Climatological Report (Monthly)
Issued by NWS Riverton, WY
Issued by NWS Riverton, WY
275
CXUS55 KRIW 021906
CLMRIW
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1149 AM MST MON NOV 02 2026
...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR RIVERTON 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
...RIVERTON WAS WARMER AND DRIER THAN NORMAL IN OCTOBER...
THE AVERAGE TEMPERATURE FOR RIVERTON IN OCTOBER WAS 51.1 DEGREES
WHICH WAS 6.4 DEGREES ABOVE NORMAL. IT WAS THE SECOND WARMEST
OCTOBER ON RECORD. THE WARMEST READING FOR THE MONTH WAS 83 DEGREES
ON THE 5TH AND 6TH. THE 5TH BROKE THE 1996 AND 1997 RECORDS OF 77.
THE 6TH BROKE 82 DEGREES FROM 2020. THE 7TH HIGH OF 78 BROKE 77 FROM
2020. THE 8TH HIGH OF 80 TIED 2020. THE COLDEST READING WAS 25
DEGREES ON THE 29TH.
PRECIPITATION FOR THE MONTH WAS 0.53 INCHES...WHICH IS 64 PERCENT OF
NORMAL. THE WETTEST 24-HOURS WAS THE 13TH-14TH WHEN 0.27 INCHES
FELL. THE 14TH HAD 0.25 INCHES AND BROKE THE 2017 RECORD OF 0.12.
THE HIGHEST WIND GUST WAS 52 MPH FROM THE SOUTHWEST ON THE 10TH.
...THE RIVERTON WY CLIMATE SUMMARY FOR THE MONTH OF OCTOBER 2026...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1995 TO 2026
WEATHER OBSERVED NORMAL DEPART LAST YEAR`S
VALUE DATE(S) VALUE FROM VALUE
NORMAL
..............................................................
TEMPERATURE (F)
RECORD
HIGH 84 10/01/2005
LOW -9 10/30/2019
HIGHEST 83 10/05
10/06
LOWEST 25 10/29
AVG. MAXIMUM 63.7 58.0 5.7
AVG. MINIMUM 38.5 31.5 7.0
MEAN 51.1 44.7 6.4
DAYS MAX >= 90 0
DAYS MAX <= 32 0
DAYS MIN <= 32 8
DAYS MIN <= 0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 2.83 1998
MINIMUM 0.03 2001
TOTALS 0.53 0.83 -0.30 1.43
DAILY AVG. 0.02 0.03 -0.01
DAYS >= .01 6
DAYS >= .10 2
DAYS >= .50 0
DAYS >= 1.00 0
GREATEST
24 HR. TOTAL 0.27 10/13 TO 10/14
STORM TOTAL 0.25
SNOWFALL (INCHES)
TOTALS 0.0 MM MM
SINCE 7/1 0.0 MM MM
SNOWDEPTH AVG. 0
DAYS >= 1.0 0
DEGREE DAYS
HEATING TOTAL 427 628 -201
SINCE 7/1 514 871 -357
COOLING TOTAL 4 0 4
SINCE 1/1 761 499 262
..............................................................
WIND (MPH)
AVERAGE WIND SPEED 6.9
RESULTANT WIND SPEED/DIRECTION 2/320
HIGHEST WIND SPEED/DIRECTION 40/230 DATE 10/10
HIGHEST GUST SPEED/DIRECTION 52/230 DATE 10/10
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.20
NUMBER OF DAYS FAIR 25
NUMBER OF DAYS PC 3
NUMBER OF DAYS CLOUDY 3
AVERAGE RH (PERCENT) 58
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 0 MIXED PRECIP 0
HEAVY RAIN 0 RAIN 3
LIGHT RAIN 7 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 8 FOG W/VIS <= 1/4 MILE 1
HAZE 4
- 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 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.
$$