE 37
......................................................
THE CASPER WY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 79 95 2021
MINIMUM TEMPERATURE (F) 45 24 2020
SUNRISE AND SUNSET
SEPTEMBER 8 2025.....SUNRISE 6:38 AM MDT SUNSET 7:28 PM MDT
SEPTEMBER 9 2025.....SUNRISE 6:39 AM MDT SUNSET 7:26 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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