Historical Race Day Weather for the Boston or Bust Marathon

September 7, 2025

Race day snapshot

Clear

Start Line Conditions

Start Temp 58°F 14°C

Start Humidity 80% Humidity

Wind N 1 mph Wind

Race day high 74°F 23°C

Race day low 57°F 14°C

PR Score 97.98 Normal score 95.15

Course Score 99.45 Course-only Score

Course-adjusted pacing

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September 8, 2024

Race day snapshot

Clear

Start Line Conditions

Start Temp 52°F 11°C

Start Humidity 71% Humidity

Wind NNE 5 mph Wind

Race day high 81°F 27°C

Race day low 52°F 11°C

PR Score 99.11 Normal score 95.15

Course Score 99.45 Course-only Score

September 10, 2023

Race day snapshot

Overcast

Start Line Conditions

Start Temp 67°F 19°C

Start Humidity 96% Humidity

Wind NNE 1 mph Wind

Race day high 83°F 28°C

Race day low 66°F 19°C

PR Score 93.67 Normal score 95.15

Course Score 99.45 Course-only Score

September 11, 2022

Race day snapshot

Cloudy

Start Line Conditions

Start Temp 71°F 22°C

Start Humidity 97% Humidity

Wind SSE 5 mph Wind

Race day high 80°F 27°C

Race day low 70°F 21°C

PR Score 91.28 Normal score 95.15

Course Score 99.45 Course-only Score