CXUS56 KMTR 010834 CLMCCR CLIMATE REPORT NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA 1234 AM PST THU JAN 01 2026 ................................... ...THE CONCORD AIRPORT CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2025... CLIMATE NORMAL PERIOD: 1991 TO 2020 CLIMATE RECORD PERIOD: 1999 TO 2025 WEATHER OBSERVED NORMAL DEPART LAST YEAR'S VALUE DATE(S) VALUE FROM VALUE DATE(S) NORMAL ................................................................ TEMPERATURE (F) RECORD HIGH 75 MM LOW 24 12/10/2013 HIGHEST 67 12/17 69 12/04 12/08 LOWEST 36 12/28 35 12/31 AVG. MAXIMUM 55.4 59.8 AVG. MINIMUM 44.4 43.7 MEAN 49.9 51.8 DAYS MAX >= 90 0 0 DAYS MAX <= 32 0 0 DAYS MIN <= 32 0 0 DAYS MIN <= 0 0 0 PRECIPITATION (INCHES) TOTALS 1.42 3.18 -1.76 1.61 DAILY AVG. 0.05 0.05 DAYS >= .01 4 6 DAYS >= .10 3 4 DAYS >= .50 1 0 DAYS >= 1.00 0 0 GREATEST 24 HR. TOTAL 0.76 12/24 TO 12/25 0.79 12/13 TO 12/14 DEGREE DAYS HEATING TOTAL 462 401 SINCE 7/1 759 MM COOLING TOTAL 0 0 SINCE 1/1 1035 MM ................................................................ WIND (MPH) AVERAGE WIND SPEED 5.6 RESULTANT WIND SPEED/DIRECTION 1/080 HIGHEST WIND SPEED/DIRECTION 35/150 DATE 12/25 HIGHEST GUST SPEED/DIRECTION 53/180 DATE 12/25 SKY COVER POSSIBLE SUNSHINE (PERCENT) MM AVERAGE SKY COVER 0.74 NUMBER OF DAYS FAIR 3 NUMBER OF DAYS PC 6 NUMBER OF DAYS CLOUDY 22 AVERAGE RH (PERCENT) 85 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 0 MIXED PRECIP 0 HEAVY RAIN 1 RAIN 4 LIGHT RAIN 12 FREEZING RAIN 0 LT FREEZING RAIN 0 HAIL 0 HEAVY SNOW 0 SNOW 0 LIGHT SNOW 0 SLEET 0 FOG 30 FOG W/VIS <= 1/4 MILE 6 HAZE 17 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$