CDUS41 KLWX 092128 CLIIAD CLIMATE REPORT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 528 PM EDT FRI MAY 09 2025 ................................... ...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR MAY 9 2025... VALID TODAY AS OF 0500 PM LOCAL TIME. 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) TODAY MAXIMUM 63 3:59 PM 91 1963 74 -11 74 MINIMUM 55 11:59 AM 30 1976 51 4 60 AVERAGE 59 62 -3 67 PRECIPITATION (IN) TODAY 0.55 0.93 1974 0.15 0.40 0.02 MONTH TO DATE 1.43 1.29 0.14 1.52 SINCE MAR 1 4.86 8.26 -3.40 7.15 SINCE JAN 1 9.28 13.81 -4.53 14.60 SNOWFALL (IN) TODAY 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 TODAY 6 5 1 0 MONTH TO DATE 8 49 -41 15 SINCE MAR 1 699 1016 -317 694 SINCE JUL 1 4021 4526 -505 3658 COOLING TODAY 0 2 -2 2 MONTH TO DATE 29 14 15 42 SINCE MAR 1 76 36 40 86 SINCE JAN 1 76 36 40 89 ................................................................... WIND (MPH) HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION N (350) HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION N (340) AVERAGE WIND SPEED 10.2 SKY COVER AVERAGE SKY COVER 0.9 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED TODAY. THUNDERSTORM HEAVY RAIN RAIN LIGHT RAIN FOG RELATIVE HUMIDITY (PERCENT) HIGHEST 96 1:00 AM LOWEST 60 4:00 PM AVERAGE 78 ..........................................................THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 74 90 1963 MINIMUM TEMPERATURE (F) 51 31 1966 1983 SUNRISE AND SUNSET MAY 9 2025...........SUNRISE 6:03 AM EDT SUNSET 8:10 PM EDT MAY 10 2025...........SUNRISE 6:02 AM EDT SUNSET 8:11 PM EDT - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$