Blue hill observatory presents

Blue Hill Observatory Climate and Weather Conference

Formerly known as Southern New England Weather Conference, it's a day of ideas, evidence, and conversation about the weather and climate shaping our future. Join scientists, educators, and weather enthusiasts on October 24, 2026, in person or online.

51,762 Unbroken Days

141 Years of Data

2,500+ Youth/Year

A NEW CHAPTER FOR BLUE HILL OBSERVATORY

141 Years. A New Era Begins.

With a new Board of Trustees and a renewed vision for the future, Blue Hill Observatory begins its next chapter, building on 141 years of continuous observation and expanding its impact around the world.

Meet the Trustees Read the Announcement

51,762 Unbroken Days

141 Years of Data

2,500+ Youth/Year

National Historic Landmark · Since 1885

North America's Oldest Continuous Weather Record

Every single day since February 1, 1885 — through wars, storms, and pandemics — someone has climbed Great Blue Hill and recorded the weather.

Support the Record Our Mission

51,762 Unbroken Days

141 Years of Data

2,500+ Youth/Year

Temporary Closure

Vandalism Update and How You Can Help Us

On the evening of June 29, an individual or group vandalized our historic building. The most significant impact occurred in the space that houses 141 years of irreplaceable weather and climate records.

Save America's Most Important Climate and Weather Record

For more than 141 years, Blue Hill Observatory has preserved one of the world's longest, most complete, and most scientifically valuable continuous weather records. Today, funding cuts threaten the observations that scientists rely on and the historic archives that remain undigitized. Help protect this irreplaceable record before it is lost.

Donate Now Learn more

51,762 Unbroken Days

141 Years of Data

2,500+ Youth/Year

From the Observatory

Latest News & Research

Oct 22, 2026 Give the Gift of Membership
Gift memberships to Blue Hill Observatory are now available, starting at $25.
Oct 20, 2026 The Observatory Salon: Big Ideas, Free and Online
Blue Hill Observatory's monthly Observatory Salon brings leading scientists into conversation with our community.
Oct 19, 2026 Many Hands on the Hill
Corporate volunteers and the first Blue Hills Fest brought the community together on Great Blue Hill this fall.
Oct 13, 2026 Our New Board of Trustees Gets to Work
Six weeks in, Blue Hill Observatory's new Board of Trustees and its committees are up and running.

See all news →

Current Conditions

Great Blue Hill Today

Oct 22 · 7:53 PM EST