Climatological Report (Monthly)
Issued by NWS
Issued by NWS
864 CXUS56 KMTR 010838 CLMAPC CLIMATE REPORT NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA 138 AM PDT TUE OCT 01 2024 ................................... ...THE NAPA AIRPORT CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2024... CLIMATE NORMAL PERIOD: 1991 TO 2020 CLIMATE RECORD PERIOD: 1998 TO 2024 WEATHER OBSERVED NORMAL DEPART LAST YEAR`S VALUE DATE(S) VALUE FROM VALUE DATE(S) NORMAL ................................................................ TEMPERATURE (F) RECORD HIGH 115 MM LOW 35 09/29/2019 HIGHEST 96 09/03 85 09/27 LOWEST 45 09/08 46 09/09 09/23 AVG. MAXIMUM 80.1 77.5 AVG. MINIMUM 51.4 54.1 MEAN 65.8 65.8 DAYS MAX >= 90 4 0 DAYS MAX <= 32 0 0 DAYS MIN <= 32 0 0 DAYS MIN <= 0 0 0 PRECIPITATION (INCHES) TOTALS TR 0.07 -0.07 0.12 DAILY AVG. 0.00 0.00 DAYS >= .01 0 3 DAYS >= .10 0 0 DAYS >= .50 0 0 DAYS >= 1.00 0 0 GREATEST 24 HR. TOTAL T 09/18 TO 09/18 0.07 09/30 TO 09/30 09/25 TO 09/25 09/26 TO 09/26 DEGREE DAYS HEATING TOTAL 26 19 SINCE 7/1 39 MM COOLING TOTAL 58 53 SINCE 1/1 359 MM ................................................................ WIND (MPH) AVERAGE WIND SPEED 7.3 RESULTANT WIND SPEED/DIRECTION 6/220 HIGHEST WIND SPEED/DIRECTION 28/270 DATE 09/11 HIGHEST GUST SPEED/DIRECTION 34/260 DATE 09/11 SKY COVER POSSIBLE SUNSHINE (PERCENT) MM AVERAGE SKY COVER 0.19 NUMBER OF DAYS FAIR 21 NUMBER OF DAYS PC 9 NUMBER OF DAYS CLOUDY 0 AVERAGE RH (PERCENT) 70 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 0 MIXED PRECIP 0 HEAVY RAIN 0 RAIN 0 LIGHT RAIN 2 FREEZING RAIN 0 LT FREEZING RAIN 0 HAIL 0 HEAVY SNOW 0 SNOW 0 LIGHT SNOW 0 SLEET 0 FOG 12 FOG W/VIS <= 1/4 MILE 4 HAZE 3 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$