Climatological Report (Monthly)
Issued by NWS
Issued by NWS
494
CXUS55 KRIW 021901
CLMCPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1149 AM MST MON NOV 02 2026
...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR CASPER FOR THE MONTH OF
OCTOBER 2026...
...OFFICIAL CLIMATE DATA FOR THE MONTH OF OCTOBER 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 OCTOBER...
AVERAGE TEMPERATURE FOR CASPER IN OCTOBER WAS 52.7 DEGREES WHICH IS
7.4 DEGREES ABOVE NORMAL. IT WAS THE 2ND WARMEST OCTOBER ON RECORD.
THE WARMEST READING OF THE MONTH WAS 87 DEGREES ON THE 5TH AND TIED
THE 1993 DAILY RECORD AND THE ALL-TIME HIGH FOR OCTOBER. THE 6TH
HIGH OF 86 BROKE 84 FROM 1975. THE 8TH HIGH OF 82 BROKE THE 2020
RECORD OF 81. THE COLDEST READING FOR THE MONTH WAS 24 DEGREES ON
THE 25TH.
TOTAL PRECIPITATION FOR THE MONTH WAS 0.84 INCHES...WHICH IS 71
PERCENT OF NORMAL. THE WETTEST 24-HOUR PERIOD DURING THE MONTH WAS
ON THE 14TH WITH 0.61 INCHES AND BROKE THE 1957 RECORD OF 0.53
INCHES. THE HIGHEST WIND GUST WAS 64 MPH FROM THE SOUTHWEST ON THE
23RD.
...THE CASPER WY CLIMATE SUMMARY FOR THE MONTH OF OCTOBER 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 87 10/05/1993
10/01/1992
LOW -9 10/30/2019
10/29/2019
11/24/2010
HIGHEST 87R 10/05
LOWEST 24 10/25
AVG. MAXIMUM 68.3 59.7 8.6
AVG. MINIMUM 37.1 30.9 6.2
MEAN 52.7 45.3 7.4
DAYS MAX >= 90 0
DAYS MAX <= 32 0
DAYS MIN <= 32 8
DAYS MIN <= 0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 4.62 1998
MINIMUM T 1956
TOTALS 0.84 1.19 -0.35 1.56
DAILY AVG. 0.03 0.04 -0.01
DAYS >= .01 6
DAYS >= .10 2
DAYS >= .50 1
DAYS >= 1.00 0
GREATEST
24 HR. TOTAL 0.61 10/14 TO 10/14
STORM TOTAL 0.61
SNOWFALL (INCHES)
TOTALS 0.0 7.0 -7.0
SINCE 7/1 0.0 8.5 -8.5
SNOWDEPTH AVG. 0
DAYS >= 1.0 0
DEGREE DAYS
HEATING TOTAL 374 611 -237
SINCE 7/1 487 872 -385
COOLING TOTAL 2 1 1
SINCE 1/1 640 443 197
..............................................................
WIND (MPH)
AVERAGE WIND SPEED 10.6
RESULTANT WIND SPEED/DIRECTION 5/230
HIGHEST WIND SPEED/DIRECTION 52/210 DATE 10/23
HIGHEST GUST SPEED/DIRECTION 64/210 DATE 10/23
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.22
NUMBER OF DAYS FAIR 23
NUMBER OF DAYS PC 4
NUMBER OF DAYS CLOUDY 4
AVERAGE RH (PERCENT) 54
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 0 MIXED PRECIP 0
HEAVY RAIN 1 RAIN 1
LIGHT RAIN 8 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 5 FOG W/VIS <= 1/4 MILE 2
HAZE 0
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
LOOKING AHEAD TO NOVEMBER 2026. THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 53 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 26 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 39
DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 18.. THE AVERAGE
MONTHLY PRECIPITATION IS 0.64 INCHES. THE AVERAGE SNOWFALL IS 8.9
INCHES.
$$