Forecast for each day of Head of the Charles 2026
- FriOct 16Masters racing
Not in the forecast yet. The National Weather Service forecasts about 7 days ahead, so this day comes into range around Oct 9.
- SatOct 17
Not in the forecast yet. The National Weather Service forecasts about 7 days ahead, so this day comes into range around Oct 10.
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 Boston Logan International Airport station, the nearest long-term station to Charles River (5 miles away).
| Month | Cambridge Boston Logan International Airport station · 5 mi from Charles River | |
|---|---|---|
| High / low °F | Precip (in) | |
| Jan | 37° / 23° | 3.4 |
| Feb | 39° / 25° | 3.2 |
| Mar | 46° / 31° | 4.2 |
| Apr | 56° / 41° | 3.6 |
| May | 67° / 50° | 3.2 |
| Jun | 76° / 60° | 3.9 |
| Jul | 82° / 66° | 3.3 |
| Aug | 80° / 65° | 3.2 |
| Sep | 73° / 58° | 3.6 |
| Oct | 62° / 48° | 4.0 |
| Nov | 52° / 38° | 3.7 |
| Dec | 42° / 29° | 4.3 |
NOAA NCEI U.S. Climate Normals, 1991–2020: BOSTON LOGAN INTL AP (USW00014739, 12 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.
- Head of the Charles · officialHead of the Charles racing schedule
- Head of the Charles · officialHead of the Charles: where to watch
- Head of the Charles · officialHead of the Charles official site
- National Weather ServiceForecast for Charles River
Check the official National Weather Service forecast for Charles River and the organizers’ announcements before you go.
Driving to Head of the Charles? See the weather for the hour you’ll be on the road
Road Travel times the forecast to your drive into Cambridge, so you see conditions where you will be when you get there, and alerts about storms ahead on the way.
Questions about Head of the Charles weather
When is Head of the Charles 2026?
October 16–18, 2026, at Charles River in Cambridge.
How much does it rain in Cambridge in October?
Cambridge averages 4.0 inches of rain in October at NOAA’s Boston Logan International Airport station (1991–2020 normals). The forecast above shows this year’s chances for each day of the event.
How warm is it in Cambridge in October?
October averages a high of 62°F and a low of 48°F at NOAA’s Boston Logan International Airport station (1991–2020 normals).