970
CDUS45 KRIW 290045
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
645 PM MDT MON SEP 28 2026
...............................
..THE CASPER WY CLIMATE SUMMARY FOR SEPTEMBER 28 2026
VALID TODAY AS OF 0600 PM LOCAL TIME.
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1939 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
TODAY
MAXIMUM 66 2:03 PM 92 2010 69 -3 80
MINIMUM 50 4:40 AM 15 1945 38 12 48
AVERAGE 58 53 5 64
PRECIPITATION (IN)
TODAY 0.07 0.34 2019 0.04 0.03 0.06
MONTH TO DATE 0.76 0.87 -0.11 2.55
SINCE SEP 1 0.76 0.87 -0.11 2.55
SINCE JAN 1 7.10 9.70 -2.60 9.86
SNOWFALL (IN)
TODAY MM 0.1 MM 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 MM
DEGREE DAYS
HEATING
TODAY 7 12 -5 1
MONTH TO DATE 89 188 -99 111
SINCE SEP 1 89 188 -99 111
SINCE JUL 1 94 233 -139 121
COOLING
TODAY 0 0 0 0
MONTH TO DATE 45 29 16 17
SINCE SEP 1 45 29 16 17
SINCE JAN 1 638 441 197 467
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 24 HIGHEST WIND DIRECTION SW (220)
HIGHEST GUST SPEED 31 HIGHEST GUST DIRECTION SW (210)
AVERAGE WIND SPEED 11.8
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
THUNDERSTORM
RAIN
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 96
LOWEST 54
AVERAGE 75
......................................................
THE CASPER WY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 68 91 2024
MINIMUM TEMPERATURE (F) 37 18 1984
SUNRISE AND SUNSET
SEPTEMBER 28 2026.....SUNRISE 7:00 AM MDT SUNSET 6:52 PM MDT
SEPTEMBER 29 2026.....SUNRISE 7:01 AM MDT SUNSET 6:50 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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