GivingTuesday · December 1 · Help keep 141 years of weather observations going.

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GivingTuesday · December 1

Give a day to the record.

Since February 1, 1885, someone has climbed Great Blue Hill every day to record the weather. This GivingTuesday, help us make sure tomorrow happens.

GivingTuesday ends in
—Days
—Hours
—Minutes
51,774Unbroken days
$438Keeps one day going

Make your gift

One-time or monthly. Every gift can honor someone you love.

Trouble with the form? Open our secure page

A record 407 donors kept the record unbroken last year. Join them.

Secure · Tax-deductible · 501(c)(3) EIN 22-2517414

Great Blue Hill, Milton, Massachusetts. Observed every day since 1885.
Why this GivingTuesday

The record is 141 years old. It is not guaranteed.

Blue Hill Observatory holds the longest continuous weather record in North America. NOAA, NASA and leading universities rely on it. It does not maintain itself.

As federal science funding contracts, the daily cost of keeping observations running falls to our community. And 141 years of handwritten logbooks have never been fully digitized. They exist on paper, on a hill, vulnerable to everything paper is vulnerable to.

“The most homogeneous climate record in North America.”World Meteorological Organization
$160,000a year to keep daily observations running
$438keeps one day on the record
$750,000to digitize 141 years of handwritten history
Campaign giving levels

Give a day. Or a month.

Pick a level, then enter it in the form. Every gift can be made in honor or in memory of someone.

$50

Every gift counts

Supports the observers who climb the hill every day.

or $5 a month for a year
Join the record
Give this gift
$100

Nearly a quarter of a day

Covers close to a quarter of one day of observations.

or $10 a month for a year
A quarter day
Give this gift
$250

More than half a day

Covers more than half of one day on the record.

or $21 a month for a year
Over half a day
Give this gift
$438

One full day

One climb. One set of readings added to a record that has never missed a day.

or $37 a month for a year
1 day of observations
Give this gift
Recommended
$1,000

A day, plus a month of history

Protects today’s record and rescues 30 days of the handwritten archive.

or $84 a month for a year
1 day of observations30 days digitized
Give this gift

Prefer to spread it out? Choose Monthly in the form. $37 a month covers one day every year.

Monthly giving

The Daily Climb

The record happens every day, so steady support matters most. Give $37 a month and you cover one full day of observations every year. Give more, and you cover more.

Start a monthly gift →
Education

The summit is a classroom, too.

More than 5,000 students a year visit, learn on field trips and in classrooms, and look through an instrument for the first time. It all runs on the same observation program your gift sustains.

5,000+ students every year
Leadership gifts

Considering a larger gift?

A week on the hill is $3,500. A month is $14,000. If you want to give at that level, or give by stock, multi-year pledge or legacy gift, talk with Cheryl Cummings, our Director of Strategic Partnerships. It is a conversation, nothing more.

Talk with Cheryl →ccummings@bluehill.live

Not ready for a larger gift? Join as a member.

Membership keeps the record going all year and includes admission.

Individual

$50 per year

Admission for you plus a companion

Join →
Family & Friends · Most popular

$100 per year

Admission for your whole household

Join →
Supporting Member

$250 per year

Plus recognition in our member listing

Join →
Community Member

$500 per year

Plus a private tour with an observer

Join →

Students and seniors: $25 Individual | Give a membership as a gift

Other ways to give

Every gift matters. Choose the method that works for you.

By phone

Call to donate

Credit card gifts accepted by phone during regular office hours.

(617) 696-0562
By mail

Send a check

Make checks payable to Blue Hill Observatory Science Center

1 Observatory Service Rd
Milton, MA 02186
Securities

Donate stock

Maximize your tax benefit with appreciated securities.

Transfer shares →
Larger and planned gifts

DAF, IRA or employer match

Recommend a grant from your donor-advised fund to Blue Hill Observatory Science Center, EIN 22-2517414. IRA charitable rollovers and employer matching gifts also help.

Ask Cheryl →
At no cost to you

Shop & give

Shop your favorite stores through Goodshop and they donate to Blue Hill Observatory.

Start shopping →
Candid Platinum Transparency 2026

Candid Platinum Transparency rating. The highest level of nonprofit accountability. Every dollar you give is tracked, reported and put to work for the science.

501(c)(3) · Tax ID 22-2517414 · All gifts are fully tax-deductible.

Give to the record