- Clothing
- Waterproof jacket and umbrella strongly recommended.
Tomorrow's Weather Forecast - Washington D.C.
Tomorrow's weather in Washington D.C.. high 26°C (79°F), low 21°C (70°F). Rain Showers.
Tomorrow’s Outlook
Tomorrow brings a similar temperature to today. Expect heavy rain in the evening, with rain chances climbing as high as 75%. That risk lines up with humidity averaging 90% through the day the more moisture in the air, the more readily clouds build into showers. Humidity stays high near 90%, so it will feel muggier and stickier than the temperature alone suggests. A light breeze near 14 km/h is expected. Sunrise is at 6:46 AM and sunset at 7:20 PM, for about 12h 34m of daylight.
- Tomorrow
- 26°/ 21°
- Today27° / 21°
Tomorrow’s Hourly Weather Outlook
Morning6 AM – Noon23°
- Rain probability
- 14%
- Wind speed
- 13 km/h
AfternoonNoon – 6 PM25°
- Rain probability
- 16%
- Wind speed
- 14 km/h
Evening6 PM – Midn24°
- Rain probability
- 75%
- Wind speed
- 5 km/h
NightMidn – 6 AM21°
- Rain probability
- 3%
- Wind speed
- 7 km/h
24-Hour Rain & Temperature Forecast
Tomorrow12 Sep
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Planning Advice for Tomorrow
- Outdoor
- Not ideal for outdoor plans or car washes — heavy rain expected.
- Travel
- Expect traffic slowdowns from wet roads. Allow extra time.
Sunrise & Sunset
Sunrise
Dawn 6:16 AMTotal Daylight
Full day forecastSolar noon 1:03 PM
Sunset
Dusk 7:50 PMvs today-3 min daylight
Sunrise shiftSame time
Sunset shift2 min earlier
5-Day Weather Forecast
Full 15-Day ForecastWeather Insight
Washington D.C. is forecast to reach a high of 26°C tomorrow, with an overnight low around 21°C. That's 1° below the long-term average high of 27°C for this time of year. Expect a high chance of rain (75% probability) and a gentle breeze averaging 14 km/h. Air quality is currently Moderate (AQI 59), driven mainly by PM2.5 at 13 μg/m³.
Today vs Normal
27°C0° below normal
The long-term average high for today is 27°C.
16 of the last 28 days with published data ran above normal.
That's a break from the pattern - today's forecast runs below normal even though the recent stretch mostly ran above.
Red = above normal, blue = at or below · last 12 days
Air Quality
Air Quality
Moderate
Air quality is acceptable for most people. Unusually sensitive individuals should consider reducing prolonged or heavy outdoor exertion.