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Boston Cut-off Time Prediction Contest

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Historical weather

Historical Race Day Weather for the Santa Rosa Marathon

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

Weather Averages for Last 13 Years

Race day snapshot

Overcast

Most common race morning weather across the last 13 years.

Start Line Conditions

Start Temp 55°F 13°C

Start Humidity 90% Humidity

Wind N 2 mph

Race day high 82°F 28°C

Race day low 54°F 12°C

PR Score 98.09 Weather-influenced race day scoring

Course Score 99.29 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.

August 23, 2026

Race day snapshot

Partially cloudy

Start Line Conditions

Start Temp 54°F 12°C

Start Humidity 93% Humidity

Wind E 2 mph Wind

Race day high 83°F 28°C

Race day low 54°F 12°C

PR Score 97.98 Normal score 98.47

Course Score 99.16 Course-only Score

Boston Qualifying Cut-off Time Prediction Contest