CXUS56 KMTR 011730 CLMSTS CLIMATE REPORT NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA 930 AM PST SUN FEB 01 2026 ................................... ...THE SANTA ROSA AIRPORT CLIMATE SUMMARY FOR THE MONTH OF JANUARY 2026... CLIMATE NORMAL PERIOD: 1991 TO 2020 CLIMATE RECORD PERIOD: 1998 TO 2026 WEATHER OBSERVED NORMAL DEPART LAST YEAR'S VALUE DATE(S) VALUE FROM VALUE DATE(S) NORMAL ................................................................ TEMPERATURE (F) RECORD HIGH 82 01/12/2009 LOW 20 01/15/2007 HIGHEST 71 01/24 78 01/09 LOWEST 30 01/13 28 01/22 01/28 AVG. MAXIMUM 61.5 57.9 3.6 62.6 AVG. MINIMUM 37.8 37.5 0.3 35.9 MEAN 49.7 47.7 2.0 49.3 DAYS MAX >= 90 0 0.0 0.0 0 DAYS MAX <= 32 0 0.0 0.0 0 DAYS MIN <= 32 10 9.1 0.9 9 DAYS MIN <= 0 0 0.0 0.0 0 PRECIPITATION (INCHES) RECORD MAXIMUM 18.96 2017 MINIMUM 0.10 2014 TOTALS 5.32 1.11 DAILY AVG. 0.15 0.04 DAYS >= .01 6 3 DAYS >= .10 6 2 DAYS >= .50 4 1 DAYS >= 1.00 1 0 GREATEST 24 HR. TOTAL 1.86 01/04 TO 01/05 0.63 01/31 TO 01/31 DEGREE DAYS HEATING TOTAL 468 478 SINCE 7/1 1419 MM COOLING TOTAL 0 0 SINCE 1/1 0 MM ................................................................ WIND (MPH) AVERAGE WIND SPEED 3.6 RESULTANT WIND SPEED/DIRECTION 1/180 HIGHEST WIND SPEED/DIRECTION 28/180 DATE 01/03 HIGHEST GUST SPEED/DIRECTION 40/170 DATE 01/03 SKY COVER POSSIBLE SUNSHINE (PERCENT) MM AVERAGE SKY COVER 0.39 NUMBER OF DAYS FAIR 17 NUMBER OF DAYS PC 8 NUMBER OF DAYS CLOUDY 6 AVERAGE RH (PERCENT) 78 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 0 MIXED PRECIP 0 HEAVY RAIN 4 RAIN 5 LIGHT RAIN 8 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 20 HAZE 10- INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$