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Tuesday, July 8, 2025

July 8, 2025

BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA TUESDAY, JULY 8, 2025 ALL TIMES ARE…

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BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA TUESDAY, JULY 8, 2025 ALL TIMES ARE IN EASTERN STANDARD TIME (EST) SUNRISE: 0416E SUNSET:  1923E HOT AND HUMID CONDITIONS CONTINUE WITH INCREASING CLOUDS…. Mainly sunny skies this morning have become mainly cloudy with only a few breaks by this afternoon. Regardless, it’s still quite hot and humid out there having reached 90F degrees again for the 10th time this summer already. We only had a total of 10 such days for all of 2024! As mentioned, temperatures have reached the low to mid 90s early this afternoon after an overnight temperature that only fell to 73F. With the dew point in the low to mid 70s, the heat index has been pushing, and even exceeding 100F degrees today. Today should be the last day of this level of heat for several days. Humidity levels however will likely remain on the high side through the rest of the week at least. The wind has been lighter today for the most part, but did increase a bit this afternoon over the levels this morning. A mainly westerly wind has been averaging at around 9mph for the day so far. Gusts have picked up a bit from time to time, with two distinct periods of more frequent and stronger gusts occurring back in the wee hours of this morning, and again this afternoon. The peak gust so far for the day is 22mph, occurring just after 2:30pm this afternoon. Visibility has improved a bit from around 20 miles early this morning to around 50 miles by early this afternoon. The maximum temperature so far today is 94F degrees, which is 13 degrees above the normal high of 81F. The minimum temperature since midnight is 73F degrees, which is 10 degrees above the normal low of 63F. ————————————————————– Today’s Observations: 7 A.M. Weather: Broken altocumulus/castellanus, broken cirrostratus, few stratus fractus all quadrants Temperature: 76F; Dew Point: 74F; Relative Humidity: 91% Wind: WSW @ 6 kts, wind light Sea-level pressure: 1014.4 mb; 29.96 in. Hg: rising, then more rapidly Visibility: 20 miles, thin fog 6-hr Max temp: 76F 6-hr Min temp: 73F 24-hr Precip:  0.01 inches BHO SA 1155 E150 BKN 200 BKN 20 144/76/74/2506/996/ FEW STFRA ALQDS THN F ALQDS WND LGT/ 8/785 53006 10076 20073 10 A.M. Weather: Broken cumulus, broken altostratus, broken cirrostratus, broken cirrus Temperature: 89F; Dew Point: 73F; Relative Humidity: 58% Heat Index: 97F Wind: WNW @ 7 kts Sea-level pressure: 1014.7 mb; 29.96 in. Hg: falling, then rising Visibility: 40 miles, hazy 3-hr Precip: 0.00 inches BHO SA 1455 E30 BKN 150 BKN 220 BKN 250 BKN 40 147/89/73/3007/996/ HAZY HX97/ 8/255 53003 1 P.M. Weather: Broken cumulus, broken altocumulus, broken cirrostratus, moderate cumulus all quadrants Temperature: 93F Dew Point: 72F; Relative Humidity: 51%; Heat Index: 101F Wind: WNW @ 9G18 kts Sea-level pressure: 1014.4 mb; 29.96 in. Hg: rising, then falling Visibility: 50 miles 6-hr Max temp: 94F 6-hr Min temp: 76F 6-hr Precip:  0.00 inches BHO SA 1755 E40 BKN 80 BKN 220 BKN 50 144/93/72/3009G18/996/ MDT CU ALQDS HX 101/ 8/266 58003 10094 20076 ————————————————————– SUMMARY FOR MONDAY, JULY 7, 2025 TEMPERATURE (DEGREES F) MAX…….88  NORMAL…..81 MIN…….69  NORMAL…..63 MEAN……79  NORMAL…..72 DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………….