Climatological Report (Daily)
Issued by NWS
Issued by NWS
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790
CDUS45 KRIW 170730
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
130 AM MDT SUN AUG 17 2025
...................................
...THE CASPER WY CLIMATE SUMMARY FOR AUGUST 16 2025...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1939 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 91 4:08 PM 96 1982 87 4 92
1995
2002
MINIMUM 56 11:59 PM 38 2009 52 4 50
AVERAGE 74 69 5
PRECIPITATION (IN)
YESTERDAY 0.00 0.19 1992 0.02 -0.02 T
MONTH TO DATE 0.22 0.47 -0.25 0.19
SINCE JUN 1 1.89 3.00 -1.11 1.52
SINCE JAN 1 6.81 8.51 -1.70 6.78
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 4 4 0 6
SINCE JUN 1 100 144 -44 76
SINCE JUL 1 9 18 -9 22
COOLING
YESTERDAY 9 5 4 6
MONTH TO DATE 89 99 -10 96
SINCE JUN 1 391 350 41 384
SINCE JAN 1 391 354 37 387
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 28 HIGHEST WIND DIRECTION SW (220)
HIGHEST GUST SPEED 38 HIGHEST GUST DIRECTION SW (220)
AVERAGE WIND SPEED 12.5
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
RELATIVE HUMIDITY (PERCENT)
HIGHEST 64 11:00 PM
LOWEST 16 4:00 PM
AVERAGE 40
..........................................................
THE CASPER WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 87 97 2013
2020
MINIMUM TEMPERATURE (F) 51 36 2002
2009
SUNRISE AND SUNSET
AUGUST 17 2025........SUNRISE 6:15 AM MDT SUNSET 8:04 PM MDT
AUGUST 18 2025........SUNRISE 6:16 AM MDT SUNSET 8:03 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$