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Weather forecasts and information for all of Loudoun County, Virginia. Including Leesburg, Aldie, Waterford, Ashburn, Sterling, Dulles, Hamilton, Purcellville, South Riding. Loudoun Weather is your source for Loudoun County weather forecasts, weather radar and more.

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Loudoun County Weather Outlook for Monday, August 18, 2025

Posted on August 18, 2025August 18, 2025 By admin No Comments on Loudoun County Weather Outlook for Monday, August 18, 2025
8/18/2025
🌫️ Cooler, but a Humid & Damp Start to the Week
Despite the high humidity thanks to ocean influence, temps today stay in the mid to upper 70s today and tomorrow.

🌧️ Foggy Nights & Daily Shower Chances
This pattern holds through Thursday with highs generally near 80°F. Each day brings a slight chance for showers, and with all the moisture in place, fog is likely overnight and early mornings.

⛅ Warming Up for the Weekend
Friday and Saturday will see increased sunshine and mid-80s with a touch more humidity. Showers are possible on Sunday.

The forecast:
Today: Hi 76 ⛅ Lo 64 ⛅ – Mostly cloudy

Tuesday: Hi 73 🌦️20% Lo 65 ⛅20% – Mostly cloudy with patchy fog early and a slight chance of showers before and after mid‑morning

Wednesday: Hi 81 🌦️20% Lo 66 ⛅20% – Mostly cloudy with a slight chance of afternoon showers or thunderstorms, continuing into the evening

Thursday: Hi 82 ⛅ Lo 63 ⛅ – Partly sunny

Friday: Hi 85 ☀️ Lo 65 ⛅ – Mostly sunny

Saturday: Hi 86 ☀️ Lo 66 🌧️30% – Mostly sunny, with a chance of showers at night

Sunday: Hi 85 🌦️40% Lo 68 🌧️ – Mostly sunny with a chance of afternoon showers

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