181
CDUS45 KRIW 200729
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
129 AM MDT THU AUG 20 2026
...............................
..THE CASPER WY CLIMATE SUMMARY FOR AUGUST 19 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 88 4:26 PM 97 2019 86 2 96
MINIMUM 53 5:43 AM 37 2002 51 2 53
AVERAGE 71 68 3
PRECIPITATION (IN)
YESTERDAY 0.00 1.35 1979 0.03 -0.03 0.00
MONTH TO DATE 1.88 0.54 1.34 0.23
SINCE JUN 1 2.56 3.07 -0.51 1.90
SINCE JAN 1 6.21 8.58 -2.37 6.82
SNOWFALL (IN)
YESTERDAY 0.0 0.0 2020 0.0 0.0 0.0
MONTH TO DATE 0.0 0.0 0.0 0.0
SINCE JUN 1 0.0 0.1 -0.1 0.0
SINCE JUL 1 0.0 0.0 0.0 0.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 0 1 -1 0
MONTH TO DATE 5 7 -2 4
SINCE JUN 1 97 147 -50 100
SINCE JUL 1 5 21 -16 9
COOLING
YESTERDAY 6 5 1 10
MONTH TO DATE 127 114 13 113
SINCE JUN 1 504 365 139 415
SINCE JAN 1 505 369 136 415
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WIND (MPH)
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION NW (300)
HIGHEST GUST SPEED 31 HIGHEST GUST DIRECTION NW (310)
AVERAGE WIND SPEED 8.6
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 87 1:00 AM
LOWEST 14 4:00 PM
AVERAGE 51
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THE CASPER WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 86 99 2025
MINIMUM TEMPERATURE (F) 51 38 2016
SUNRISE AND SUNSET
AUGUST 20 2026........SUNRISE 6:18 AM MDT SUNSET 8:00 PM MDT
AUGUST 21 2026........SUNRISE 6:19 AM MDT SUNSET 7:58 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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