015 CDUS41 KLWX 210620 CLIIAD CLIMATE REPORT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 220 AM EDT WED MAY 21 2025 ................................... ...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MAY 20 2025... CLIMATE NORMAL PERIOD: 1991 TO 2020 CLIMATE RECORD PERIOD: 1960 TO 2025 WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST VALUE (LST) VALUE VALUE FROM YEAR NORMAL ................................................................... TEMPERATURE (F) YESTERDAY MAXIMUM 70 2:57 PM 93 1996 76 -6 81 MINIMUM 53 4:34 AM 36 2002 54 -1 54 AVERAGE 62 65 -3 68 PRECIPITATION (IN) YESTERDAY 0.02 1.86 2005 0.16 -0.14 T MONTH TO DATE 3.36 2.99 0.37 3.16 SINCE MAR 1 6.79 9.96 -3.17 8.79 SINCE JAN 1 11.21 15.51 -4.30 16.24 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 0.0 4.0 -4.0 T SINCE JUL 1 15.5 21.0 -5.5 11.7 SNOW DEPTH 0 DEGREE DAYS HEATING YESTERDAY 3 3 0 0 MONTH TO DATE 23 90 -67 47 SINCE MAR 1 714 1057 -343 726 SINCE JUL 1 4036 4567 -531 3690 COOLING YESTERDAY 0 3 -3 3 MONTH TO DATE 68 41 27 49 SINCE MAR 1 115 63 52 93 SINCE JAN 1 115 63 52 96 ................................................................... WIND (MPH) HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION N (350) HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION N (350) AVERAGE WIND SPEED 6.1 SKY COVER AVERAGE SKY COVER 0.6 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. LIGHT RAIN RELATIVE HUMIDITY (PERCENT) HIGHEST 66 5:00 AM LOWEST 35 3:00 PM AVERAGE 51 .......................................................... THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 76 92 1996 2022 MINIMUM TEMPERATURE (F) 55 33 1992 SUNRISE AND SUNSET MAY 21 2025...........SUNRISE 5:52 AM EDT SUNSET 8:21 PM EDT MAY 22 2025...........SUNRISE 5:51 AM EDT SUNSET 8:22 PM EDT - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$