


NWS Forecast for: Herndon VA Issued by: National Weather Service Baltimore, MD/Washington, D.C. Last Update: 1:29 am EDT Jun 17, 2025 | ![]() |
Overnight: A chance of showers, mainly after 4am. Patchy fog. Otherwise, cloudy, with a low around 66. Light east wind. Chance of precipitation is 30%. Tuesday: A chance of rain before 1pm, then a slight chance of showers and thunderstorms after 3pm. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 82. South wind 5 to 7 mph. Chance of precipitation is 30%. Tuesday Night: A chance of showers and thunderstorms before 2am, then a slight chance of showers between 2am and 3am. Mostly cloudy, with a low around 71. Southeast wind around 6 mph. Chance of precipitation is 40%. Wednesday: Showers likely and possibly a thunderstorm, mainly after 2pm. Mostly cloudy through mid morning, then becoming sunny, with a high near 91. Southwest wind 6 to 10 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms. Wednesday Night: Showers likely and possibly a thunderstorm before 8pm. Mostly clear, with a low around 73. Southwest wind around 6 mph. Chance of precipitation is 60%. Juneteenth: Showers likely and possibly a thunderstorm after 2pm. Mostly sunny, with a high near 93. Chance of precipitation is 60%. Thursday Night: Showers likely and possibly a thunderstorm before 8pm. Partly cloudy, with a low around 66. Chance of precipitation is 60%. Friday: Sunny, with a high near 88. Friday Night: Partly cloudy, with a low around 68. Saturday: Sunny, with a high near 92. Saturday Night: Partly cloudy, with a low around 73. Sunday: Mostly sunny, with a high near 96. Sunday Night: Mostly clear, with a low around 76. Monday: Sunny and hot, with a high near 98. | |
Herndon VA 38.97°N 77.38°W (Elev. 354 ft) | |
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