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June 2016 Summary – Seventh Sunniest on Record

July 5, 2016

Blue Hill Observatory June 2016 Summary: The month was notable for being generally warm and dry with much more sun than average. The…

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Blue Hill Observatory
June 2016 Summary:

The month was notable for being generally warm and dry with much more sun than average. The 24-hour mean temperature for the month of 66.6 deg F was 2.5 degrees warmer than the 120-year average for June and more than a degree warmer than the 1981-2010 30-year average. The highest temperature for the month was 86F on the 26th and 30th, and the low temperature of 48F occurred on the 9th. There were no daily temperature records during the month. The 12-month average temperature from July 2015 through June 2016 was 52.0 deg F, which was the second warmest for this period on record.  Since the heating degree day season also extends from July through June, the total heating degree days for the 2015-2016 season of 5282 finished as the second lowest since 1885. The total cooling degree days during the month was 109, which was four more than average. The first ripe blueberries of the season were observed on the summit of Great Blue Hill on June 7th. This date ties for the second earliest on record and continues a slow trend to earlier dates each year. June precipitation totaled 1.62 inches, which was about two inches less than the long-term 120-year average and more than two a half inches less than the 30-year mean. Nearly half of the monthly total and the greatest amount in 24 hours, 0.76 inches, fell on the 5th. There were five days with thunderstorms in June, which is one more than average, and the annual total is now up to seven. The mean wind speed was 11.6 mph, with a prevailing direction from the south, and this direction was observed in an unusually high 24 percent of the hours during the month. The peak gust was 41 mph from the west-northwest on the 8th and from the west on the 12th. June sunshine was well above average with 69 percent of the possible bright sunshine being observed, which was 14 percent more than the long-term average, and the total duration of sunshine, 301.6 hours, ranked as the seventh highest on record for any June.

BHO Sunniest June, hours (1886-2016):

1) 336.5 in 1971 [76%] 2) 335.5 in 1908 [76%] 3) 327.4 in 1953 [74%] 4) 322.6 in 1949 [73%] 5) 313.7 in 1912 [71%] 6) 309.1 in 1965 [70%] 7) 301.6 in 2016 [69%]
8) 295.7 in 1978 [68%] 9) 295.3 in 1979 [68%] 10) 293.7 in 1901 [67%]

BHO Earliest Date of First Ripe Blueberry (1886-2016):

1) 5 June in 2012
2) 7 June in 2011
   7 June in 2016
4) 9 June in 1934
   9 June in 1944
6) 10 June in 1922
   10 June in 1991
   10 June in 1994

BHO Warmest July-June Temperature, deg F (1885-2016):

1) 52.5 in 2011-2012
2) 52.0 in 2015-2016
3) 51.0 in 1990-1991
4) 50.9 in 2001-2002
5) 50.6 in 1998-1999

BHO Fewest July-June Heating Degree Days, (1885-2016):

1) 4984 in 2011-2012
2) 5282 in 2015-2016
3) 5338 in 2001-2002
4) 5458 in 1990-1991
5) 5633 in 1998-1999

 

Mike Iacono
Chief Scientist
Blue Hill Observatory

 

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