793
CXUS55 KRIW 022236
CLMP60
CLIMATE REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
319 PM MST MON FEB 02 2026
...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR LAKE YELLOWSTONE FOR THE
MONTH OF JANUARY 2026...
...OFFICIAL CLIMATE DATA FOR THE MONTH OF JANUARY 2026 WILL BE
AVAILABLE APPROXIMATELY IN 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
..LAKE YELLOWSTONE WAS WARMER AND DRIER IN JANUARY
AVERAGE TEMPERATURE FOR LAKE YELLOWSTONE IN JANUARY WAS 16.3 DEGREES
WHICH IS 4.3 DEGREES ABOVE NORMAL. IT WAS THE 3RD WARMEST JANUARY
SINCE RECORDS BEGAN IN 1998. THE WARMEST READING OF THE MONTH WAS 39
DEGREES ON THE 31ST AND BROKE THE 2003 RECORD OF 37. THE 2ND HIT 24
AND BROKE THE 2006 AND 2010 RECORD OF 28. THE 3RD HIGH OF 35 TIED
2012. THE 13TH HIT 36 AND BROKE THE 2021 RECORD OF 33. AND THE 15TH
HIGH OF 35 BROKE 34 DEGREES FROM 2000. THE COLDEST READING OF THE
MONTH WAS -17 DEGREES ON THE 24TH.
TOTAL PRECIPITATION AT LAKE YELLOWSTONE WAS 1.61 INCHES...WHICH WAS
89 PERCENT OF NORMAL. THE WETTEST 24-HOUR PERIOD DURING THE MONTH
WAS THE 7TH WHEN 0.44 INCHES OF PRECIPITATION FELL. THE 4TH HAD 0.37
INCHES AND BROKE THE 2001 RECORD OF 0.30. THE HIGHEST WIND GUST WAS
33 MPH FROM THE NORTHWEST ON THE 6TH.
...THE LAKE YELLOWSTONE WY CLIMATE SUMMARY FOR THE MONTH OF JANUARY
2026...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1998 TO 2026
WEATHER OBSERVED NORMAL DEPART LAST YEAR'S
VALUE DATE(S) VALUE FROM VALUE
NORMAL
..........................................................
TEMPERATURE (F)
RECORD
HIGH 42 01/27/2015
01/20/2005
01/16/1974
LOW -42 01/30/2023
HIGHEST 39 01/31
LOWEST -17 01/24
AVG. MAXIMUM 27.5 23.0 4.5
AVG. MINIMUM 5.0 1.0 4.0
MEAN 16.3 12.0 4.3
DAYS MAX >= 90 0
DAYS MAX <= 32 23
DAYS MIN <= 32 31
DAYS MIN <= 0 14
PRECIPITATION (INCHES)
RECORD
MAXIMUM 2.81 2020
MINIMUM 0.14 2009
TOTALS 1.61 1.80 -0.19 1.54
DAILY AVG. 0.05 0.06 -0.01
DAYS >= .01 12
DAYS >= .10 6
DAYS >= .50 0
DAYS >= 1.00 0
GREATEST
24 HR. TOTAL 0.44 01/07 TO 01/07
STORM TOTAL 0.44
DEGREE DAYS
HEATING TOTAL 1506 1643 -137
SINCE 7/1 5751 6762 -1011
COOLING TOTAL 0 0 0
SINCE 1/1 0 0 0
..........................................................
WIND (MPH)
AVERAGE WIND SPEED 2.2
RESULTANT WIND SPEED/DIRECTION 0/270
HIGHEST WIND SPEED/DIRECTION 16/260 DATE 01/04
HIGHEST GUST SPEED/DIRECTION 33/290 DATE 01/06
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.00
NUMBER OF DAYS FAIR 31
NUMBER OF DAYS PC 0
NUMBER OF DAYS CLOUDY 0
AVERAGE RH (PERCENT) 76
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 0 MIXED PRECIP 0
HEAVY RAIN 0 RAIN 0
LIGHT RAIN 0 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 12 SLEET 0
FOG 0 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 FEBRUARY 2026. THE AVERAGE HIGH TEMPERATURE ON THE
FIRST OF THE MONTH IS 23 DEGREES...AND THE AVERAGE LOW TEMPERATURE
IS 0 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 30 DEGREES
AND THE AVERAGE LOW TEMPERATURE IS 3 DEGREES. THE AVERAGE MONTHLY
PRECIPITATION IS 1.70 INCHES.
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