CXUS56 KSEW 011032 CLMSEA CLIMATE REPORT NATIONAL WEATHER SERVICE SEATTLE 332 AM PDT TUE APR 01 2025 ................................... ...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR THE MONTH OF MARCH 2025... CLIMATE NORMAL PERIOD 1991 TO 2020 CLIMATE RECORD PERIOD 1945 TO 2025 WEATHER OBSERVED NORMAL DEPART LAST YEAR'S VALUE DATE(S) VALUE FROM VALUE DATE(S) NORMAL ................................................................ TEMPERATURE (F) RECORD HIGH 79 03/20/2019 03/19/2019 LOW 11 03/04/1955 HIGHEST 73 03/25 MM MM 74 03/16 LOWEST 34 03/14 MM MM 28 03/06 03/18 AVG. MAXIMUM 53.6 54.2 -0.6 54.1 AVG. MINIMUM 40.5 39.9 0.6 40.2 MEAN 47.1 47.1 -0.0 47.1 DAYS MAX >= 90 0 0.0 0.0 0 DAYS MAX <= 32 0 0.0 0.0 0 DAYS MIN <= 32 0 1.9 -1.9 3 DAYS MIN <= 0 0 0.0 0.0 0 PRECIPITATION (INCHES) RECORD MAXIMUM 9.44 2014 MINIMUM 0.57 1965 TOTALS 5.16 4.17 0.99 2.36 DAILY AVG. 0.17 0.13 0.04 0.08 DAYS >= .01 21 17.1 3.9 16 DAYS >= .10 12 10.9 1.1 10 DAYS >= .50 3 2.1 0.9 1 DAYS >= 1.00 0 0.4 -0.4 0 GREATEST 24 HR. TOTAL 0.87 03/15 TO 03/16 SNOWFALL (INCHES) RECORDS TOTAL 18.2 1951 TOTALS 0.0 0.4 -0.4 0.3 SINCE 7/1 2.3 6.3 -4.0 MM SNOWDEPTH AVG. 0 0 DAYS >= 1.0 0 0 GREATEST SNOW DEPTH 0 0 24 HR TOTAL MM 0.3 DEGREE DAYS HEATING TOTAL 546 557 -11 549 SINCE 7/1 3703 3604 99 MM COOLING TOTAL 0 0 0 0 SINCE 1/1 0 0 0 MM ................................................................ WIND (MPH) AVERAGE WIND SPEED 8.5 HIGHEST WIND SPEED/DIRECTION 29/210 DATE 03/19 29/120 03/30 HIGHEST GUST SPEED/DIRECTION 44/100 DATE 03/30 SKY COVER POSSIBLE SUNSHINE (PERCENT) MM AVERAGE SKY COVER 0.83 NUMBER OF DAYS FAIR 0 NUMBER OF DAYS PC 7 NUMBER OF DAYS CLOUDY 24 AVERAGE RH (PERCENT) 76 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 1 MIXED PRECIP 0 HEAVY RAIN 0 RAIN 6 LIGHT RAIN 25 FREEZING RAIN 0 LT FREEZING RAIN 0 HAIL 0 HEAVY SNOW 0 SNOW 0 LIGHT SNOW 0 SLEET 1 FOG 19 FOG W/VIS <= 1/4 MILE 3 HAZE 1 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$