171
CDUS45 KRIW 010045
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
645 PM MDT SUN MAY 31 2026
...............................
..THE CASPER WY CLIMATE SUMMARY FOR MAY 31 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 75 4:31 PM 91 2020 73 2 81
MINIMUM 48 4:30 AM 27 1979 42 6 44
AVERAGE 62 58 4 63
PRECIPITATION (IN)
TODAY T 0.37 1995 0.07 -0.07 0.00
MONTH TO DATE 1.67 2.21 -0.54 1.28
SINCE MAR 1 3.11 4.46 -1.35 4.20
SINCE JAN 1 3.65 5.51 -1.86 4.92
SNOWFALL (IN)
TODAY MM 0.0 MM 0.0
MONTH TO DATE 2.5 2.6 -0.1 0.3
SINCE MAR 1 13.9 23.4 -9.5 16.0
SINCE JUL 1 29.6 71.7 -42.1 26.5
SNOW DEPTH MM
DEGREE DAYS
HEATING
TODAY 3 8 -5 2
MONTH TO DATE 362 410 -48 367
SINCE MAR 1 1568 1999 -431 1916
SINCE JUL 1 5745 7361 -1616 6931
COOLING
TODAY 0 0 0 0
MONTH TO DATE 1 4 -3 0
SINCE MAR 1 1 4 -3 0
SINCE JAN 1 1 4 -3 0
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 32 HIGHEST WIND DIRECTION NW (300)
HIGHEST GUST SPEED 41 HIGHEST GUST DIRECTION NW (300)
AVERAGE WIND SPEED 17.5
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 66
LOWEST 15
AVERAGE 41
......................................................
THE CASPER WY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 74 92 2025
MINIMUM TEMPERATURE (F) 42 30 1951
SUNRISE AND SUNSET
MAY 31 2026...........SUNRISE 5:30 AM MDT SUNSET 8:37 PM MDT
JUNE 1 2026..........SUNRISE 5:30 AM MDT SUNSET 8:38 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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