CDUS41 KLWX 190634 CLIIAD CLIMATE REPORT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 234 AM EDT TUE MAY 19 2026 ................................... ...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MAY 18 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 95R 2:49 PM 91 1987 75 20 77 MINIMUM 62 5:37 AM 33 1973 54 8 62 AVERAGE 79 64 15 70 PRECIPITATION (IN) YESTERDAY 0.00 3.13 1988 0.15 -0.15 0.00 MONTH TO DATE 0.87 2.68 -1.81 3.34 SINCE MAR 1 5.39 9.65 -4.26 6.77 SINCE JAN 1 11.19 15.20 -4.01 11.19 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 0 3 -3 0 MONTH TO DATE 93 84 9 20 SINCE MAR 1 743 1051 -308 711 SINCE JUL 1 4372 4561 -189 4033 COOLING YESTERDAY 14 3 11 5 MONTH TO DATE 30 35 -5 68 SINCE MAR 1 116 57 59 115 SINCE JAN 1 116 57 59 115 ................................................................... WIND (MPH) HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION S (190) HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION SE (140) AVERAGE WIND SPEED 4.4 SKY COVER AVERAGE SKY COVER 0.2 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. NO SIGNIFICANT WEATHER WAS OBSERVED. RELATIVE HUMIDITY (PERCENT) HIGHEST 93 5:00 AM LOWEST 35 3:00 PM AVERAGE 64 .......................................................... THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 76 92 1996 1997 MINIMUM TEMPERATURE (F) 54 36 2002 SUNRISE AND SUNSET MAY 19 2026...........SUNRISE 5:54 AM EDT SUNSET 8:19 PM EDT MAY 20 2026...........SUNRISE 5:53 AM EDT SUNSET 8:20 PM EDT - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$