Climatological Report (Monthly)
Issued by NWS
Issued by NWS
553 CXUS56 KSEW 011035 CLMSEA CLIMATE REPORT NATIONAL WEATHER SERVICE SEATTLE 335 AM PDT SAT JUN 01 2024 ................................... ...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR THE MONTH OF MAY 2024... CLIMATE NORMAL PERIOD 1991 TO 2020 CLIMATE RECORD PERIOD 1945 TO 2024 WEATHER OBSERVED NORMAL DEPART LAST YEAR`S VALUE DATE(S) VALUE FROM VALUE DATE(S) NORMAL ................................................................ TEMPERATURE (F) RECORD HIGH 93 05/21/1963 LOW 28 05/01/1954 HIGHEST 84 05/10 MM MM 89 05/14 LOWEST 40 05/01 MM MM 45 05/10 AVG. MAXIMUM 64.0 66.3 -2.3 70.6 AVG. MINIMUM 47.2 48.7 -1.5 51.2 MEAN 55.6 57.5 -1.9 60.9 DAYS MAX >= 90 0 0.0 0.0 0 DAYS MAX <= 32 0 0.0 0.0 0 DAYS MIN <= 32 0 0.0 0.0 0 DAYS MIN <= 0 0 0.0 0.0 0 PRECIPITATION (INCHES) RECORD MAXIMUM 4.76 1948 MINIMUM 0.12 2018 TOTALS 1.54 1.88 -0.34 0.93 DAILY AVG. 0.05 0.06 -0.01 0.03 DAYS >= .01 12 11.3 0.7 8 DAYS >= .10 6 5.8 0.2 2 DAYS >= .50 1 0.9 0.1 1 DAYS >= 1.00 0 0.1 -0.1 0 GREATEST 24 HR. TOTAL 0.66 05/21 TO 05/21 DEGREE DAYS HEATING TOTAL 292 242 50 156 SINCE 7/1 4151 4258 -107 MM COOLING TOTAL 7 9 -2 35 SINCE 1/1 7 10 -3 MM ................................................................ WIND (MPH) AVERAGE WIND SPEED 8.5 HIGHEST WIND SPEED/DIRECTION 28/220 DATE 05/16 HIGHEST GUST SPEED/DIRECTION 42/210 DATE 05/16 SKY COVER POSSIBLE SUNSHINE (PERCENT) MM AVERAGE SKY COVER 0.66 NUMBER OF DAYS FAIR 6 NUMBER OF DAYS PC 12 NUMBER OF DAYS CLOUDY 13 AVERAGE RH (PERCENT) 65 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 1 MIXED PRECIP 0 HEAVY RAIN 0 RAIN 2 LIGHT RAIN 15 FREEZING RAIN 0 LT FREEZING RAIN 0 HAIL 0 HEAVY SNOW 0 SNOW 0 LIGHT SNOW 0 SLEET 0 FOG 9 FOG W/VIS <= 1/4 MILE 0 HAZE 1 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$