15-Day Weather Forecast - Washington D.C.
15-day weather forecast for Washington D.C.: temperatures from 15°C (59°F) to 33°C (91°F). Average daily high 27°C (81°F) over the next 15 days.
Hourly Forecast by Day
15-Day Temperature Trend
15-Day Weather Forecast
Updated just nowWeather Insight
Washington D.C.'s 15-day outlook ranges from a low of 15°C to a high of 33°C, with an average daytime high near 27°C. Air quality is currently Moderate (AQI 55), driven mainly by O₃ at 119 μg/m³.
Today vs Normal
The long-term average high for today is 27°C.
10 of the last 20 days with published data ran above normal.
That's a break from the pattern - today's forecast runs above normal even though the recent stretch mostly ran below.
Red = above normal, blue = at or below · last 12 days
Air Quality
Air quality is acceptable for most people. Unusually sensitive individuals should consider reducing prolonged or heavy outdoor exertion.
Extended Outlook for Washington D.C.
Over the next 15 days, Washington D.C. is forecast to see temperatures ranging from 15°C to 33°C, averaging a daily high of 27°C. The extended outlook indicates significant rainfall totalling 244.5 mm spread across 7 days. Conditions are suitable for most outdoor activities; carry an umbrella on days with showers.