Climatological Report (Monthly)
Issued by NWS
Issued by NWS
677
CXUS55 KRIW 031753 CCA
CLMCPR
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1045 AM MST MON NOV 03 2025
...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR CASPER FOR THE MONTH OF
OCTOBER 2025...
...OFFICIAL CLIMATE DATA FOR THE MONTH OF OCTOBER 2025 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
...OCTOBER WAS WETTER AND WARMER THAN NORMAL FOR CASPER...
AVERAGE TEMPERATURE FOR CASPER IN OCTOBER WAS 47.3 DEGREES WHICH IS
2 DEGREE ABOVE NORMAL. THE WARMEST READING OF THE MONTH WAS 83
DEGREES ON THE 3RD. THE COLDEST READING FOR THE MONTH WAS 16 DEGREES
ON THE 28TH. NO TEMPERATURE RECORDS WERE BROKEN THIS MONTH.
TOTAL PRECIPITATION FOR THE MONTH WAS 1.56 INCHES...WHICH IS 131
PERCENT OF NORMAL. THE WETTEST 24-HOUR PERIOD DURING THE MONTH WAS
ON THE 15TH-16TH WITH 0.63 INCHES. NO PRECIPITATION OF SNOWFALL
RECORDS WERE BROKEN THIS MONTH.
THE SNOWFALL FOR THE MONTH WAS 1.3 INCHES WHICH IS 19 PERCENT OF
NORMAL. THE SNOWIEST 24-HOURS WAS ON THE 28TH WITH 1 INCH. THE
HIGHEST WIND GUST WAS 59 MPH FROM THE SOUTHWEST ON THE 19TH.
...THE CASPER WY CLIMATE SUMMARY FOR THE MONTH OF OCTOBER 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
..............................................................
TEMPERATURE (F)
RECORD
HIGH 87 10/05/1993
10/01/1992
LOW -9 10/30/2019
10/29/2019
11/24/2010
HIGHEST 83 10/03
LOWEST 16 10/28
AVG. MAXIMUM 61.9 59.7 2.2
AVG. MINIMUM 32.7 30.9 1.8
MEAN 47.3 45.3 2.0
DAYS MAX >= 90 0
DAYS MAX <= 32 0
DAYS MIN <= 32 16
DAYS MIN <= 0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 4.62 1998
MINIMUM T 1956
TOTALS 1.56 1.19 0.37 1.51
DAILY AVG. 0.05 0.04 0.01
DAYS >= .01 11
DAYS >= .10 5
DAYS >= .50 1
DAYS >= 1.00 0
GREATEST
24 HR. TOTAL 0.63 10/15 TO 10/16
STORM TOTAL 0.50
SNOWFALL (INCHES)
TOTALS 1.3 7.0 -5.7
SINCE 7/1 1.3 8.5 -7.2
SNOWDEPTH AVG. 0
DAYS >= 1.0 1
DEGREE DAYS
HEATING TOTAL 542 611 -69
SINCE 7/1 665 872 -207
COOLING TOTAL 0 1 -1
SINCE 1/1 467 443 24
..............................................................
WIND (MPH)
AVERAGE WIND SPEED 10.9
RESULTANT WIND SPEED/DIRECTION 7/240
HIGHEST WIND SPEED/DIRECTION 47/220 DATE 10/19
HIGHEST GUST SPEED/DIRECTION 59/230 DATE 10/19
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.23
NUMBER OF DAYS FAIR 22
NUMBER OF DAYS PC 8
NUMBER OF DAYS CLOUDY 1
AVERAGE RH (PERCENT) 60
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 2 MIXED PRECIP 0
HEAVY RAIN 0 RAIN 3
LIGHT RAIN 11 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 1
HEAVY SNOW 0 SNOW 2
LIGHT SNOW 3 SLEET 0
FOG 9 FOG W/VIS <= 1/4 MILE 1
HAZE 3
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
LOOKING AHEAD TO NOVEMBER 2025. THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 57 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.
$$