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Climate & Weather

Weather Summary Archives

Weather Summary Archives May 8, 2019
April 2019 Summary – Sixth Wettest and Sixth Cloudiest on Record

Blue Hill Observatory April 2019 Summary: April was warmer than average, though it ended cool, with much above average rainfall and below…

Weather Summary Archives Apr 7, 2019
March 2019 Summary – Sunnier and Snowier Than Average

Blue Hill Observatory March 2019 Summary: March temperature was near average, and the month brought more snow than average despite being drier…

Weather Summary Archives Mar 11, 2019
Winter 2018-2019 Summary – Warmer, Sunnier and Much Less Snowy than Average

Blue Hill Observatory Winter 2018-2019 Summary: The winter (December-February) season was generally warm with a few cold periods, ample sunshine, average precipitation…

Weather Summary Archives Mar 8, 2019
February 2019 Summary – Warmer and Drier Than Average

Blue Hill Observatory February 2019 Summary: February was warmer and slightly drier than average with below average snowfall. The 24-hour adjusted mean…

Weather Summary Archives Feb 9, 2019
January 2019 Summary – Warmer and Wetter Than Average

Blue Hill Observatory January 2019 Summary: January was slightly warmer and wetter than average with very little snowfall and abundant sunshine. The…

Weather Summary Archives Jan 11, 2019
2018 Was the Third Wettest Year on Record

The year 2018 ended with a 24-hour corrected mean temperature of 50.0F, which was 2.4F warmer than the 120-year (1891-2010) long-term mean…

Weather Summary Archives Jan 9, 2019
December 2018 Summary – Warmer and Sunnier Than Average

Blue Hill Observatory December 2018 Summary: December was warmer and drier than average with very little snowfall and abundant sunshine. The 24-hour…

Weather Summary Archives Dec 11, 2018
November 2018 Summary – Wettest on Record

Blue Hill Observatory November 2018 Summary: November got off to a warm start then turned generally colder and brought record precipitation. The…

Weather Summary Archives Nov 9, 2018
October 2018 Summary – Colder and Wetter Than Average

Blue Hill Observatory October 2018 Summary: October got off to a warm start then turned colder and brought above normal precipitation. The…

Weather Summary Archives Oct 9, 2018
September 2018 Summary – Eighth Wettest and Second Cloudiest on Record

Blue Hill Observatory September 2018 Summary: September got off to a warm start and brought much above normal precipitation. The 24-hour adjusted…

Blue Hill Observatory & Science Center · Legal

Data Use & Privacy Policy

Please read the full Policy before accessing Observatory data · Effective January 1, 2025

Notice: By accessing, downloading, or using any Blue Hill Observatory data or services, you unconditionally accept and agree to be bound by this Policy in its entirety. If you do not agree, you may not access or use Observatory data.
Effective January 1, 2025 · Milton, Massachusetts · bluehill.org
Part I — Data Use Policy
§ 01

Ownership and Proprietary Rights

All observational records, compiled datasets, metadata, database structures, and related materials provided by the Blue Hill Observatory & Science Center are the exclusive property of the Blue Hill Observatory & Science Center. The Observatory has maintained continuous weather observations at the summit of Great Blue Hill since 1885, and the entirety of that record — its compilation, structure, curation, and organization — constitutes a proprietary database protected under applicable United States law, including copyright law and common law database protections.

All rights not expressly granted in this Policy are reserved by the Observatory. No access to or use of Observatory data shall be construed as a waiver of any rights or as a license to use data beyond the scope expressly stated herein.

§ 02

Governing Law and Jurisdiction

This Policy shall be governed by and construed in accordance with the laws of the Commonwealth of Massachusetts, without regard to its conflict of law provisions. For interactions with international users, this Policy shall apply to the maximum extent permitted by applicable local law.

