Climatological Report (Monthly)
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
839
CXUS55 KRIW 032313 CCA
CLMRIW
CLIMATE REPORT...CORRECTED
NATIONAL WEATHER SERVICE RIVERTON WY
1045 AM MST MON NOV 03 2025
...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR RIVERTON 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
...RIVERTON WAS WARMER AND WETTER THAN NORMAL IN OCTOBER....
THE AVERAGE TEMPERATURE FOR RIVERTON IN OCTOBER WAS 46.8 DEGREES
WHICH WAS 2.1 DEGREES ABOVE NORMAL. THE WARMEST READING FOR THE
MONTH WAS 82 DEGREES ON THE 3RD AND TIED THE 2010 RECORD. THE
COLDEST READING WAS 18 DEGREES ON THE 29TH.
PRECIPITATION FOR THE MONTH WAS 1.43 INCHES...WHICH IS 172 PERCENT
OF NORMAL. IT WAS THE 7TH WETTEST OCTOBER SINCE RECORDS BEGAN IN
1998. THE WETTEST 24 HOURS WAS THE 4TH-5TH WHEN 0.78 INCHES FELL.
THE 5TH HAD 0.69 INCHES AND BROKE THE 2018 RECORD OF 0.11 INCHES.
SNOWFALL FOR THE MONTH WAS JUST A TRACE. BOTH THE 5TH AND 6TH
RECEIVED A TRACE OF SNOW. THE HIGHEST WIND GUST WAS 56 MPH FROM THE
NORTHWEST AND OCCURRED ON THE 19TH.
...THE RIVERTON WY CLIMATE SUMMARY FOR THE MONTH OF OCTOBER 2025...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1995 TO 2025
WEATHER OBSERVED NORMAL DEPART LAST YEAR`S
VALUE DATE(S) VALUE FROM VALUE
NORMAL
..............................................................
TEMPERATURE (F)
RECORD
HIGH 83 10/02/2024
LOW -9 10/30/2019
HIGHEST 82 10/03
LOWEST 18 10/29
AVG. MAXIMUM 59.7 58.0 1.7
AVG. MINIMUM 33.9 31.5 2.4
MEAN 46.8 44.7 2.1
DAYS MAX >= 90 0
DAYS MAX <= 32 0
DAYS MIN <= 32 13
DAYS MIN <= 0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 2.83 1998
MINIMUM 0.03 2001
TOTALS 1.43 0.83 0.60 0.57
DAILY AVG. 0.05 0.03 0.02
DAYS >= .01 5
DAYS >= .10 3
DAYS >= .50 1
DAYS >= 1.00 0
GREATEST
24 HR. TOTAL 0.78 10/04 TO 10/05
STORM TOTAL 0.69
SNOWFALL (INCHES)
TOTALS T MM MM
SINCE 7/1 T MM MM
SNOWDEPTH AVG. 0
DAYS >= 1.0 0
DEGREE DAYS
HEATING TOTAL 558 628 -70
SINCE 7/1 658 871 -213
COOLING TOTAL 0 0 0
SINCE 1/1 611 499 112
..............................................................
WIND (MPH)
AVERAGE WIND SPEED 8.4
RESULTANT WIND SPEED/DIRECTION 3/300
HIGHEST WIND SPEED/DIRECTION 40/290 DATE 10/20
HIGHEST GUST SPEED/DIRECTION 56/300 DATE 10/19
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.16
NUMBER OF DAYS FAIR 23
NUMBER OF DAYS PC 4
NUMBER OF DAYS CLOUDY 1
AVERAGE RH (PERCENT) 57
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 2 MIXED PRECIP 0
HEAVY RAIN 1 RAIN 3
LIGHT RAIN 9 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 1 SLEET 0
FOG 3 FOG W/VIS <= 1/4 MILE 0
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 2025. THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 50 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 25 DEGREES. THE AVERAGE HIGH AT THE END OF THE MONTH IS 35
DEGREES AND THE AVERAGE LOW TEMPERATURE IS 13. THE AVERAGE MONTHLY
PRECIPITATION IS 0.34 INCHES.
$$