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Thursday, August 28, 2025

August 28, 2025

BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA THURSDAY, AUGUST 28, 2025 ALL TIMES ARE…

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BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA THURSDAY, AUGUST 28, 2025 ALL TIMES ARE IN EASTERN STANDARD TIME (EST) SUNRISE: 0505E SUNSET:  1824E PLENTY OF SUNSHINE THIS MORNING, THEN INCREASING CLOUDS…. We started the day with clear skies and plenty of sunshine, but as the day has progressed, clouds have been on the increase as we moved through the late morning and early afternoon hours. So far, the clouds have been mainly of the cirrus variety, thus filtered sunshine is still being observed. Temperatures have warmed into the mid to upper 70s after starting the day once again in the mid 50s. Dew point values are very comfortable for this time of year with readings dropping into the upper 40s! The wind has been fairly steady today averaging at around 9mph. It started off out of the west-northwest, but has backed around more to the west-southwest as we got into the early afternoon hours. The peak gust for the day so far is 22mph, which occurred just before 11:40am this morning. Visibility is quite decent again today with a view of around 70 miles. The maximum temperature so far today is 77F degrees, which is 2 degrees below the normal high of 79F. The minimum temperature since midnight is 54 degrees, which is 7 degrees below the normal low of 61F. ————————————————————– Today’s Observations: 7 A.M. Weather: Clear, few cirrus all quadrants Temperature: 58F; Dew Point: 48F; Relative Humidity: 69% Wind: W @ 8 kts Sea-level pressure: 1021.7 mb; 30.17 in. Hg: rising, then more rapidly Visibility: 70 miles 6-hr Max temp: 58F 6-hr Min temp: 52F 24-hr Precip: 0.00 inches BHO SA 1155 CLR 70 217/58/48/2708/017/ FEW CI ALQDS/ 8/001 53009 70000 10058 20052 10 A.M. Weather: Thin scattered cirrus, few cumulus distant W-NW-NNE and distant ESE-SE Temperature: 70F; Dew Point: 48F; Relative Humidity: 45% Wind: W @ 7 kts Sea-level pressure: 1021.9 mb; 30.18 in. Hg: rising, then falling Visibility: 70 miles 3-hr Precip: 0.00 inches BHO SA 1455 250 -SCT 70 219/70/48/2707/018/ FEW CU DSNT W-NW-NNE AND DSNT ESE-SE/ 8/201 50002 1 P.M. Weather: Thin broken cirrus, few cumulus all quadrants Temperature: 76F Dew Point: 48F; Relative Humidity: 38% Wind: W @ 8G14 kts, wind SW variable WNW Sea-level pressure: 1020.4 mb; 30.13 in. Hg: falling steadily Visibility: 70 miles 6-hr Max temp: 77F 6-hr Min temp: 58F 6-hr Precip: 0.00 inches BHO SA 1755 E250 -BKN 70 204/76/48/2608G14/013/ FEW CU ALQDS WND 23V30/ 8/201 57015 10077 20058 ————————————————————– SUMMARY FOR WEDNESDAY, AUGUST 27, 2025 TEMPERATURE (DEGREES F) MAX…….75   NORMAL…..79 MIN…….57   NORMAL…..61 MEAN……66   NORMAL…..70 DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………….-4 TOTAL DEPARTURE FOR THE MONTH………………………-40 [-1.7 DEGREES/DAY] HEATING DEGREE DAYS (SEASON: JUL 2025 THRU JUN 2026) TOTAL HEATING UNITS FOR YESTERDAY……………..0  DEPARTURE……..-1 TOTAL HEATING UNITS FOR THE MONTH…………….16  DEPARTURE……..+8 TOTAL HEATING UNITS FOR THE SEASON……………17  DEPARTURE……..+2 TOTAL HEATING UNITS LAST SEASON TO DATE……….10  DEPARTURE……..+7 COOLING DEGREE DAYS (SEASON JAN 2025 THRU DEC 2025) TOTAL COOLING UNITS FOR YESTERDAY……………..1  DEPARTURE……..-5 TOTAL COOLING UNITS FOR THE MONTH……………161  DEPARTURE…….-28 TOTAL COOLING UNITS FOR THE SEASON…………..672  DEPARTURE…….+97 TOTAL COOLING UNITS LAST SEASON TO DATE………678  DEPARTURE……..