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Boston Cut-off Time Prediction Contest

Predict the 2027 Boston Cut-off Time and win a great prize and bragging rights among all your running friends.

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Historical weather

Historical Race Day Weather for the Heart of America Marathon

See historical race day weather for the Heart of America Marathon, including start temperature, humidity, wind, race day temperatures, PR score, and course score.

Weather Averages for Last 14 Years

Race day snapshot

Clear

Most common race morning weather across the last 14 years.

Start Line Conditions

Start Temp 67°F 19°C

Start Humidity 87% Humidity

Wind SSW 5 mph

Race day high 85°F 29°C

Race day low 66°F 19°C

PR Score 92.1 Weather-influenced race day scoring

Course Score 96.56 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 7, 2026

Race day snapshot

Clear

Start Line Conditions

Start Temp 70°F 21°C

Start Humidity 73% Humidity

Wind E 7 mph Wind

Race day high 89°F 32°C

Race day low 71°F 22°C

PR Score 92.82 Normal score 93.44