Climatological Report (Monthly)
Issued by NWS
Issued by NWS
875 CXUS56 KMTR 010853 CLMSTS CLIMATE REPORT NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA 1253 AM PST MON JAN 01 2024 ................................... ...THE SANTA ROSA AIRPORT CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 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 78 12/15/2013 12/19/1999 12/04/1958 LOW 19 12/09/2013 HIGHEST 70 12/22 63 12/24 LOWEST 30 12/10 26 12/16 12/18 AVG. MAXIMUM 60.8 57.5 3.3 55.9 AVG. MINIMUM 41.6 36.9 4.7 36.8 MEAN 51.2 47.2 4.0 46.4 DAYS MAX >= 90 0 0.0 0.0 0 DAYS MAX <= 32 0 0.0 0.0 0 DAYS MIN <= 32 6 10.9 -4.9 11 DAYS MIN <= 0 0 0.0 0.0 0 PRECIPITATION (INCHES) RECORD MAXIMUM 17.95 2005 MINIMUM 0.08 2017 TOTALS 8.74 9.71 DAILY AVG. 0.28 0.31 DAYS >= .01 13 14 DAYS >= .10 9 13 DAYS >= .50 4 9 DAYS >= 1.00 4 3 GREATEST 24 HR. TOTAL 2.74 12/18 TO 12/18 2.94 12/26 TO 12/27 DEGREE DAYS HEATING TOTAL 420 570 SINCE 7/1 866 MM COOLING TOTAL 0 0 SINCE 1/1 498 MM ................................................................ WIND (MPH) AVERAGE WIND SPEED 3.1 RESULTANT WIND SPEED/DIRECTION 0/180 HIGHEST WIND SPEED/DIRECTION 17/200 DATE 12/19 17/140 12/27 17/140 12/29 HIGHEST GUST SPEED/DIRECTION 28/200 DATE 12/19 SKY COVER POSSIBLE SUNSHINE (PERCENT) MM AVERAGE SKY COVER 0.58 NUMBER OF DAYS FAIR 10 NUMBER OF DAYS PC 11 NUMBER OF DAYS CLOUDY 10 AVERAGE RH (PERCENT) 83 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 0 MIXED PRECIP 0 HEAVY RAIN 7 RAIN 11 LIGHT RAIN 16 FREEZING RAIN 0 LT FREEZING RAIN 0 HAIL 0 HEAVY SNOW 0 SNOW 0 LIGHT SNOW 0 SLEET 0 FOG 31 FOG W/VIS <= 1/4 MILE 17 HAZE 1 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$