-6 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)………..26 WNW  @   03:15 P.M. VECTOR #1 (1-Sec)……….26 NW   @   05:07 P.M. VECTOR #2 (1-Sec)……….28 WNW  @   03:15 P.M. DAVIS #1……………….26 W    @   03:15 P.M. DAVIS #2 ………………25 WNW  @   03:15 P.M. RMY #1 (Instantaneous)…..27 NW   @   05:07 P.M. RMY #2 (Instantaneous)…..27 WNW  @   03:16 P.M. MERLIN…………………26 NW RICHARDS (C5C) (Inst)……26      @   05:07 P.M. FASTEST MILE: CONTACTING ANEMOMETER/OFFICIAL………………18 NW   @   05:08 P.M. MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..18      @   05:08 P.M. MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..21      @   03:16 P.M. MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………19 NW   @   05:08 P.M. MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………20 NW   @   03:17 P.M. MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..18 NW   @   05:08 P.M. MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..20 WNW  @   03:16 P.M. MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………18      @   05:08 P.M. AVERAGE WIND SPEED AND DIRECTION: CONTACTING/OFFICIAL………8.2 NW [197 total miles] VECTOR #1……………….8.5 VECTOR #2……………….9.1 DAVIS #1………………..8.6 NW DAVIS #2………………..8.8 NW RMY #1………………….8.3 NW RMY #2………………….8.9 WNW RICHARDS (C5C)…………..8.9 PRECIPITATION (INCHES) THROUGH THIS MORNING (EST): TOTAL PRECIPITATION 24 HRS ENDING 7 A.M…….TRACE DEPARTURE…..-0.12 TOTAL PRECIPITATION FOR THE MONTH…………..1.82 DEPARTURE…..-1.62 TOTAL PRECIPITATION FOR THE YEAR (2025)…….31.27 DEPARTURE…..-2.87 ————————————————————– PRELIMINARY CLIMATE SUMMARY FOR AUGUST 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 8/1   71/57/64/-9/0.44/546/63            28 NE  VEC1 28 NE  RMY 27 8/2   75/54/65/-8/0.00/838/97            18 NNW VEC1 18 NNW RMY 18 8/3   83/59/71/-2/0.00/784/91            21 SSW VEC1 21 SSW RMY 21 8/4   84/61/73/0/0.00/757/88             17 W   VEC1 17 W   RMY 17 8/5   73/62/68/-5/0.00/480/56            28 NE  VEC1 27 NE  RMY 28 8/6   77/61/69/-4/0.00/248/29            17 ENE VEC1 17 ENE RMY 16 8/7   81/61/71/-2/0.00/665/78            18 ESE VEC1 18 ESE RMY 17 8/8   83/61/72/0/0.00/834/98             21 SSW VEC1 21 SSW RMY 21 8/9   83/60/72/0/0.00/814/96             22 S   VEC1 22 SSW RMY 22 8/10  89/61/75/+3/0.00/761/90            22 S   VEC1 22 S   RMY 21 8/11  94/67/81/+9/0.00/792/94            20 W   VEC1 19 W   RMY 19 8/12  93/68/81/+9/0.00/806/96            21 SSW VEC1 21 SSW RMY 21 8/13  88/66/77/+5/0.00/344/41            25 SW  VEC1 25 SW  RMY 25 8/14  90/68/79/+7/0.68/426/51            35 NE  VEC1 34 NE  RMY 36 TSTM 8/15  75/63/69/-3/0.00/783/96            29 NE  VEC1 29 ENE RMY 31 8/16  86/62/74/+2/0.00/730/88            23 S   VEC1 24 S   RMY 23 8/17  89/64/77/+5/0.19/414/50            41 NE  VEC1 43 NE  RMY 42 TSTM 8/18  68/55/62/-9/0.00/627/76            32 NE  VEC1 34 NE  RMY 34 8/19  73/54/64/-7/0.00/560/68            20 SE  VEC1 19 SE  RMY 18 8/20  63/51/57-14/0.51/008/01            22 ENE VEC1 22 ENE RMY 21 8/21  67/54/61/-10/T/303/37              36 ENE VEC1 35 NE  RMY 36 8/22  79/53/66/-5/0.00/774/95            24 N   VEC1 25 N   RMY 25 8/23  85/60/73/+2/0.00/771/95            33 SSW VEC1 33 SSW RMY 35 8/24  80/60/70/-1/0.00/632/78            33 SSW VEC1 35 SSW RMY 34 8/25  83/63/73/+3/T/533/66               23 WSW VEC1 22 SW  RMY 23 8/26  77/59/68/-2/0.00/765/95            28 WNW VEC1 27 WNW RMY 28 8/27  75/57/66/-4/T/634/79               26 WNW VEC1 26 NW  RMY 27 8/28 The low since midnight is 52F, the daily normal low is 61F. ————————————————————– AUGUST DAILY RECORDS TO DATE NONE. ————————————————————– DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated) RECORDS FOR AUGUST 28 HIGH 95F IN 1948 LOW 43F IN 1885 PRECIP 1.80 INCHES IN 1922 PEAK GUST 87 MPH SSE IN 1971 (DORIA) RECORDS FOR AUGUST 29 HIGH 95F IN 1953 LOW 41F IN 1982 PRECIP 2.88 INCHES IN 1962 PEAK GUST 70e MPH S IN 1949 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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