508
CXUS55 KRIW 022240
CLMRIW
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
319 PM MST MON FEB 02 2026
...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR RIVERTON FOR THE MONTH OF
JANUARY 2026...
...OFFICIAL CLIMATE DATA FOR THE MONTH OF JANUARY 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 DRIER WITH RECORD WARMTH IN JANUARY.
THE AVERAGE TEMPERATURE FOR RIVERTON IN JANUARY WAS 29.4 DEGREES
WHICH WAS 10.2 DEGREES ABOVE NORMAL. IT WAS THE WARMEST JANUARY
SINCE RECORDS BEGAN IN 1996. THE WARMEST READING FOR THE MONTH WAS
60 DEGREES ON THE 13TH AND BROKE THE 2021 RECORD OF 55. SEVERAL
DAILY HIGH RECORDS WERE BROKEN AND ARE LISTED BELOW. THE COLDEST
READING WAS -12 DEGREE ON THE 26TH AND BROKE THE 2025 RECORD OF -11.
THE 24TH LOW OF -10 TIED THE 2008 RECORD.
DATENEW OLDYEAR
2ND 51 (T)512009,1997
3RD 49 (T)492012,2003
4TH 54 432006
5TH 50 491999
12TH54 (T)542022
14TH57 551999
15TH56 531999
31ST56 512009
PRECIPITATION FOR THE MONTH WAS 0.05 INCHES...WHICH IS 17 PERCENT OF
NORMAL. IT WAS THE 3RD DRIEST JANUARY ON RECORD. THE WETTEST 24-
HOURS WAS THE 25TH WHEN 0.04 INCHES FELL. NO PRECIPITATION OR
SNOWFALL RECORDS WERE BROKEN THIS MONTH.
SNOWFALL FOR THE MONTH WAS 0.6 INCHES. THE SNOWIEST 24-HOURS WAS ON
THE 25TH WHEN 0.4 INCHES FELL. THE HIGHEST WIND GUST WAS 58 MPH FROM
THE NORTHEAST AND OCCURRED ON THE 15TH.
..THE RIVERTON WY CLIMATE SUMMARY FOR THE MONTH OF JANUARY 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 63 01/01/1997
01/01/1997
LOW -31 01/31/2023
HIGHEST 60 01/13
LOWEST -12 01/26
AVG. MAXIMUM 41.8 30.6 11.2
AVG. MINIMUM 17.1 7.9 9.2
MEAN 29.4 19.2 10.2
DAYS MAX >= 90 0
DAYS MAX <= 32 5
DAYS MIN <= 32 29
DAYS MIN <= 0 3
PRECIPITATION (INCHES)
RECORD
MAXIMUM 1.46 2023
MINIMUM 0.01 1999
TOTALS 0.05 0.29 -0.24 0.42
DAILY AVG. 0.00 0.01 -0.01
DAYS >= .01 2
DAYS >= .10 0
DAYS >= .50 0
DAYS >= 1.00 0
GREATEST
24 HR. TOTAL 0.04 01/25 TO 01/25
STORM TOTAL 0.04
SNOWFALL (INCHES)
TOTALS 0.6 MM MM
SINCE 7/1 4.1 MM MM
SNOWDEPTH AVG. T
DAYS >= 1.0 0
DEGREE DAYS
HEATING TOTAL 1093 1418 -325
SINCE 7/1 3448 4723 -1275
COOLING TOTAL 0 0 0
SINCE 1/1 0 0 0
..........................................................
WIND (MPH)
AVERAGE WIND SPEED 9.4
RESULTANT WIND SPEED/DIRECTION 4/300
HIGHEST WIND SPEED/DIRECTION 40/020 DATE 01/15
HIGHEST GUST SPEED/DIRECTION 58/010 DATE 01/15
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.17
NUMBER OF DAYS FAIR 26
NUMBER OF DAYS PC 4
NUMBER OF DAYS CLOUDY 1
AVERAGE RH (PERCENT) 54
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 0 MIXED PRECIP 0
HEAVY RAIN 0 RAIN 0
LIGHT RAIN 1 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 1
LIGHT SNOW 5 SLEET 0
FOG 2 FOG W/VIS <= 1/4 MILE 0
HAZE 1
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
LOOKING AHEAD TO FEBRUARY 2026. THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 32 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 9 DEGREES. THE AVERAGE HIGH AT THE END OF THE MONTH IS 41 DEGREES
AND THE AVERAGE LOW TEMPERATURE IS 16. THE AVERAGE MONTHLY
PRECIPITATION IS 0.40 INCHES.
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