263  
CXUS55 KRIW 020129  
CLMGEY  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
608 PM MST SAT FEB 01 2025  
 
...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR GREYBULL FOR THE MONTH OF  
JANUARY 2025...  
 
...OFFICIAL CLIMATE DATA FOR THE MONTH OF JANUARY 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  
   
..GREYBULL IN JANUARY WAS WETTER THAN NORMAL.
 
 
THE AVERAGE TEMPERATURE FOR GREYBULL IN JANUARY WAS 17.5 DEGREES  
WHICH IS NORMAL. THE WARMEST TEMPERATURE FOR THE MONTH WAS 43  
DEGREES ON THE 29TH. THE COLDEST TEMPERATURE WAS 14 DEGREES BELOW  
ZERO ON THE 20TH. THIS BROKE THE 2022 RECORD OF 14 BELOW.  
 
PRECIPITATION FOR THE MONTH WAS 0.16 INCHES...WHICH IS 107 PERCENT  
OF NORMAL. THE WETTEST 24-HOUR PERIOD OCCURRED ON THE 8TH WITH 0.09  
INCHES. THE 4TH HAD 0.06 INCHES AND BROKE THE 2007 RECORD OF 0.03.  
THE 8TH HAD 0.09 INCHES AND BROKE 0.01 FROM 2016. THE HIGHEST WIND  
GUST WAS 51 MPH FROM THE NORTHWEST ON THE 17TH.  
   
..THE GREYBULL WY CLIMATE SUMMARY FOR THE MONTH OF JANUARY 2025
 
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1998 TO 2025  
 
WEATHER OBSERVED NORMAL DEPART LAST YEAR'S  
VALUE DATE(S) VALUE FROM VALUE  
NORMAL    
..........................................................
 
 
TEMPERATURE (F)  
RECORD  
HIGH 56 01/31/2024  
LOW -37 01/27/2009  
HIGHEST 43 01/29  
LOWEST -14 01/20  
AVG. MAXIMUM 29.3 28.9 0.4  
AVG. MINIMUM 5.8 6.0 -0.2  
MEAN 17.5 17.5 0.0  
DAYS MAX >= 90 0  
DAYS MAX <= 32 20  
DAYS MIN <= 32 31  
DAYS MIN <= 0 9  
 
PRECIPITATION (INCHES)  
RECORD  
MAXIMUM 0.42 2008  
MINIMUM 0.00 2006  
TOTALS 0.16 0.15 0.01 T  
DAILY AVG. 0.01 0.00 0.01  
DAYS >= .01 3  
DAYS >= .10 0  
DAYS >= .50 0  
DAYS >= 1.00 0  
GREATEST  
24 HR. TOTAL 0.09 01/08 TO 01/08  
STORM TOTAL 0.09  
 
 
DEGREE DAYS  
HEATING TOTAL 1464 1474 -10  
SINCE 7/1 3968 4670 -702  
COOLING TOTAL 0 0 0  
SINCE 1/1 0 0 0    
..........................................................
 
 
WIND (MPH)  
AVERAGE WIND SPEED 5.7  
RESULTANT WIND SPEED/DIRECTION 2/320  
HIGHEST WIND SPEED/DIRECTION 39/330 DATE 01/17  
HIGHEST GUST SPEED/DIRECTION 51/320 DATE 01/17  
 
SKY COVER  
POSSIBLE SUNSHINE (PERCENT) MM  
AVERAGE SKY COVER 0.38  
NUMBER OF DAYS FAIR 14  
NUMBER OF DAYS PC 13  
NUMBER OF DAYS CLOUDY 4  
 
AVERAGE RH (PERCENT) 73  
 
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 1 SNOW 2  
LIGHT SNOW 13 SLEET 0  
FOG 12 FOG W/VIS <= 1/4 MILE 2  
HAZE 5  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 
LOOKING AHEAD TO FEBRUARY 2025. THE AVERAGE HIGH TEMPERATURE ON THE  
FIRST OF THE MONTH IS 30 DEGREES...AND THE AVERAGE LOW TEMPERATURE  
IS 8 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 43 DEGREES  
AND THE AVERAGE LOW TEMPERATURE IS 18 DEGREES. THE AVERAGE MONTHLY  
PRECIPITATION IS 0.12 INCHES.  

 
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab WY Page Main Text Page