984  
CDUS46 KMTR 190031  
CLIAPC  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
531 PM PDT SAT MAY 18 2024  
   
...............................
 
 
   
..THE NAPA AIRPORT CLIMATE SUMMARY FOR MAY 18 2024
 
 
VALID TODAY AS OF 0500 PM LOCAL TIME.  
 
CLIMATE NORMAL PERIOD: 1991 TO 2020  
CLIMATE RECORD PERIOD: 1998 TO 2024  
 
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST  
VALUE (LST) VALUE VALUE FROM YEAR  
NORMAL    
...............................................................
 
 
TEMPERATURE (F)  
TODAY  
MAXIMUM 66 1:54 PM 91 2022 73 -7 71  
MINIMUM 52 6:29 AM 39 2013 48 4 52  
AVERAGE 59 61 -2 62  
 
PRECIPITATION (IN)  
TODAY 0.00 0.00  
MONTH TO DATE 0.69 0.70  
SINCE OCT 1 19.88 29.49  
SINCE JAN 1 13.84 21.07  
 
DEGREE DAYS  
HEATING  
TODAY 6 3  
MONTH TO DATE 107 115  
SINCE MAR 1 738 799  
SINCE JUL 1 2386 2829  
 
COOLING  
TODAY 0 0  
MONTH TO DATE 5 6  
SINCE MAR 1 5 9  
SINCE JAN 1 5 9    
...............................................................
 
 
WIND (MPH)  
RESULTANT WIND SPEED 9 RESULTANT WIND DIRECTION SW (240)  
HIGHEST WIND SPEED 25 HIGHEST WIND DIRECTION S (200)  
HIGHEST GUST SPEED 31 HIGHEST GUST DIRECTION S (190)  
AVERAGE WIND SPEED 12.0  
 
SKY COVER  
POSSIBLE SUNSHINE MM  
AVERAGE SKY COVER 0.8  
 
WEATHER CONDITIONS  
THE FOLLOWING WEATHER WAS RECORDED TODAY.  
NO SIGNIFICANT WEATHER WAS OBSERVED.  
 
RELATIVE HUMIDITY (PERCENT)  
HIGHEST 93 1:00 AM  
LOWEST 65 1:00 PM  
AVERAGE 79  
   
......................................................
 
 
THE NAPA AIRPORT CLIMATE NORMALS FOR TOMORROW  
NORMAL RECORD YEAR  
MAXIMUM TEMPERATURE (F) 74 88 2017  
2022  
MINIMUM TEMPERATURE (F) 48 40 2003  
2011  
 
SUNRISE AND SUNSET  
MAY 18 2024...........SUNRISE 5:55 AM PDT SUNSET 8:16 PM PDT  
MAY 19 2024...........SUNRISE 5:55 AM PDT SUNSET 8:17 PM PDT  
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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