I-66 weather conditions near Rockville, Maryland
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Seasoned Weather Conditions
Current Weather Conditions
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7 day weather forecast
Current condition: Fog/Mist 61°F 2025-09-05T05:56:00-04:00 
Today 2025-09-05, Mostly Sunny. Mostly sunny, with a high near 88. Light southwest wind increasing to 8 to 13 mph in the morning. Winds could gust as high as 23 mph.
Tonight 2025-09-05, Mostly Clear. Mostly clear, with a low around 69. South wind around 6 mph.Saturday 2025-09-06, Slight Chance Showers then Showers. A slight chance of showers, then showers and possibly a thunderstorm after 2pm. High near 86. Southwest wind 5 to 8 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night 2025-09-06, Showers then Chance Showers. Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a slight chance of showers after 2am. Low around 59. Northwest wind around 6 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Sunday 2025-09-07, Partly Sunny. Partly sunny, with a high near 74. Northwest wind around 7 mph.- Sunday Night 2025-09-07, Mostly Clear. Mostly clear, with a low around 52.
Monday 2025-09-08, Sunny. Sunny, with a high near 74.- Monday Night 2025-09-08, Mostly Clear. Mostly clear, with a low around 51.
- Tuesday 2025-09-09, Sunny. Sunny, with a high near 74.
Tuesday Night 2025-09-09, Partly Cloudy. Partly cloudy, with a low around 54.- Wednesday 2025-09-10, Partly Sunny. Partly sunny, with a high near 74.
- Wednesday Night 2025-09-10, Partly Cloudy. Partly cloudy, with a low around 56.
- Thursday 2025-09-11, Mostly Sunny. Mostly sunny, with a high near 80.