Old Colony Marathon

Westfield, MA, USA • May 29, 2026

Race Day Weather

56°

74° high

Breezy

Dry

Warming trend, moderate humidity

Runners will face a temperature rise from 56°F to 74°F, with humidity averaging 70%. A light tailwind at 10 mph will provide some assistance. Given the heat and humidity, pacing should be conservative early on, with increased hydration frequency to maintain performance.

Race day forecast available in 52 days

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Pre-raceRace windowPost-race

Course Map

FAQ

When is the 2026 Old Colony Marathon?

The 2026 Old Colony Marathon will be held on Friday May 29, 2026.

Is the Old Colony Marathon a Boston Marathon Qualifier?

Yes, the Old Colony Marathon is an official Boston Marathon qualifier.

What will the weather be like for the 2026 Old Colony Marathon?

The forecast calls for a high of 75°F and a low of 56°F with a 0% chance of rain.

Historical Weather

Based on 2 years of data

Avg Temp

77°F

L:52° H:77°

RunScore

Conditions

Rain Freq

0 of 2 yrs

Wind11mph

Dew48°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

Year	Conditions	Low / High	Rain	Dew Point	Score
2025 Old Colony Marathon Clear conditions throughout the day. 2025		50°/76°	-	44°
2024 Old Colony Marathon Partly cloudy throughout the day. 2024		53°/77°	-	53°

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