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: Mostly Cloudy 78°F 2025-06-17T17:52:00-04:00
Tonight 2025-06-17, Showers Likely then Chance T-storms. Showers and thunderstorms likely before 2am, then a slight chance of showers. Mostly cloudy, with a low around 71. Southeast wind around 6 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday 2025-06-18, Mostly Sunny then Showers Likely. A slight chance of showers before 2pm, then a chance of showers and thunderstorms between 2pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Mostly sunny, with a high near 92. Heat index values as high as 101. Southwest wind 5 to 9 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night 2025-06-18, Chance T-storms then Mostly Clear. A chance of showers and thunderstorms, mainly before 7pm. Mostly clear, with a low around 74. Southwest wind 3 to 5 mph. Chance of precipitation is 30%.
Juneteenth 2025-06-19, Sunny then Showers Likely. Showers likely and possibly a thunderstorm after 2pm. Increasing clouds, with a high near 94. Heat index values as high as 101. Southwest wind 6 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night 2025-06-19, Showers Likely then Chance Showers. Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 67. West wind 6 to 8 mph. Chance of precipitation is 60%.
Friday 2025-06-20, Sunny. Sunny, with a high near 87.
Friday Night 2025-06-20, Mostly Clear. Mostly clear, with a low around 68.
Saturday 2025-06-21, Sunny. Sunny, with a high near 92.
Saturday Night 2025-06-21, Partly Cloudy. Partly cloudy, with a low around 73.
Sunday 2025-06-22, Hot. Sunny and hot, with a high near 97.
Sunday Night 2025-06-22, Mostly Clear. Mostly clear, with a low around 76.
Monday 2025-06-23, Hot. Sunny and hot, with a high near 100.
Monday Night 2025-06-23, Mostly Clear. Mostly clear, with a low around 79.
Tuesday 2025-06-24, Hot. Sunny and hot, with a high near 101.
Current condition: Mostly Cloudy 78°F 2025-06-17T17:52:00-04:00 Tonight 2025-06-17, Showers Likely then Chance T-storms. Showers and thunderstorms likely before 2am, then a slight chance of showers. Mostly cloudy, with a low around 71. Southeast wind around 6 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday 2025-06-18, Mostly Sunny then Showers Likely. A slight chance of showers before 2pm, then a chance of showers and thunderstorms between 2pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Mostly sunny, with a high near 92. Heat index values as high as 101. Southwest wind 5 to 9 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night 2025-06-18, Chance T-storms then Mostly Clear. A chance of showers and thunderstorms, mainly before 7pm. Mostly clear, with a low around 74. Southwest wind 3 to 5 mph. Chance of precipitation is 30%.
Juneteenth 2025-06-19, Sunny then Showers Likely. Showers likely and possibly a thunderstorm after 2pm. Increasing clouds, with a high near 94. Heat index values as high as 101. Southwest wind 6 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night 2025-06-19, Showers Likely then Chance Showers. Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 67. West wind 6 to 8 mph. Chance of precipitation is 60%.
Friday 2025-06-20, Sunny. Sunny, with a high near 87.
Friday Night 2025-06-20, Mostly Clear. Mostly clear, with a low around 68.
Saturday Night 2025-06-21, Partly Cloudy. Partly cloudy, with a low around 73.
Sunday 2025-06-22, Hot. Sunny and hot, with a high near 97.