Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS45 KRIW 210732
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
132 AM MDT TUE JUL 21 2026
...................................
...THE CASPER WY CLIMATE SUMMARY FOR JULY 20 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 99R 4:12 PM 99 2005 90 9 95
2012
MINIMUM 60 5:11 AM 43 1972 54 6 57
2015
AVERAGE 80 72 8
PRECIPITATION (IN)
YESTERDAY 0.00 0.80 1990 0.04 -0.04 0.00
MONTH TO DATE 0.05 0.78 -0.73 0.45
SINCE JUN 1 0.60 2.12 -1.52 0.98
SINCE JAN 1 4.25 7.63 -3.38 5.90
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 0 0 0
MONTH TO DATE 0 9 -9 5
SINCE JUN 1 92 135 -43 96
SINCE JUL 1 0 9 -9 5
COOLING
YESTERDAY 15 7 8 11
MONTH TO DATE 195 116 79 143
SINCE JUN 1 230 167 63 218
SINCE JAN 1 231 171 60 218
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 25 HIGHEST WIND DIRECTION NE (50)
HIGHEST GUST SPEED 33 HIGHEST GUST DIRECTION N (10)
AVERAGE WIND SPEED 10.0
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 64 4:00 AM
LOWEST 14 3:00 PM
AVERAGE 39
..........................................................
THE CASPER WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 90 100 1982
MINIMUM TEMPERATURE (F) 54 39 1949
SUNRISE AND SUNSET
JULY 21 2026..........SUNRISE 5:46 AM MDT SUNSET 8:38 PM MDT
JULY 22 2026..........SUNRISE 5:47 AM MDT SUNSET 8:37 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$