Climatological Report (Monthly)
Issued by NWS
Issued by NWS
792 CXUS56 KMTR 010853 CLMSFO CLIMATE REPORT NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA 1253 AM PST MON JAN 01 2024 ................................... ...THE SAN FRANCISCO AIRPORT CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2023... CLIMATE NORMAL PERIOD: 1991 TO 2020 CLIMATE RECORD PERIOD: 1927 TO 2023 WEATHER OBSERVED NORMAL DEPART LAST YEAR`S VALUE DATE(S) VALUE FROM VALUE DATE(S) NORMAL ................................................................ TEMPERATURE (F) RECORD HIGH 75 12/12/1958 12/04/1958 12/02/1958 LOW 24 12/09/1972 HIGHEST 66 12/05 64 12/30 LOWEST 43 12/09 38 12/13 12/16 12/18 AVG. MAXIMUM 61.9 58.2 3.7 56.2 AVG. MINIMUM 50.0 44.6 MEAN 55.9 51.4 4.5 50.4 DAYS MAX >= 90 0 0 DAYS MAX <= 32 0 0 DAYS MIN <= 32 0 0 DAYS MIN <= 0 0 0 PRECIPITATION (INCHES) RECORD MAXIMUM 12.30 1955 MINIMUM 0.01 1989 TOTALS 3.91 4.14 -0.23 9.66 DAILY AVG. 0.13 0.13 -0.00 0.31 DAYS >= .01 11 13 DAYS >= .10 7 11 DAYS >= .50 3 6 DAYS >= 1.00 1 3 GREATEST 24 HR. TOTAL 1.32 12/19 TO 12/20 3.92 12/30 TO 12/31 DEGREE DAYS HEATING TOTAL 273 422 -149 450 SINCE 7/1 496 927 -431 MM COOLING TOTAL 0 0 0 0 SINCE 1/1 280 201 79 MM ................................................................ WIND (MPH) AVERAGE WIND SPEED 5.5 RESULTANT WIND SPEED/DIRECTION 1/200 HIGHEST WIND SPEED/DIRECTION 28/280 DATE 12/22 HIGHEST GUST SPEED/DIRECTION 36/200 DATE 12/19 SKY COVER POSSIBLE SUNSHINE (PERCENT) MM AVERAGE SKY COVER 0.62 NUMBER OF DAYS FAIR 5 NUMBER OF DAYS PC 16 NUMBER OF DAYS CLOUDY 10 AVERAGE RH (PERCENT) 74 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 0 MIXED PRECIP 0 HEAVY RAIN 3 RAIN 6 LIGHT RAIN 13 FREEZING RAIN 0 LT FREEZING RAIN 0 HAIL 0 HEAVY SNOW 0 SNOW 0 LIGHT SNOW 0 SLEET 0 FOG 21 FOG W/VIS <= 1/4 MILE 4 HAZE 25 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$