Weather

Temperatures range from warm, humid summer days to cold New England winter days. Wear comfortable sportswear in season with comfortable walking shoes.

For up-to-date weather-related closures, please visit the park's Alerts and Conditions page on the website.

 

Extreme Weather Procedures

The National Parks of Boston monitors the local heat index (the combination of air temperature and relative humidity, commonly referred to as "Feels like") to ensure the safety of its visitors and staff. On hot summer days, some sites may be closed. Please see the following for park closures during extreme heat.

Feels Like 87 - 90 degrees Fahrenheit:

  • Bunker Hill Monument will close
  • Lower decks of USS Cassin Young will close
  • Outdoor tours and programs will be modified to reduce heat exposure

Feels Like 90 - 105 degrees Fahrenheit:

  • Bunker Hill Monument will close
  • Lower decks and upper decks of USS Cassin Young will close
  • Outdoor tours and programs will be cancelled

Feels Like greater than 105 degrees Fahrenheit:

  • All outdoor activities will be suspended until heat index lowers
 

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Last updated: August 13, 2021

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Contact Info

Mailing Address:

Boston National Historical Park
21 Second Ave

Charlestown, MA 02129

Phone:

617 242-5601

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