Forecast for each day of Marine Corps Marathon 2026
- SunOct 25
Not in the forecast yet. The National Weather Service forecasts about 7 days ahead, so this day comes into range around Oct 18.
Each day covers only the event’s hours, in local time. Levels use the same weather-risk scale as the Road Travel app. For delays or closures, follow the event’s own announcements.
What October is usually like
Monthly normals from NOAA’s Washington Reagan Airport station, the nearest long-term station to Marine Corps War Memorial (3 miles away).
| Month | Arlington Washington Reagan Airport station · 3 mi from Marine Corps War Memorial | |
|---|---|---|
| High / low °F | Precip (in) | |
| Jan | 45° / 30° | 2.9 |
| Feb | 48° / 32° | 2.6 |
| Mar | 57° / 39° | 3.5 |
| Apr | 68° / 48° | 3.2 |
| May | 77° / 58° | 3.9 |
| Jun | 85° / 68° | 4.2 |
| Jul | 90° / 72° | 4.3 |
| Aug | 88° / 71° | 3.2 |
| Sep | 81° / 64° | 3.9 |
| Oct | 69° / 52° | 3.7 |
| Nov | 58° / 42° | 2.9 |
| Dec | 49° / 35° | 3.4 |
NOAA NCEI U.S. Climate Normals, 1991–2020: WASHINGTON REAGAN AP (USW00013743, 10 ft). Precipitation is the monthly total of rain and melted snow, in inches. “—” means the station does not publish that normal.
Official updates
Delays, closures and safety instructions come from the organizers, so these go straight to their pages and to the National Weather Service.
- Marine Corps Marathon · officialMarine Corps Marathon race day
- Marine Corps Marathon · officialMarine Corps Marathon safety
- Marine Corps Marathon · officialMarine Corps Marathon official site
- National Weather ServiceForecast for Marine Corps War Memorial
Check the official National Weather Service forecast for Marine Corps War Memorial and the organizers’ announcements before you go.
Driving to Marine Corps Marathon? See the weather for the hour you’ll be on the road
Road Travel times the forecast to your drive into Arlington, so you see conditions where you will be when you get there, and alerts about storms ahead on the way.
Questions about Marine Corps Marathon weather
When is Marine Corps Marathon 2026?
October 25, 2026, at Marine Corps War Memorial in Arlington. Race: 7:20 AM–2:15 PM, per the organizers.
How much does it rain in Arlington in October?
Arlington averages 3.7 inches of rain in October at NOAA’s Washington Reagan Airport station (1991–2020 normals). The forecast above shows this year’s chances for each day of the event.
How warm is it in Arlington in October?
October averages a high of 69°F and a low of 52°F at NOAA’s Washington Reagan Airport station (1991–2020 normals).