082
CDUS45 KRIW 290729
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
129 AM MDT MON SEP 29 2025
...............................
..THE CASPER WY CLIMATE SUMMARY FOR SEPTEMBER 28 2025
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)
YESTERDAY
MAXIMUM 80 2:56 PM 92 2010 69 11 89
MINIMUM 48 2:20 AM 15 1945 38 10 40
AVERAGE 64 53 11
PRECIPITATION (IN)
YESTERDAY 0.06 0.34 2019 0.04 0.02 0.00
MONTH TO DATE 2.55 0.87 1.68 0.24
SINCE SEP 1 2.55 0.87 1.68 0.24
SINCE JAN 1 9.86 9.70 0.16 7.22
SNOWFALL (IN)
YESTERDAY 0.0 1.7 1985 0.1 -0.1 0.0
MONTH TO DATE 0.0 1.3 -1.3 0.0
SINCE SEP 1 0.0 1.3 -1.3 0.0
SINCE JUL 1 0.0 1.3 -1.3 0.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 1 12 -11 0
MONTH TO DATE 111 188 -77 86
SINCE SEP 1 111 188 -77 86
SINCE JUL 1 121 233 -112 124
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 17 29 -12 57
SINCE SEP 1 17 29 -12 57
SINCE JAN 1 467 441 26 532
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WIND (MPH)
HIGHEST WIND SPEED 30 HIGHEST WIND DIRECTION SW (220)
HIGHEST GUST SPEED 36 HIGHEST GUST DIRECTION SW (210)
AVERAGE WIND SPEED 10.1
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 83 12:00 AM
LOWEST 27 2:00 PM
AVERAGE 55
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THE CASPER WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 68 91 2024
MINIMUM TEMPERATURE (F) 37 18 1984
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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