088
CDUS45 KRIW 300045
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
645 PM MDT MON SEP 29 2025
...............................
..THE CASPER WY CLIMATE SUMMARY FOR SEPTEMBER 29 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 76 3:43 PM 91 2024 68 8 91
MINIMUM 53 4:18 AM 18 1984 37 16 50
AVERAGE 65 53 12 71
PRECIPITATION (IN)
TODAY 0.00 0.50 1995 0.04 -0.04 0.00
2021
MONTH TO DATE 2.55 0.91 1.64 0.24
SINCE SEP 1 2.55 0.91 1.64 0.24
SINCE JAN 1 9.86 9.74 0.12 7.22
SNOWFALL (IN)
TODAY MM 0.1 MM 0.0
MONTH TO DATE 0.0 1.4 -1.4 0.0
SINCE SEP 1 0.0 1.4 -1.4 0.0
SINCE JUL 1 0.0 1.4 -1.4 0.0
SNOW DEPTH MM
DEGREE DAYS
HEATING
TODAY 0 12 -12 0
MONTH TO DATE 111 200 -89 86
SINCE SEP 1 111 200 -89 86
SINCE JUL 1 121 245 -124 124
COOLING
TODAY 0 0 0 6
MONTH TO DATE 17 29 -12 63
SINCE SEP 1 17 29 -12 63
SINCE JAN 1 467 441 26 538
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION SW (230)
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION SW (240)
AVERAGE WIND SPEED 9.2
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 83
LOWEST 30
AVERAGE 57
......................................................
THE CASPER WY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 68 88 1980
MINIMUM TEMPERATURE (F) 37 17 1985
SUNRISE AND SUNSET
SEPTEMBER 29 2025.....SUNRISE 7:01 AM MDT SUNSET 6:50 PM MDT
SEPTEMBER 30 2025.....SUNRISE 7:02 AM MDT SUNSET 6:48 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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