Tomorrow in Washington (Reagan National): Mild and mostly cloudy, high of 17°

Sunday 1 November at Ronald Reagan Washington National Airport (DCA), United States

Tomorrow at DCA

High17°

Likely 16°–18°

Mostly cloudy

Low 8°, likely 7°–10°

3% chance of rain
Wind up to 14 km/h
Humidity 66%

Through the day

Times are local; night hours are shaded. The line is a sketch, not an hour-by-hour forecast: this airport's typical daily temperature cycle, scaled to tomorrow's high and low.

Tomorrow's high should be about the same as today's, and 1° cooler than the normal high for 1 November. Rain is less likely than usual: 3% against a normal 30% for the date.

How sure we are

Shaded: the likely range (an 80% range). In our tests, eight days in ten ended inside it.

Right now at DCA

17°, mostly cloudy, wind from the northwest at 11 km/h.

Latest airport report, 13:00 local time.

The details

Chance of rain: 3% normal 30%
Chance of thunder: 1% or less
Chance of fog: 1% or less
Strongest wind: 14 km/h
Strongest gust: 17 km/h
Average humidity: 66%
Daytime sky: Mostly cloudy

Chances are for the local day. Rain means rain, drizzle or snow in at least one hourly airport report; fog means fog or visibility under 1 km in at least one. "Normal" is this airport's usual chance for the date. Wind and gust are the strongest of the day.

How our forecasts did here

Each band is the forecast high ±2°, each dot what the airport measured. Highs more than 2° off are in bold. Rained means rain or snow was reported that day.
Day	High forecast	High measured	Low forecast	Low measured	Rain chance	Rained
Fri 30 Oct	24°	25°	13°	13°	2%	No
Thu 29 Oct	21°	22°	11°	12°	3%	No
Wed 28 Oct	19°	19°	11°	11°	2%	No
Tue 27 Oct	20°	22°	11°	11°	2%	No
Sun 25 Oct	19°	18°	6°	7°	2%	No
Fri 23 Oct	22°	17°	8°	9°	1%	No
Thu 22 Oct	22°	21°	9°	8°	4%	No
Wed 21 Oct	23°	20°	10°	10°	1%	No
Tue 20 Oct	23°	22°	9°	8°	1%	No
Sun 18 Oct	14°	13°	5°	7°	2%	No
Sat 17 Oct	20°	17°	12°	9°	33%	Yes
Fri 16 Oct	21°	22°	16°	16°	82%	Yes
Thu 15 Oct	25°	26°	17°	17°	47%	Yes
Wed 14 Oct	27°	29°	17°	18°	21%	No

The forecast high was within 2° on 10 of the last 14 scored days. Days that could not be scored are left out. Forecasts before 27 October did not yet use ECMWF and were less accurate on average.

"Measured" is the highest and lowest hourly airport report of the local day. Official daily highs and lows can differ a little: at US airports the official high averages about 0.4° higher and the official low about 0.5° lower. More

Not for aviation or safety decisions. Disclaimer