410
CDUS45 KRIW 220728
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
128 AM MDT MON JUN 22 2026
...............................
..THE CASPER WY CLIMATE SUMMARY FOR JUNE 21 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 79 2:32 PM 100 2016 82 -3 95
MINIMUM 44 3:39 AM 37 1960 47 -3 51
2012
AVERAGE 62 64 -2
PRECIPITATION (IN)
YESTERDAY 0.01 0.34 1996 0.04 -0.03 0.00
MONTH TO DATE 0.05 0.99 -0.94 0.52
SINCE JUN 1 0.05 0.99 -0.94 0.52
SINCE JAN 1 3.70 6.50 -2.80 5.44
SNOWFALL (IN)
YESTERDAY 0.0 0.0 2020 0.0 0.0 0.0
MONTH TO DATE 0.0 0.1 -0.1 0.0
SINCE JUN 1 0.0 0.1 -0.1 0.0
SINCE JUL 1 29.6 71.8 -42.2 26.5
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 3 3 0 0
MONTH TO DATE 84 108 -24 73
SINCE JUN 1 84 108 -24 73
SINCE JUL 1 5832 7468 -1636 7004
COOLING
YESTERDAY 0 2 -2 8
MONTH TO DATE 16 26 -10 51
SINCE JUN 1 16 26 -10 51
SINCE JAN 1 17 30 -13 51
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION E (90)
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION N (340)
AVERAGE WIND SPEED 8.6
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 4:00 AM
LOWEST 29 3:00 PM
AVERAGE 60
......................................................
THE CASPER WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 82 98 1988
MINIMUM TEMPERATURE (F) 47 34 1989
SUNRISE AND SUNSET
JUNE 22 2026..........SUNRISE 5:27 AM MDT SUNSET 8:48 PM MDT
JUNE 23 2026..........SUNRISE 5:28 AM MDT SUNSET 8:49 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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