+7 TOTAL DEPARTURE FOR THE MONTH………………………+30 [+4.1 DEGREES/DAY] HEATING DEGREE DAYS (SEASON: JUL 2025 THRU JUN 2026) TOTAL HEATING UNITS FOR YESTERDAY……………..0  DEPARTURE………0 TOTAL HEATING UNITS FOR THE MONTH……………..0  DEPARTURE……..-2 TOTAL HEATING UNITS FOR THE SEASON…………….0  DEPARTURE……..-2 TOTAL HEATING UNITS LAST SEASON TO DATE………..0  DEPARTURE………0 COOLING DEGREE DAYS (SEASON JAN 2025 THRU DEC 2025) TOTAL COOLING UNITS FOR YESTERDAY…………….14  DEPARTURE……..+7 TOTAL COOLING UNITS FOR THE MONTH…………….77  DEPARTURE…….+28 TOTAL COOLING UNITS FOR THE SEASON…………..277  DEPARTURE…….+89 TOTAL COOLING UNITS LAST SEASON TO DATE………240  DEPARTURE…….+37 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)……….E28 SSW  @   04:29 P.M. VECTOR #1 (1-Sec)……….28 SSW  @   04:29 P.M. VECTOR #2 (1-Sec)……….30 SSW  @   02:34 P.M. DAVIS #1……………….30 S    @   05:07 P.M. DAVIS #2 ………………35 S    @   05:51 P.M. RMY #1 (Instantaneous)…..29 SSW  @   05:15 P.M. RMY #2 (Instantaneous)…..30 SW   @   11:30 A.M. MERLIN…………………26 SW RICHARDS (C5C) (Inst)…..OTS FASTEST MILE: CONTACTING ANEMOMETER/OFFICIAL………………20 SSW  @   05:17 P.M. MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..20      @   04:43 P.M. MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..21      @   10:36 P.M. MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………20 S    @   05:09 P.M. MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………23 S    @   11:45 A.M. MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..19 SSW  @   05:52 P.M. MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..21 SSW  @   10:36 P.M. MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE……..OTS AVERAGE WIND SPEED AND DIRECTION: CONTACTING/OFFICIAL……..13.5 SW [324 total miles] VECTOR #1………………13.5 VECTOR #2………………14.2 DAVIS #1……………….13.2 SSW DAVIS #2……………….14.3 SW RMY #1…………………13.2 SW RMY #2…………………14.3 SSW RICHARDS (C5C)…………..OTS PRECIPITATION (INCHES) THROUGH THIS MORNING (EST): TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.01 DEPARTURE…..-0.09 TOTAL PRECIPITATION FOR THE MONTH…………..0.20 DEPARTURE…..-0.57 TOTAL PRECIPITATION FOR THE YEAR (2025)…….23.43 DEPARTURE…..-4.57 ————————————————————– PRELIMINARY CLIMATE SUMMARY FOR JULY 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 7/1   90/68/79/+8/0.14/411/45           38 W   VEC1 38 W   RMY 41 TSTM 7/2   85/69/77/+6/0.02/247/27           23 WSW VEC1 24 WSW RMY 24 7/3   88/63/76/+4/0.03/…/..           39 SW  VEC1 39 SW  RMY 40 TSTM 7/4   80/60/70/-2/0.00/…/..           28 NNW VEC1 27 NNW RMY 29 7/5   83/61/72/0/0.00/…/..            23 W   VEC1 23 W   RMY 24 7/6   92/65/79/+7/0.00/…/..           29 SW  VEC1 29 SW  RMY 29 7/7   88/69/79/+7/0.01/…/..           28 SSW VEC1 28 SSW RMY 29 TSTM 7/8 The low since midnight is 73F, the daily normal low is 63F. ————————————————————– JULY DAILY RECORDS TO DATE NONE. ————————————————————– DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated) RECORDS FOR JULY 8 HIGH 95F IN 1981 LOW 50F IN 1919 PRECIP 1.74 INS IN 1916 PEAK GUST 46e SSW IN 1941 RECORDS FOR JULY 9 HIGH 98F IN 1912 LOW 47F IN 1909 PRECIP 3.74 INS IN 1921 WIND 46 MPH NW IN 1992 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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