CDUS41 KLWX 040621 CLIIAD CLIMATE REPORT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 221 AM EDT MON MAY 04 2026 ................................... ...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MAY 3 2026... CLIMATE NORMAL PERIOD: 1991 TO 2020 CLIMATE RECORD PERIOD: 1960 TO 2026 WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST VALUE (LST) VALUE VALUE FROM YEAR NORMAL ................................................................... TEMPERATURE (F) YESTERDAY MAXIMUM 63 5:45 PM 92 1965 72 -9 83 MINIMUM 40 5:35 AM 32 1963 49 -9 64 2005 AVERAGE 52 61 -9 74 PRECIPITATION (IN) YESTERDAY 0.00 1.03 1984 0.14 -0.14 0.17 MONTH TO DATE 0.01 0.42 -0.41 0.17 SINCE MAR 1 4.53 7.39 -2.86 3.60 SINCE JAN 1 10.33 12.94 -2.61 8.02 SNOWFALL (IN) YESTERDAY 0.0 MM MM 0.0 0.0 0.0 MONTH TO DATE 0.0 0.0 0.0 0.0 SINCE MAR 1 1.0 4.0 -3.0 0.0 SINCE JUL 1 13.6 21.0 -7.4 15.5 SNOW DEPTH 0 DEGREE DAYS HEATING YESTERDAY 13 6 7 0 MONTH TO DATE 37 18 19 0 SINCE MAR 1 687 985 -298 691 SINCE JUL 1 4316 4495 -179 4013 COOLING YESTERDAY 0 1 -1 9 MONTH TO DATE 0 3 -3 23 SINCE MAR 1 86 25 61 70 SINCE JAN 1 86 25 61 70 ................................................................... WIND (MPH) HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION NW (300) HIGHEST GUST SPEED 29 HIGHEST GUST DIRECTION NW (310) AVERAGE WIND SPEED 7.8 SKY COVER AVERAGE SKY COVER 0.3 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. NO SIGNIFICANT WEATHER WAS OBSERVED. RELATIVE HUMIDITY (PERCENT) HIGHEST 70 3:00 AM LOWEST 23 6:00 PM AVERAGE 47 .......................................................... THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 72 90 2001 2018 MINIMUM TEMPERATURE (F) 49 31 1967 SUNRISE AND SUNSET MAY 4 2026...........SUNRISE 6:08 AM EDT SUNSET 8:05 PM EDT MAY 5 2026...........SUNRISE 6:07 AM EDT SUNSET 8:06 PM EDT - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$