Climatological Report (Monthly)
Issued by NWS
Issued by NWS
000 CXUS56 KSEW 011034 CLMSEA CLIMATE REPORT NATIONAL WEATHER SERVICE SEATTLE 334 AM PDT THU JUN 01 2023 ................................... ...THE SEATTLE-TACOMA WA AIRPORT CLIMATE SUMMARY FOR THE MONTH OF MAY 2023... CLIMATE NORMAL PERIOD 1991 TO 2020 CLIMATE RECORD PERIOD 1945 TO 2023 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 89 05/14 MM MM 71 05/22 LOWEST 45 05/10 MM MM 40 05/08 05/09 05/13 AVG. MAXIMUM 70.6 66.3 4.3 60.0 AVG. MINIMUM 51.2 48.7 2.5 45.2 MEAN 60.9 57.5 3.4 52.6 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 0.93 1.88 -0.95 3.82 DAILY AVG. 0.03 0.06 -0.03 0.12 DAYS >= .01 8 11.3 -3.3 15 DAYS >= .10 2 5.8 -3.8 10 DAYS >= .50 1 0.9 0.1 2 DAYS >= 1.00 0 0.1 -0.1 0 GREATEST 24 HR. TOTAL 0.74 05/04 TO 05/05 DEGREE DAYS HEATING TOTAL 156 242 -86 375 SINCE 7/1 4321 4258 63 MM COOLING TOTAL 35 9 26 0 SINCE 1/1 35 10 25 MM ................................................................ WIND (MPH) AVERAGE WIND SPEED 7.1 HIGHEST WIND SPEED/DIRECTION 33/010 DATE 05/02 HIGHEST GUST SPEED/DIRECTION 43/010 DATE 05/02 SKY COVER POSSIBLE SUNSHINE (PERCENT) MM AVERAGE SKY COVER 0.59 NUMBER OF DAYS FAIR 7 NUMBER OF DAYS PC 13 NUMBER OF DAYS CLOUDY 11 AVERAGE RH (PERCENT) 63 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 3 MIXED PRECIP 0 HEAVY RAIN 0 RAIN 1 LIGHT RAIN 11 FREEZING RAIN 0 LT FREEZING RAIN 0 HAIL 0 HEAVY SNOW 0 SNOW 0 LIGHT SNOW 0 SLEET 0 FOG 5 FOG W/VIS <= 1/4 MILE 1 HAZE 6 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$