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Sunday, June 29, 2025

June 29, 2025

BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA SUNDAY, JUNE 29, 2025 ALL TIMES ARE…

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BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA SUNDAY, JUNE 29, 2025 ALL TIMES ARE IN EASTERN STANDARD TIME (EST) SUNRISE: 0410E SUNSET:  1925E EARLY FOG BURNS OFF TO MAINLY SUNNY SKIES; WARM AND HUMID CONDITIONS RETURN…. We started the day in the clouds with visibility only around 1/16th of a mile. The fog and low clouds quickly burned off and by mid morning sunshine had taken over mixed with only a few cumulus and cirrus clouds. Temperatures have warmed into the mid to upper 80s, so we’re back to being above normal after a couple of days of a reprieve. The dew point has been in the mid to upper 60s all day, so it feels quite muggy out there today as well. Winds started the day on the light side, even going calm for a time. However it has increased a bit by late morning and into early this afternoon. The average speed for the day so far is around 8mph. The peak gust so far is 24mph, which occurred just after 10:30am this morning. As mentioned, the visibility was quite limited to around 1/16th of a mile early this morning due to the dense fog, but has improved quite a bit to around 50-60 miles by late this morning and early this afternoon. The maximum temperature for today is 88F degrees, which is 8 degrees above the normal high of 80F. The minimum temperature since midnight is 62F degrees, which is equal to the normal low of 62F. ————————————————————– Today’s Observations: 7 A.M. Weather: Sky obscured, vertical visibility 100ft Temperature: 67F; Dew Point: 67F; Relative Humidity: 100% Wind: WNW @ 2 kts, wind light Sea-level pressure: 1015.5 mb; 29.99 in. Hg: rising, then more slowly Visibility: 1/16 mile, fog 6-hr Max temp: 67F 6-hr Min temp: 63F 24-hr Precip:  0.03 inches BHO SA 1155 X W2 1/16F 155/67/67/3002/999/ SUN DMLY VSBL WND LGT/ 8//// 51009 70003 10067 20063 10 A.M. Weather: Broken cumulus, broken cirrus, fog bank distant NNE-ENE Temperature: 81F; Dew Point: 66F; Relative Humidity: 59% Wind: W @ 9G16 kts Sea-level pressure: 1014.9 mb; 29.97 in. Hg: falling steadily Visibility: 50 miles, 15 miles NNE-ENE 3-hr Precip: 0.00 inches BHO SA 1455 E30 BKN 250 BKN 50 149/81/66/2709G16/997/ F BNK DSNT NNE-ENE VSBY 15 NNE-ENE/ 8/202 57006 1 P.M. Weather: Clear, few cumulus all quadrants, few cirrus distant ESE-S-WSW and distant NW-NNE, fog bank offshore distant NNE-ENE Temperature: 87F Dew Point: 65F; Relative Humidity: 47% Wind: W @ 7 kts Sea-level pressure: 1014.4 mb; 29.96 in. Hg: falling, then more rapidly Visibility: 60 miles 6-hr Max temp: 88F 6-hr Min temp: 67F 6-hr Precip:  0.00 inches BHO SA 1755 CLR 60 144/87/65/2707/996/ FEW CU ALQDS FEW CI DSNT ESE-S-WSW AND DSNT NW-NNE F BNK OFFSHR DSNT NNE-ENE/ 8/202 58005 10088 20067 ————————————————————– SUMMARY FOR SATURDAY, JUNE 28, 2025 TEMPERATURE (DEGREES F) MAX…….72  NORMAL…..79 MIN…….58  NORMAL…..62 MEAN……65  NORMAL…..70 DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………….-5 TOTAL DEPARTURE FOR THE MONTH………………………+78 [+2.6 DEGREES/DAY] HEATING DEGREE DAYS (SEASON: JUL 2024 THRU JUN 2025) TOTAL HEATING UNITS FOR YESTERDAY……………..0  DEPARTURE……..-1 TOTAL HEATING UNITS FOR THE MONTH…………….50  DEPARTURE…….-15 TOTAL HEATING UNITS FOR THE SEASON………….5665  DEPARTURE……-544 TOTAL HEATING UNITS LAST SEASON TO DATE……..5392  DEPARTURE……+273 COOLING DEGREE DAYS (SEASON JAN 2025 THRU DEC 2025) TOTAL COOLING UNITS FOR YESTERDAY……………..0  DEPARTURE……..-6 TOTAL COOLING UNITS FOR THE MONTH……………160  DEPARTURE…….+62 TOTAL COOLING UNITS FOR THE SEASON…………..177  DEPARTURE…….+51 TOTAL COOLING UNITS LAST SEASON TO DATE………166  DEPARTURE…….