Climatological Report (Monthly)
Issued by NWS
Issued by NWS
781
CXUS55 KRIW 031841
CLMCPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1229 PM MDT MON AUG 03 2026
...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR CASPER FOR THE MONTH OF
JULY 2026...
...OFFICIAL CLIMATE DATA FOR THE MONTH OF JULY 2026 WILL BE
AVAILABLE IN APPROXIMATELY 60 DAYS FROM THE NATIONAL CENTERS FOR
ENVIRONMENTAL INFORMATION (HTTP://WWW.NCDC.NOAA.GOV/CDO-
WEB/DATASETS). UNOFFICIAL ASOS DAILY SUMMARIES ARE AVAILABLE ON THE
INTERNET AT HTTP://WWW.WEATHER.GOV/CLIMATE/INDEX.PHP?WFO=RIW
...CASPER WAS WARMER AND DRIER THAN NORMAL IN JULY...
AVERAGE TEMPERATURE FOR CASPER IN JULY WAS 75.8 DEGREES WHICH IS 4.8
DEGREES ABOVE NORMAL. IT WAS THE SECOND WARMEST JULY ON RECORD. THE
WARMEST READING OF THE MONTH WAS 103 DEGREES ON THE 12TH. THE 20TH
HIGH OF 99 TIED 2005 AND 2012. THE 25TH HIT 102 AND BROKE THE 2024
RECORD OF 100. THE 26TH HIGH OF 102 BROKE THE 2008 AND 2010 RECORDS
OF 98 DEGREES. THE COLDEST READING FOR THE MONTH WAS 46 DEGREES ON
THE 2ND AND THE 10TH.
TOTAL PRECIPITATION FOR THE MONTH WAS 0.13 INCHES...WHICH IS 11
PERCENT OF NORMAL. IT WAS THE 4TH DRIEST JULY ON RECORD. THE WETTEST
24-HOUR PERIOD DURING THE MONTH WAS ON THE 22ND-23RD WITH 0.07
INCHES. NO PRECIPITATION RECORDS WERE BROKEN THIS MONTH. THE HIGHEST
WIND GUST WAS 43 MPH FROM THE SOUTHWEST ON THE 8TH.
...THE CASPER WY CLIMATE SUMMARY FOR THE MONTH OF JULY 2026...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1939 TO 2026
WEATHER OBSERVED NORMAL DEPART LAST YEAR`S
VALUE DATE(S) VALUE FROM VALUE
NORMAL
..............................................................
TEMPERATURE (F)
RECORD
HIGH 104 07/29/2006
07/16/2005
07/12/1954
LOW 30 07/04/1972
HIGHEST 103 07/12
LOWEST 46 07/02
07/10
AVG. MAXIMUM 94.6R 89.0 5.6
AVG. MINIMUM 57.0 53.0 4.0
MEAN 75.8 71.0 4.8
DAYS MAX >= 90 27
DAYS MAX <= 32 0
DAYS MIN <= 32 0
DAYS MIN <= 0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 3.54 2007
MINIMUM 0.02 2020
TOTALS 0.13 1.19 -1.06 1.14
DAILY AVG. 0.00 0.04 -0.04
DAYS >= .01 4
DAYS >= .10 0
DAYS >= .50 0
DAYS >= 1.00 0
GREATEST
24 HR. TOTAL 0.07 07/22 TO 07/23
STORM TOTAL 0.05
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 0 14 -14
SINCE 7/1 0 9 -9
COOLING TOTAL 342 200 142
SINCE 1/1 378 255 123
..............................................................
WIND (MPH)
AVERAGE WIND SPEED 8.5
RESULTANT WIND SPEED/DIRECTION 1/330
HIGHEST WIND SPEED/DIRECTION 32/210 DATE 07/08
HIGHEST GUST SPEED/DIRECTION 43/210 DATE 07/08
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.08
NUMBER OF DAYS FAIR 30
NUMBER OF DAYS PC 1
NUMBER OF DAYS CLOUDY 0
AVERAGE RH (PERCENT) 44
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 4 MIXED PRECIP 0
HEAVY RAIN 0 RAIN 1
LIGHT RAIN 6 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 1 FOG W/VIS <= 1/4 MILE 0
HAZE 3
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
LOOKING AHEAD TO AUGUST 2026. THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 90 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 55 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 83
DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 47. THE AVERAGE MONTHLY
PRECIPITATION IS 0.79 INCHES.
$$