156
CDUS45 KRIW 220045
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
645 PM MDT WED MAY 21 2025
...............................
..THE CASPER WY CLIMATE SUMMARY FOR MAY 21 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 61 3:06 PM 87 1964 69 -8 46
2006
MINIMUM 31 4:22 AM 26 2001 39 -8 32
AVERAGE 46 54 -8 39
PRECIPITATION (IN)
TODAY 0.02 1.04 1962 0.08 -0.06 0.37
MONTH TO DATE 0.74 1.52 -0.78 2.44
SINCE MAR 1 3.66 3.77 -0.11 4.23
SINCE JAN 1 4.38 4.82 -0.44 5.26
SNOWFALL (IN)
TODAY MM 0.0 MM T
MONTH TO DATE 0.3 2.3 -2.0 3.9
SINCE MAR 1 16.0 23.1 -7.1 13.2
SINCE JUL 1 26.5 71.4 -44.9 42.5
SNOW DEPTH MM
DEGREE DAYS
HEATING
TODAY 19 11 8 26
MONTH TO DATE 283 318 -35 350
SINCE MAR 1 1832 1907 -75 1876
SINCE JUL 1 6847 7269 -422 6831
COOLING
TODAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE MAR 1 0 0 0 0
SINCE JAN 1 0 0 0 0
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 30 HIGHEST WIND DIRECTION N (10)
HIGHEST GUST SPEED 38 HIGHEST GUST DIRECTION N (10)
AVERAGE WIND SPEED 7.2
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 92
LOWEST 36
AVERAGE 64
......................................................
THE CASPER WY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 69 86 1980
2006
MINIMUM TEMPERATURE (F) 39 22 2022
SUNRISE AND SUNSET
MAY 21 2025...........SUNRISE 5:37 AM MDT SUNSET 8:29 PM MDT
MAY 22 2025...........SUNRISE 5:36 AM MDT SUNSET 8:30 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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