117
CDUS45 KRIW 010728
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
128 AM MDT MON JUN 01 2026
...............................
..THE CASPER WY CLIMATE SUMMARY FOR MAY 31 2026
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)
YESTERDAY
MAXIMUM 75 MM 91 2020 73 2 81
MINIMUM 43 MM 27 1979 42 1 44
AVERAGE 59 58 1
PRECIPITATION (IN)
YESTERDAY 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)
YESTERDAY 0.0 0.0 2021 0.0 0.0 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 0
DEGREE DAYS
HEATING
YESTERDAY 6 8 -2 2
MONTH TO DATE 365 410 -45 367
SINCE MAR 1 1571 1999 -428 1916
SINCE JUL 1 5748 7361 -1613 6931
COOLING
YESTERDAY 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
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WIND (MPH)
HIGHEST WIND SPEED 27 HIGHEST WIND DIRECTION NE (30)
HIGHEST GUST SPEED 41 HIGHEST GUST DIRECTION NE (30)
AVERAGE WIND SPEED 16.1
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 11:00 PM
LOWEST 15 5:00 PM
AVERAGE 54
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THE CASPER WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 74 92 2025
MINIMUM TEMPERATURE (F) 42 30 1951
SUNRISE AND SUNSET
JUNE 1 2026..........SUNRISE 5:30 AM MDT SUNSET 8:38 PM MDT
JUNE 2 2026..........SUNRISE 5:29 AM MDT SUNSET 8:39 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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