Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS45 KRIW 160045
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
645 PM MDT SAT AUG 15 2026
...................................
...THE CASPER WY CLIMATE SUMMARY FOR AUGUST 15 2026...
VALID TODAY AS OF 0600 PM LOCAL TIME.
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)
TODAY
MAXIMUM 78 1:20 PM 95 1992 87 -9 93
1994
2015
MINIMUM 53 1:56 PM 41 1974 52 1 49
AVERAGE 66 70 -4 71
PRECIPITATION (IN)
TODAY 0.47R 0.46 2009 0.03 0.44 T
MONTH TO DATE 1.73 0.45 1.28 0.22
SINCE JUN 1 2.41 2.98 -0.57 1.89
SINCE JAN 1 6.06 8.49 -2.43 6.81
SNOWFALL (IN)
TODAY MM 0.0 MM 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 MM
DEGREE DAYS
HEATING
TODAY 0 1 -1 0
MONTH TO DATE 5 3 2 4
SINCE JUN 1 97 143 -46 100
SINCE JUL 1 5 17 -12 9
COOLING
TODAY 1 5 -4 6
MONTH TO DATE 108 94 14 80
SINCE JUN 1 485 345 140 382
SINCE JAN 1 486 349 137 382
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 35 HIGHEST WIND DIRECTION W (290)
HIGHEST GUST SPEED 48 HIGHEST GUST DIRECTION W (290)
AVERAGE WIND SPEED 6.7
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
THUNDERSTORM
HEAVY RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97
LOWEST 40
AVERAGE 69
..........................................................
THE CASPER WY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 87 96 1982
1995
2002
MINIMUM TEMPERATURE (F) 52 38 2009
SUNRISE AND SUNSET
AUGUST 15 2026........SUNRISE 6:12 AM MDT SUNSET 8:08 PM MDT
AUGUST 16 2026........SUNRISE 6:13 AM MDT SUNSET 8:06 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$