784
CXUS55 KRIW 011526
CLMCPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
919 AM MDT WED JUL 01 2026
...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR CASPER FOR THE MONTH OF
JUNE 2026...
...OFFICIAL CLIMATE DATA FOR THE MONTH OF JUNE 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 JUNE
AVERAGE TEMPERATURE FOR CASPER IN JUNE WAS 62.9 DEGREES WHICH IS 0.4
DEGREES ABOVE NORMAL. THE WARMEST READING OF THE MONTH WAS 96
DEGREES ON THE 6TH. THIS BROKE THE 2006 RECORD OF 94. THE COLDEST
READING FOR THE MONTH WAS 30 DEGREES ON THE 15TH. THIS BROKE THE
1945 RECORD OF 35.
TOTAL PRECIPITATION FOR THE MONTH WAS 0.55 INCHES...WHICH IS 41
PERCENT OF NORMAL. THE WETTEST 24-HOUR PERIOD DURING THE MONTH WAS
ON THE 24TH-25TH WITH 0.48 INCHES. NO PRECIPITATION RECORDS WERE
BROKEN THIS MONTH. THE HIGHEST WIND GUST WAS 81 MPH FROM THE
SOUTHWEST ON THE 20TH.
..THE CASPER WY CLIMATE SUMMARY FOR THE MONTH OF JUNE 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 102 06/30/1990
06/24/1988
LOW 25 06/10/2019
HIGHEST 96 06/06
LOWEST 30 06/15
AVG. MAXIMUM 81.0 79.6 1.4
AVG. MINIMUM 44.7 45.4 -0.7
MEAN 62.8 62.5 0.3
DAYS MAX >= 90 5
DAYS MAX <= 32 0
DAYS MIN <= 32 1
DAYS MIN <= 0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 4.71 2003
MINIMUM 0.03 1956
TOTALS 0.55 1.34 -0.79 0.53
DAILY AVG. 0.02 0.04 -0.02
DAYS >= .01 4
DAYS >= .10 1
DAYS >= .50 0
DAYS >= 1.00 0
GREATEST
24 HR. TOTAL 0.48 06/25 TO 06/25
STORM TOTAL 0.48
SNOWFALL (INCHES)
TOTALS 0.0 0.1 -0.1
SINCE 7/1 30.1 71.8 -41.7
SNOWDEPTH AVG. 0
DAYS >= 1.0 0
DEGREE DAYS
HEATING TOTAL 92 126 -34
SINCE 7/1 5840 7487 -1647
COOLING TOTAL 35 51 -16
SINCE 1/1 36 55 -19
..........................................................
WIND (MPH)
AVERAGE WIND SPEED 11.7
RESULTANT WIND SPEED/DIRECTION 3/260
HIGHEST WIND SPEED/DIRECTION 54/240 DATE 06/20
HIGHEST GUST SPEED/DIRECTION 81/240 DATE 06/20
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.19
NUMBER OF DAYS FAIR 23
NUMBER OF DAYS PC 7
NUMBER OF DAYS CLOUDY 0
AVERAGE RH (PERCENT) 47
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 4 MIXED PRECIP 0
HEAVY RAIN 0 RAIN 3
LIGHT RAIN 10 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 2 FOG W/VIS <= 1/4 MILE 0
HAZE 2
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
LOOKING AHEAD TO JULY 2026. THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 86 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 50 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 90
DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 55. THE AVERAGE MONTHLY
PRECIPITATION IS 1.19 INCHES.
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