+11 PEAK WIND GUST (MPH): Note: Instruments designated #1 = Main Tower, #2 = South Tower, F420C, Contacting, Merlin, and Richards are all on Main Tower. E=Estimated F420C (Official)……….E20 SSE  @   04:36 A.M. VECTOR #1 (1-Sec)……….20 SSE  @   04:36 A.M. VECTOR #2 (1-Sec)……….20 SSE  @   05:40 A.M. DAVIS #1……………….21 S    @   05:27 A.M. DAVIS #2 ………………25 S    @   04:18 A.M. RMY #1 (Instantaneous)…..20 SSE  @   04:36 A.M. RMY #2 (Instantaneous)…..21 SSE  @   05:04 A.M. MERLIN………………….M RICHARDS (C5C) (Inst)…..OTS FASTEST MILE: CONTACTING ANEMOMETER/OFFICIAL………………14 S    @   05:18 A.M. MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..15      @   04:58 A.M. MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..15      @   05:31 A.M. MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………14 S    @   05:28 A.M. MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………18 S    @   12:52 A.M. MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..14 S    @   04:58 A.M. MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..15 S    @   12:56 A.M. MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS AVERAGE WIND SPEED AND DIRECTION: CONTACTING/OFFICIAL………6.1 S [146 total miles] VECTOR #1……………….6.8 VECTOR #2……………….7.2 DAVIS #1………………..6.3 SSE DAVIS #2………………..6.8 SSE RMY #1………………….6.7 SSE RMY #2………………….7.3 SSE RICHARDS (C5C)…………..OTS PRECIPITATION (INCHES) THROUGH THIS MORNING (EST): TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.03 DEPARTURE…..-0.10 TOTAL PRECIPITATION FOR THE MONTH…………..1.49 DEPARTURE…..-2.88 TOTAL PRECIPITATION FOR THE YEAR (2025)…….23.23 DEPARTURE…..-3.74 ————————————————————– PRELIMINARY CLIMATE SUMMARY FOR JUNE CALENDAR DAY DATA DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN)/SUN(%)/PEAK GUST/VEC1/RMY GUST PEAK GUST: F420C (Official) VEC1: Vector #1 1-second gust RMY:  R.M. Young #1 wind gust recording system (Instantaneous) TSTM: Thunderstorm day (thunder heard some time during day) ….: Data not yet available, records not finalized M:    Missing data 6/1   63/47/55/-7/0.01/588/65           40 W   VEC1 40 W   RMY 42 6/2   70/48/59/-3/T/780/86              25 WNW VEC1 25 WSW RMY 26 6/3   79/50/65/+3/0.00/853/94           23 SSW VEC1 23 SSW RMY 21 6/4   84/58/71/+8/0.00/708/78           26 SW  VEC1 27 SW  RMY 28 6/5   93/61/77/+14/0.00/819/90          18 WSW VEC1 18 SW  RMY 19 6/6   81/63/72/+9/0.00/382/42           26 ENE VEC1 27 NE  RMY 27 6/7   71/60/66/+2/0.95/000/00           26 NE  VEC1 26 NE  RMY 25 TSTM 6/8   67/55/61/-3/0.00/347/38           22 ENE VEC1 21 ENE RMY 22 6/9   61/55/58/-6/0.01/000/00           20 E   VEC1 21 E   RMY 20 6/10  62/54/58/-7/0.20/000/00           21 W   VEC1 20 W   RMY 20 6/11  81/58/70/+5/0.00/850/93           32 WSW VEC1 32 WSW RMY 33 6/12  85/64/75/+10/0.00/814/89          47 WNW VEC1 47 WNW RMY 49 6/13  76/57/67/+1/T/631/69              20 E   VEC1 20 E   RMY 20 6/14  58/54/56/-10/0.09/000/00          24 NE  VEC1 24 NE  RMY 24 6/15  67/53/60/-6/0.00/449/49           18 E   VEC1 18 E   RMY 17 6/16  73/52/63/-4/0.00/641/70           20 SE  VEC1 20 ESE RMY 20 6/17  74/57/66/-1/0.12/028/03           22 S   VEC1 22 S   RMY 23 6/18  75/63/69/+2/0.02/018/02           22 SSW VEC1 23 SSW RMY 23 6/19  90/66/78/+10/0.00/523/57          31 SSW VEC1 31 SSW RMY 31 6/20  81/66/74/+6/0.00/853/93           52 WNW VEC1 52 WNW RMY 54 6/21  86/61/74/+6/0.00/871/95           22 NW  VEC1 22 NW  RMY 21 6/22  91/68/80/+11/0.03/477/52          32 W   VEC1 32 W   RMY 32 6/23  94/71/83/+14/0.00/807/88          22 SSW VEC1 22 SSW RMY 22 6/24  99/76/88/+19/0.00/880/96          28 W   VEC1 27 W   RMY 26 6/25  93/76/85/+15/0.00/824/90          20 NW  VEC1 20 NW  RMY 20 6/26  77/58/68/-2/0.03/000/00           30 E   VEC1 30 E   RMY 29 6/27  75/58/67/-3/0.00/522/57           22 S   VEC1 22 S   RMY 22 6/28  72/58/65/-5/0.03/000/00           20 SSE VEC1 20 SSE RMY 20 6/29 The low since midnight is 62F, the daily normal low is 62F. ————————————————————– JUNE DAILY RECORDS TO DATE 6/23 RECORD HIGH MAXIMUM TEMPERATURE OF 94F, BEATING THE PREVIOUS RECORD OF 93F SET IN 1888 6/24 RECORD HIGH MINIMUM TEMPERATURE OF 76F, BEATING THE PREVIOUS RECORD OF 70F SET IN 1909 6/24 RECORD HIGH MAXIMUM TEMPERATURE OF 99F, BEATING THE PREVIOUS RECORD OF 91F SET IN 1914, 1976, 2013 THIS ALSO TIED THE HIGHEST JUNE TEMPERATURE WITH JUNE 4 1919 6/25 RECORD HIGH MINIMUM TEMPERATURE OF 76, BEATING THE PREVIOUS RECORD OF 71F SET IN 1909 6/25 RECORD HIGH MAXIMUM TEMPERATURE OF 93F, TIED WITH PREVIOUS OCCURRENCES IN 1943, 1980, 2005 ————————————————————– DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated) RECORDS FOR JUNE 29 HIGH 95F IN 2021 LOW 42F IN 1919 PRECIP 1.60 INS IN 1889 PEAK GUST 49 MPH S IN 1957 RECORDS FOR JUNE 30 HIGH 94F IN 1964 LOW 47F IN 1919 PRECIP 3.04 INS IN 1921 PEAK GUST 51 MPH WNW IN 1957 TODAY’S REPORT PREPARED BY: MFD
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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
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