Climatological Report (Monthly)
Issued by NWS
Issued by NWS
000 CXUS56 KMTR 010900 CLMAPC CLIMATE REPORT NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA 200 AM PDT SUN OCT 01 2023 ................................... ...THE NAPA AIRPORT CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2023... CLIMATE NORMAL PERIOD: 1991 TO 2020 CLIMATE RECORD PERIOD: 1998 TO 2023 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 85 09/27 115 09/06 LOWEST 46 09/09 48 09/28 09/23 AVG. MAXIMUM 77.5 85.2 AVG. MINIMUM 54.1 55.2 MEAN 65.8 70.2 DAYS MAX >= 90 0 8 DAYS MAX <= 32 0 0 DAYS MIN <= 32 0 0 DAYS MIN <= 0 0 0 PRECIPITATION (INCHES) TOTALS 0.12 0.07 0.05 0.61 DAILY AVG. 0.00 0.02 DAYS >= .01 3 2 DAYS >= .10 0 1 DAYS >= .50 0 1 DAYS >= 1.00 0 0 GREATEST 24 HR. TOTAL 0.07 09/30 TO 09/30 0.59 09/18 TO 09/18 DEGREE DAYS HEATING TOTAL 19 5 SINCE 7/1 27 MM COOLING TOTAL 53 166 SINCE 1/1 326 MM ................................................................ WIND (MPH) AVERAGE WIND SPEED 8.4 RESULTANT WIND SPEED/DIRECTION 7/230 HIGHEST WIND SPEED/DIRECTION 24/200 DATE 09/21 24/280 09/27 HIGHEST GUST SPEED/DIRECTION 34/330 DATE 09/16 SKY COVER POSSIBLE SUNSHINE (PERCENT) MM AVERAGE SKY COVER 0.34 NUMBER OF DAYS FAIR 15 NUMBER OF DAYS PC 13 NUMBER OF DAYS CLOUDY 2 AVERAGE RH (PERCENT) 68 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 0 MIXED PRECIP 0 HEAVY RAIN 0 RAIN 0 LIGHT RAIN 8 FREEZING RAIN 0 LT FREEZING RAIN 0 HAIL 0 HEAVY SNOW 0 SNOW 0 LIGHT SNOW 0 SLEET 0 FOG 14 FOG W/VIS <= 1/4 MILE 2 HAZE 10 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$