Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS45 KRIW 180733
CLICPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
133 AM MDT MON AUG 18 2025
...................................
...THE CASPER WY CLIMATE SUMMARY FOR AUGUST 17 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 88 3:54 PM 97 2013 87 1 96
2020
MINIMUM 55 5:02 AM 36 2002 51 4 45
2009
AVERAGE 72 69 3
PRECIPITATION (IN)
YESTERDAY 0.01 1.00 2003 0.02 -0.01 T
MONTH TO DATE 0.23 0.49 -0.26 0.19
SINCE JUN 1 1.90 3.02 -1.12 1.52
SINCE JAN 1 6.82 8.53 -1.71 6.78
SNOWFALL (IN)
YESTERDAY 0.0 T 2022 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 5 -1 6
SINCE JUN 1 100 145 -45 76
SINCE JUL 1 9 19 -10 22
COOLING
YESTERDAY 7 5 2 6
MONTH TO DATE 96 104 -8 102
SINCE JUN 1 398 355 43 390
SINCE JAN 1 398 359 39 393
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 26 HIGHEST WIND DIRECTION W (260)
HIGHEST GUST SPEED 36 HIGHEST GUST DIRECTION W (260)
AVERAGE WIND SPEED 9.2
SKY COVER
POSSIBLE SUNSHINE MM
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 67 1:00 AM
LOWEST 16 4:00 PM
AVERAGE 42
..........................................................
THE CASPER WY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 87 99 1986
MINIMUM TEMPERATURE (F) 51 37 2009
SUNRISE AND SUNSET
AUGUST 18 2025........SUNRISE 6:16 AM MDT SUNSET 8:03 PM MDT
AUGUST 19 2025........SUNRISE 6:17 AM MDT SUNSET 8:01 PM MDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$