964 CDUS41 KLWX 160622 CLIIAD CLIMATE REPORT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 222 AM EDT FRI MAY 16 2025 ................................... ...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MAY 15 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 81 4:22 PM 90 1962 75 6 67 MINIMUM 64 5:18 AM 37 1984 53 11 57 2016 AVERAGE 73 64 9 62 PRECIPITATION (IN) YESTERDAY 0.08 2.40 2003 0.16 -0.08 0.08 MONTH TO DATE 3.33 2.22 1.11 2.47 SINCE MAR 1 6.76 9.19 -2.43 8.10 SINCE JAN 1 11.18 14.74 -3.56 15.55 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 0 4 -4 3 MONTH TO DATE 20 73 -53 45 SINCE MAR 1 711 1040 -329 724 SINCE JUL 1 4033 4550 -517 3688 COOLING YESTERDAY 8 2 6 0 MONTH TO DATE 40 26 14 42 SINCE MAR 1 87 48 39 86 SINCE JAN 1 87 48 39 89 ................................................................... WIND (MPH) HIGHEST WIND SPEED 10 HIGHEST WIND DIRECTION SW (220) HIGHEST GUST SPEED 14 HIGHEST GUST DIRECTION S (200) AVERAGE WIND SPEED 3.2 SKY COVER AVERAGE SKY COVER 0.7 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. LIGHT RAIN FOG RELATIVE HUMIDITY (PERCENT) HIGHEST 100 4:00 AM LOWEST 56 5:00 PM AVERAGE 78 .......................................................... THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 75 90 1998 MINIMUM TEMPERATURE (F) 53 35 2000 SUNRISE AND SUNSET MAY 16 2025...........SUNRISE 5:56 AM EDT SUNSET 8:17 PM EDT MAY 17 2025...........SUNRISE 5:55 AM EDT SUNSET 8:18 PM EDT - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$