299  
CXUS55 KRIW 021719  
CLMBYG  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
1111 AM MDT MON JUN 02 2025  
 
...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR BUFFALO FOR THE MONTH OF  
MAY 2025...  
 
...OFFICIAL CLIMATE DATA FOR THE MONTH OF MAY 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  
   
..BUFFALO WAS WARMER AND WETTER IN MAY
 
 
THE AVERAGE TEMPERATURE FOR BUFFALO IN MAY WAS 53.7 DEGREES WHICH IS  
1.7 DEGREES ABOVE NORMAL. THE WARMEST READING FOR THE MONTH WAS 85  
DEGREES ON THE 11TH AND BROKE THE 2017 RECORD OF 75. THE 10TH HIGH  
OF 82 BROKE 78 DEGREES FROM 2007. THE COLDEST TEMPERATURE WAS 32  
DEGREES ON THE 5TH AND 6TH.  
 
PRECIPITATION FOR THE MONTH WAS 2.79 INCHES...WHICH IS 102 PERCENT  
OF NORMAL. THE WETTEST 24-HOUR PERIOD WAS ON THE 13TH-14TH WITH 0.69  
INCHES. NO PRECIPITATION RECORDS WERE BROKEN THIS MONTH. THE HIGHEST  
WIND GUST WAS 62 MPH OCCURRING ON THE 19TH FROM THE NORTHWEST.  
   
..THE BUFFALO WY CLIMATE SUMMARY FOR THE MONTH OF MAY 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 91 05/13/2001  
LOW 17 05/02/2005  
HIGHEST 85 05/11  
LOWEST 32 05/05  
05/06  
AVG. MAXIMUM 65.4 62.8 2.6  
AVG. MINIMUM 42.1 41.1 1.0  
MEAN 53.7 52.0 1.7  
DAYS MAX >= 90 0  
DAYS MAX <= 32 0  
DAYS MIN <= 32 2  
DAYS MIN <= 0 0  
 
PRECIPITATION (INCHES)  
RECORD  
MAXIMUM 6.74 2011  
MINIMUM 0.31 2009  
TOTALS 2.79 2.73 0.06 3.35  
DAILY AVG. 0.09 0.09 0.00  
DAYS >= .01 12  
DAYS >= .10 8  
DAYS >= .50 1  
DAYS >= 1.00 0  
GREATEST  
24 HR. TOTAL 0.69 05/13 TO 05/14  
STORM TOTAL 0.60  
 
DEGREE DAYS  
HEATING TOTAL 351 412 -61  
SINCE 7/1 6791 7138 -347  
COOLING TOTAL 11 7 4  
SINCE 1/1 11 7 4    
..........................................................
 
 
WIND (MPH)  
AVERAGE WIND SPEED 12.3  
RESULTANT WIND SPEED/DIRECTION 4/320  
HIGHEST WIND SPEED/DIRECTION 44/350 DATE 05/01  
HIGHEST GUST SPEED/DIRECTION 62/320 DATE 05/19  
 
SKY COVER  
POSSIBLE SUNSHINE (PERCENT) MM  
AVERAGE SKY COVER 0.33  
NUMBER OF DAYS FAIR 14  
NUMBER OF DAYS PC 13  
NUMBER OF DAYS CLOUDY 2  
 
AVERAGE RH (PERCENT) 62  
 
WEATHER CONDITIONS. NUMBER OF DAYS WITH  
THUNDERSTORM 4 MIXED PRECIP 0  
HEAVY RAIN 2 RAIN 5  
LIGHT RAIN 16 FREEZING RAIN 0  
LT FREEZING RAIN 0 HAIL 0  
HEAVY SNOW 0 SNOW 1  
LIGHT SNOW 2 SLEET 0  
FOG 12 FOG W/VIS <= 1/4 MILE 1  
HAZE 1  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 
LOOKING AHEAD TO JUNE 2025. THE AVERAGE HIGH TEMPERATURE ON THE  
FIRST OF THE MONTH IS 68 DEGREES...AND THE AVERAGE LOW TEMPERATURE  
IS 46 DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 80  
DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 54. THE AVERAGE MONTHLY  
PRECIPITATION IS 2.07 INCHES.  
 

 
 
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