B.A.A. Boston Half Marathon

Runners will face a steady temperature rise from 45°F at the start to 52°F by the finish. Moderate winds from the WNW at 13 mph will create a headwind during miles 2 and 11, necessitating pacing adjustments. The humidity at 66% may require early hydration, especially in the warmest segments. The initial mile features a descent, providing a fast start before the wind picks up.

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Distance: 13.1mi

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FAQ

When is the 2026 B.A.A. Boston Half Marathon?

The 2026 B.A.A. Boston Half Marathon will be held on Sunday November 8, 2026.

What is the time limit for the B.A.A. Boston Half Marathon?

The time limit for the B.A.A. Boston Half Marathon is 3 hours.

What will the weather be like for the 2026 B.A.A. Boston Half Marathon?

The forecast calls for a high of 55°F and a low of 44°F with a 10% chance of rain.

Historical Weather

Based on 24 years of data

Avg Temp

56°F

L:54° H:58°

RunScore

Conditions

Rain Freq

29%

7 of 24 yrs

Wind9mph

Dew46°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

Year	Low / High	Rain	Dew Point
2025 B.A.A. Boston Half Marathon Partly cloudy throughout the day with rain. 2025	52°/54°	-	49°
2024 B.A.A. Boston Half Marathon Partly cloudy throughout the day with late afternoon rain. 2024	39°/49°	-	20°
2023 B.A.A. Boston Half Marathon Partly cloudy throughout the day. 2023	33°/38°	-	22°
2022 B.A.A. Boston Half Marathon Partly cloudy throughout the day with rain in the morning and afternoon. 2022	52°/52°	Light	49°
2020 B.A.A. Boston Half Marathon Partly cloudy throughout the day. 2020	57°/61°	-	39°
2019 B.A.A. Boston Half Marathon Partly cloudy throughout the day. 2019	59°/64°	-	51°
2018 B.A.A. Boston Half Marathon Cloudy skies throughout the day with rain. 2018	68°/74°	-	64°
2017 B.A.A. Boston Half Marathon Partly cloudy throughout the day with rain. 2017	73°/74°	Light	67°
2016 B.A.A. Boston Half Marathon Cloudy skies throughout the day with a chance of rain throughout the day. 2016	56°/57°	Moderate	55°
2015 B.A.A. Boston Half Marathon Partly cloudy throughout the day. 2015	54°/61°	-	45°
2014 B.A.A. Boston Half Marathon Clear conditions throughout the day. 2014	48°/55°	-	40°
2013 B.A.A. Boston Half Marathon Partly cloudy throughout the day. 2013	55°/58°	-	47°
2012 B.A.A. Boston Half Marathon Partly cloudy throughout the day with rain. 2012	53°/56°	-	40°
2011 B.A.A. Boston Half Marathon Clear conditions throughout the day. 2011	68°/79°	-	52°
2010 B.A.A. Boston Half Marathon Clear conditions throughout the day. 2010	50°/55°	-	32°
2009 B.A.A. Boston Half Marathon Partly cloudy throughout the day. 2009	47°/57°	-	37°
2008 B.A.A. Boston Half Marathon Clear conditions throughout the day with early morning rain. 2008	53°/60°	-	43°
2007 B.A.A. Boston Half Marathon Partly cloudy throughout the day with morning rain. 2007	56°/58°	Light	53°
2006 B.A.A. Boston Half Marathon Clear conditions throughout the day. 2006	48°/60°	-	44°
2005 B.A.A. Boston Half Marathon Cloudy skies throughout the day with a chance of rain throughout the day. 2005	50°/50°	Light	49°
2004 B.A.A. Boston Half Marathon Partly cloudy throughout the day. 2004	60°/63°	-	51°
2003 B.A.A. Boston Half Marathon Partly cloudy throughout the day with rain. 2003	55°/56°	Light	52°
2002 B.A.A. Boston Half Marathon Cloudy skies throughout the day with a chance of rain throughout the day. 2002	56°/56°	Light	55°
2001 B.A.A. Boston Half Marathon Cloudy skies throughout the day with rain. 2001	55°/56°	-	56°