I-66 weather conditions near Washington, District of Columbia
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Seasoned Weather Conditions
Current Weather Conditions
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7 day weather forecast
Current condition: A Few Clouds 87°F 2025-06-26T09:52:00-04:00
Today 2025-06-26, Mostly Sunny then Scattered Showers. Scattered showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 95. Heat index values as high as 107. Calm wind becoming northwest around 5 mph in the afternoon. Chance of precipitation is 30%.
Tonight 2025-06-26, Showers Likely then Scattered T-storms. Scattered showers and thunderstorms before 7pm, then showers likely and possibly a thunderstorm between 7pm and 11pm, then scattered showers and thunderstorms after 11pm. Mostly cloudy, with a low around 72. Light east wind. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday 2025-06-27, Showers Likely. A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 81. East wind around 6 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night 2025-06-27, Showers Likely then Chance T-storms. Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 73. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Saturday 2025-06-28, Partly Sunny then Chance T-storms. A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 92. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 40%.
Saturday Night 2025-06-28, Chance T-storms. A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 74. Chance of precipitation is 30%.
Sunday 2025-06-29, Mostly Sunny then Chance T-storms. A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 91. Chance of precipitation is 50%.
Sunday Night 2025-06-29, Chance T-storms. A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 73. Chance of precipitation is 30%.
Monday 2025-06-30, Partly Sunny then Showers Likely. Showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 90. Chance of precipitation is 60%.
Monday Night 2025-06-30, Showers Likely then Chance T-storms. Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 75. Chance of precipitation is 60%.
Tuesday 2025-07-01, Partly Sunny then Showers Likely. Showers likely and possibly a thunderstorm. Partly sunny, with a high near 92. Chance of precipitation is 60%.
Tuesday Night 2025-07-01, Showers Likely then Chance T-storms. Showers and thunderstorms likely. Mostly cloudy, with a low around 72. Chance of precipitation is 60%.
Wednesday 2025-07-02, Mostly Sunny. Mostly sunny, with a high near 90.
Current condition: A Few Clouds 87°F 2025-06-26T09:52:00-04:00 Today 2025-06-26, Mostly Sunny then Scattered Showers. Scattered showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 95. Heat index values as high as 107. Calm wind becoming northwest around 5 mph in the afternoon. Chance of precipitation is 30%.
Tonight 2025-06-26, Showers Likely then Scattered T-storms. Scattered showers and thunderstorms before 7pm, then showers likely and possibly a thunderstorm between 7pm and 11pm, then scattered showers and thunderstorms after 11pm. Mostly cloudy, with a low around 72. Light east wind. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday 2025-06-27, Showers Likely. A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 81. East wind around 6 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.Friday Night 2025-06-27, Showers Likely then Chance T-storms. Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 73. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Saturday 2025-06-28, Partly Sunny then Chance T-storms. A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 92. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 40%.
Saturday Night 2025-06-28, Chance T-storms. A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 74. Chance of precipitation is 30%.Sunday 2025-06-29, Mostly Sunny then Chance T-storms. A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 91. Chance of precipitation is 50%.
Monday 2025-06-30, Partly Sunny then Showers Likely. Showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 90. Chance of precipitation is 60%.
Monday Night 2025-06-30, Showers Likely then Chance T-storms. Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 75. Chance of precipitation is 60%.
Tuesday Night 2025-07-01, Showers Likely then Chance T-storms. Showers and thunderstorms likely. Mostly cloudy, with a low around 72. Chance of precipitation is 60%.
Wednesday 2025-07-02, Mostly Sunny. Mostly sunny, with a high near 90.