Climatological Report (Monthly)
Issued by NWS
Issued by NWS
219
CXUS55 KRIW 012058
CLMCPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
258 PM MDT MON SEP 01 2025
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...THE CASPER WY CLIMATE SUMMARY FOR THE MONTH OF AUGUST 2025...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1939 TO 2025
WEATHER OBSERVED NORMAL DEPART LAST YEAR`S
VALUE DATE(S) VALUE FROM VALUE
NORMAL
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TEMPERATURE (F)
RECORD
HIGH 102 08/05/1979
LOW 29 08/23/2015
HIGHEST 99 08/20
LOWEST 39 08/09
AVG. MAXIMUM 87.2 86.7 0.5
AVG. MINIMUM 51.3 51.4 -0.1
MEAN 69.2 69.0 0.2
DAYS MAX >= 90 12
DAYS MAX <= 32 0
DAYS MIN <= 32 0
DAYS MIN <= 0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 2.79 1941
MINIMUM 0.02 1950
TOTALS 0.72 0.79 -0.07 0.39
DAILY AVG. 0.02 0.03 -0.01
DAYS >= .01 5
DAYS >= .10 2
DAYS >= .50 0
DAYS >= 1.00 0
GREATEST
24 HR. TOTAL 0.44 08/27 TO 08/27
STORM TOTAL 0.44
SNOWFALL (INCHES)
TOTALS 0.0 0.0 0.0
SINCE 7/1 0.0 0.0 0.0
SNOWDEPTH AVG. 0
DAYS >= 1.0 0
DEGREE DAYS
HEATING TOTAL 5 31 -26
SINCE 7/1 10 42 -32
COOLING TOTAL 148 157 -9
SINCE 1/1 450 412 38
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WIND (MPH)
AVERAGE WIND SPEED 8.1
RESULTANT WIND SPEED/DIRECTION 1/310
HIGHEST WIND SPEED/DIRECTION 38/270 DATE 08/15
HIGHEST GUST SPEED/DIRECTION 54/280 DATE 08/15
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.15
NUMBER OF DAYS FAIR 28
NUMBER OF DAYS PC 2
NUMBER OF DAYS CLOUDY 1
AVERAGE RH (PERCENT) 49
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 5 MIXED PRECIP 0
HEAVY RAIN 0 RAIN 1
LIGHT RAIN 9 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 3 FOG W/VIS <= 1/4 MILE 2
HAZE 4
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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