Any dispute arising from or related to this Policy shall be subject to the exclusive jurisdiction of the state and federal courts located in Norfolk County, Massachusetts. By accessing Observatory data, all users consent to personal jurisdiction in Massachusetts and waive any objection to the venue or inconvenience of such forum.

§ 03

Permitted Uses

Observatory data are made available for the following limited, non-commercial purposes only:

  • Personal study and analysis
  • Educational classroom use
  • Student projects
  • Non-commercial academic research
  • Publication of analyses, figures, models, or conclusions derived from the data, subject to the attribution requirements of Section 4

All other uses require prior written authorization from the Observatory.

§ 04

Attribution Requirement

Any use of Observatory data in any published, presented, or publicly distributed work must include the following verbatim acknowledgment:

“Data provided by the Blue Hill Observatory & Science Center, Milton, Massachusetts. Continuous weather observations since 1885.”

Failure to include proper attribution is a material violation of this Policy.

§ 05

Prohibited Uses

Unless explicitly authorized in writing, Users may not:

  • Resell, license, sublicense, or commercially exploit Observatory data in any form
  • Redistribute the dataset in whole or in part to any third party
  • Publish the dataset for download by third parties
  • Host, mirror, or archive the dataset on any external website, repository, or storage service
  • Upload the dataset to any public or institutional data repository
  • Provide the data through APIs, automated services, or subscription platforms
  • Incorporate the data into any commercial product, software, application, or service
  • Use the data for AI or machine learning systems intended for commercial use or external distribution
  • Use the data to create derivative datasets that enable reconstruction of the underlying observations
§ 06

Commercial Licensing

Organizations seeking to use Observatory data for commercial purposes must obtain a license prior to any such use. Licensing inquiries: data@bluehill.org.

§ 07

Automated Access

Automated scraping, bulk harvesting, or systematic downloading of Observatory data is strictly prohibited without prior written authorization.

§ 08

Enforcement and Remedies

Violation of this Policy may result in immediate revocation of data access, pursuit of legal remedies available under United States law, and referral to applicable authorities. The Observatory reserves all rights to seek injunctive relief, damages, and attorneys’ fees in connection with any unauthorized use of its data.

Part II — Privacy Policy
§ 09–10

Scope & Information Collected

This section governs the collection, use, storage, and disclosure of personal information from visitors to the Blue Hill Observatory website and users of its data services. The Observatory may collect contact information (name, email, organization) when voluntarily submitted, usage data including IP addresses and pages visited, and data download records.

§ 11–12

How We Use Information & Retention

Information is used solely for: responding to inquiries and licensing requests; monitoring and enforcing compliance with this Policy; improving website performance; and communicating Observatory news to opted-in users. The Observatory does not sell, rent, or share personal information with third parties for marketing purposes. Data access records may be retained indefinitely for compliance and enforcement purposes.

§ 13

International Users and Data Transfers

The Observatory is located in the United States. International users acknowledge their information will be processed in the United States under U.S. law. Users requiring specific data processing agreements under non-US law must contact data@bluehill.org before accessing data.

§ 14–16

Cookies, Security & Children’s Privacy

The Observatory website may use cookies for analytics and functionality. By continuing to use the site, users consent to cookie use. The Observatory implements reasonable measures to protect personal information but cannot guarantee absolute security. Observatory data services are not directed at children under 13.

Part III — General Provisions
§ 17–20

Modifications, Severability, Entire Agreement & Contact

The Observatory reserves the right to modify this Policy at any time. Updated versions will be posted at bluehill.org. Continued use of Observatory data following any modification constitutes acceptance of the revised Policy. This Policy constitutes the entire agreement between the User and the Observatory. Questions and licensing inquiries: Blue Hill Observatory & Science Center, Milton, Massachusetts — data@bluehill.org

By accessing, downloading, or using any Blue Hill Observatory data or services, you acknowledge that you have read, understood, and agree to be bound by this Policy.
Effective January 1, 2025 · Blue Hill Observatory & Science Center · Milton, Massachusetts