I-66 weather conditions near Gaithersburg, Maryland
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Seasoned Weather Conditions
Current Weather Conditions
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7 day weather forecast
Current condition: Fair 59°F 2025-09-12T22:56:00-04:00 
Tonight 2025-09-12, Clear. Clear, with a low around 58. Calm wind.
Saturday 2025-09-13, Sunny. Sunny, with a high near 83. Calm wind becoming southwest around 5 mph in the afternoon.
Saturday Night 2025-09-13, Mostly Clear. Mostly clear, with a low around 61. South wind around 6 mph.
Sunday 2025-09-14, Mostly Sunny. Mostly sunny, with a high near 85. Light and variable wind.- Sunday Night 2025-09-14, Partly Cloudy. Partly cloudy, with a low around 62. Light southeast wind.
- Monday 2025-09-15, Mostly Sunny. Mostly sunny, with a high near 84.
- Monday Night 2025-09-15, Partly Cloudy. Partly cloudy, with a low around 62.
- Tuesday 2025-09-16, Mostly Sunny. Mostly sunny, with a high near 80.
Tuesday Night 2025-09-16, Mostly Cloudy. Mostly cloudy, with a low around 60.
Wednesday 2025-09-17, Partly Sunny. Partly sunny, with a high near 78.- Wednesday Night 2025-09-17, Mostly Cloudy. Mostly cloudy, with a low around 60.
- Thursday 2025-09-18, Mostly Sunny. Mostly sunny, with a high near 80.
- Thursday Night 2025-09-18, Partly Cloudy. Partly cloudy, with a low around 61.
- Friday 2025-09-19, Mostly Sunny. Mostly sunny, with a high near 83.