661
CDUS45 KRIW 210733
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
133 AM MDT WED MAY 21 2025
...............................
..THE CASPER WY CLIMATE SUMMARY FOR MAY 20 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 65 2:02 PM 89 1954 69 -4 48
1964
MINIMUM 33 11:59 PM 24 2003 39 -6 41
AVERAGE 49 54 -5
PRECIPITATION (IN)
YESTERDAY T 0.81 1975 0.07 -0.07 0.22
MONTH TO DATE 0.72 1.44 -0.72 2.07
SINCE MAR 1 3.64 3.69 -0.05 3.86
SINCE JAN 1 4.36 4.74 -0.38 4.89
SNOWFALL (IN)
YESTERDAY MM 8.4 1975 0.1 MM 0.0
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
YESTERDAY 16 12 4 20
MONTH TO DATE 264 307 -43 324
SINCE MAR 1 1813 1896 -83 1850
SINCE JUL 1 6828 7258 -430 6805
COOLING
YESTERDAY 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 31 HIGHEST WIND DIRECTION NW (330)
HIGHEST GUST SPEED 43 HIGHEST GUST DIRECTION NW (320)
AVERAGE WIND SPEED 10.6
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 92 11:00 PM
LOWEST 24 2:00 PM
AVERAGE 58
......................................................
THE CASPER WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 69 87 1964
2006
MINIMUM TEMPERATURE (F) 39 26 2001
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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