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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 Sioux Falls Marathon

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

Weather Averages for Last 13 Years

Race day snapshot

Clear

Most common race morning weather across the last 13 years.

Start Line Conditions

Start Temp 57°F 14°C

Start Humidity 90% Humidity

Wind SSE 7 mph

Race day high 79°F 26°C

Race day low 56°F 13°C

PR Score 96.46 Weather-influenced race day scoring

Course Score 98.81 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

Race day snapshot

Partially cloudy

Start Line Conditions

Start Temp 57°F 14°C

Start Humidity 96% Humidity

Wind NE 8 mph Wind

Race day high 69°F 21°C

Race day low 57°F 14°C

PR Score 97.99 Normal score 98.09

Course Score 98.66 Course-only Score

Boston Qualifying Cut-off Time Prediction Contest