502  
CXUS55 KRIW 021619  
CLMBYG  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE RIVERTON WY  
1013 AM MDT FRI MAY 02 2025  
 
...PRELIMINARY MONTHLY CLIMATE SUMMARY FOR BUFFALO FOR THE MONTH OF  
APRIL 2025...  
 
...OFFICIAL CLIMATE DATA FOR THE MONTH OF APRIL 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 COOLER AND DRIER IN APRIL
 
 
THE AVERAGE TEMPERATURE FOR BUFFALO IN APRIL WAS 42.6 DEGREES WHICH  
IS 0.3 DEGREES BELOW NORMAL. THE WARMEST READING FOR THE MONTH WAS  
79 DEGREES ON THE 11TH AND TIED THE 2012 RECORD. THE 15TH HIGH OF 69  
TIED THE 2006 RECORD. THE COLDEST TEMPERATURE WAS 20 DEGREES ON THE  
5TH AND 14TH.  
 
PRECIPITATION FOR THE MONTH WAS 0.91 INCHES...WHICH IS 62 PERCENT OF  
NORMAL. THE WETTEST 24-HOUR PERIOD WAS ON THE 28TH WITH 0.44 INCHES.  
NO PRECIPITATION RECORDS WERE BROKEN THIS MONTH. THE HIGHEST WIND  
GUST WAS 59 MPH OCCURRING ON THE 13TH FROM THE NORTHWEST.  
   
..THE BUFFALO WY CLIMATE SUMMARY FOR THE MONTH OF APRIL 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 84 04/28/2018  
LOW 2 04/02/2020  
HIGHEST 79 04/11  
LOWEST 20 04/05  
04/14  
AVG. MAXIMUM 54.4 53.4 1.0  
AVG. MINIMUM 30.7 32.3 -1.6  
MEAN 42.6 42.9 -0.3  
DAYS MAX >= 90 0  
DAYS MAX <= 32 0  
DAYS MIN <= 32 16  
DAYS MIN <= 0 0  
 
PRECIPITATION (INCHES)  
RECORD  
MAXIMUM 3.38 1999  
MINIMUM 0.21 2007  
TOTALS 0.91 1.46 -0.55 0.57  
DAILY AVG. 0.03 0.05 -0.02  
DAYS >= .01 8  
DAYS >= .10 3  
DAYS >= .50 0  
DAYS >= 1.00 0  
GREATEST  
24 HR. TOTAL 0.44 04/28 TO 04/28  
STORM TOTAL 0.44  
 
DEGREE DAYS  
HEATING TOTAL 667 665 2  
SINCE 7/1 6440 6725 -285  
COOLING TOTAL 0 0 0  
SINCE 1/1 0 0 0    
..........................................................
 
 
WIND (MPH)  
AVERAGE WIND SPEED 11.2  
RESULTANT WIND SPEED/DIRECTION 5/330  
HIGHEST WIND SPEED/DIRECTION 44/350 DATE 04/13  
HIGHEST GUST SPEED/DIRECTION 59/340 DATE 04/13  
 
SKY COVER  
POSSIBLE SUNSHINE (PERCENT) MM  
AVERAGE SKY COVER 0.40  
NUMBER OF DAYS FAIR 16  
NUMBER OF DAYS PC 7  
NUMBER OF DAYS CLOUDY 7  
 
AVERAGE RH (PERCENT) 61  
 
WEATHER CONDITIONS. NUMBER OF DAYS WITH  
THUNDERSTORM 1 MIXED PRECIP 0  
HEAVY RAIN 0 RAIN 1  
LIGHT RAIN 8 FREEZING RAIN 0  
LT FREEZING RAIN 0 HAIL 0  
HEAVY SNOW 1 SNOW 3  
LIGHT SNOW 8 SLEET 0  
FOG 11 FOG W/VIS <= 1/4 MILE 4  
HAZE 0  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 
LOOKING AHEAD TO MAY 2025. THE AVERAGE HIGH TEMPERATURE ON THE FIRST  
OF THE MONTH IS 58 DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 36  
DEGREES. THE AVERAGE HIGH BY THE END OF THE MONTH IS 68  
DEGREES...AND THE AVERAGE LOW TEMPERATURE IS 46. THE AVERAGE MONTHLY  
PRECIPITATION IS 2.73 INCHES.  
 

 
 
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