Climatological Report (Daily)
Issued by NWS
Issued by NWS
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583
CDUS45 KRIW 310731
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
131 AM MDT FRI JUL 31 2026
...................................
...THE CASPER WY CLIMATE SUMMARY FOR JULY 30 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 89 3:00 PM 101 2006 90 -1 84
MINIMUM 57 11:19 PM 38 1971 55 2 53
AVERAGE 73 72 1
PRECIPITATION (IN)
YESTERDAY 0.00 0.84 1985 0.04 -0.04 0.18
MONTH TO DATE 0.13 1.16 -1.03 1.13
SINCE JUN 1 0.68 2.50 -1.82 1.66
SINCE JAN 1 4.33 8.01 -3.68 6.58
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 8 8 0 4
MONTH TO DATE 335 195 140 223
SINCE JUN 1 370 246 124 298
SINCE JAN 1 371 250 121 298
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 21 HIGHEST WIND DIRECTION N (10)
HIGHEST GUST SPEED 29 HIGHEST GUST DIRECTION N (10)
AVERAGE WIND SPEED 8.2
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 75 5:00 AM
LOWEST 25 3:00 PM
AVERAGE 50
..........................................................
THE CASPER WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 90 99 1988
MINIMUM TEMPERATURE (F) 55 42 1968
SUNRISE AND SUNSET
JULY 31 2026..........SUNRISE 5:56 AM MDT SUNSET 8:28 PM MDT
AUGUST 1 2026........SUNRISE 5:57 AM MDT SUNSET 8:27 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$