Best Boston Marathon Qualifiers

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Historical weather

Historical Race Day Weather for the Back Your Badge Marathon

See historical race day weather for the Back Your Badge Marathon, including start temperature, humidity, wind, race day temperatures, PR score, and course score.

Weather Averages for Last 1 Years

Race day snapshot

Partially cloudy

Most common race morning weather across the last 1 years.

Start Line Conditions

Start Temp 74°F 23°C

Start Humidity 87% Humidity

Wind E 2 mph

Race day high 84°F 29°C

Race day low 70°F 21°C

PR Score 92.12 Weather-influenced race day scoring

Course Score 99.04 Course-only Score

Race Day Weather by Year

Most recent years appear first so you can quickly compare start conditions, temperatures, wind, and scores across different editions of the race.

September 20, 2026