Sign In Become a Member
Donate
Daily Discussions

Friday, June 5, 2026

June 5, 2026

BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA FRIDAY, JUNE 5, 2026 ALL TIMES ARE…

Agreement required — click “Accept & Continue” below to review and accept the Data Use & Privacy Policy

Access to this content requires acceptance of our Data Use & Privacy Policy.

BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA

FRIDAY, JUNE 5, 2026
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0408E
SUNSET:  1917E

SUMMER-LIKE HEAT CONTINUES WITH INCREASE IN DEW POINTS AND
LIGHT WESTERLY FLOW….

Today feels similar to yesterday, though a tad more warm as
dew points have been a bit warmer. This morning we were under
scattered cirrus clouds and have increased to more cirrus
throughout the morning and afternoon, but we still have had
plenty of sunshine out there.

Temperatures overnight only dropped to around 60F. So with high
pressure, all day sunshine and light winds, temperatures were
quick to climb today. The first observation was near 69F and by
the final observation we hit 86F. Fortunately, dew points have
fluctuated a bit, but have still been in the mid to upper 50s,
giving a feel of a midsummer day instead of early June.

Winds were out of the west-northwest and northwest for much of
the early half of the day before shifting more westerly in the
afternoon hours. Winds have been on the light side with some
smaller breezes in the 10-15mph range. The average speed for
the day so far is around 9mph. The peak gust so far for the day
is 19mph, which occurred just after 1pm this afternoon.

Visibility has been limited for yet another day today due to the
high pollen count. The view started at around 40 miles early this
morning, but has lowered to around 35 miles by late this morning
and through the early afternoon.

The maximum temperature so far today is 86F degrees, which is
14 degrees above the normal high of 72F. The minimum temperature
since midnight is 60F degrees, which is 6 degrees above the
normal low of 54F.

————————————————————–

Today’s Observations:

7 A.M.
Weather: Scattered cirrus
Temperature: 69F; Dew Point: 55F; Relative Humidity: 60%
Wind: NW @ 7 kts
Sea-level pressure: 1015.4 mb; 29.99 in. Hg: rising, then more slowly
Visibility: 40 miles
6-hr Max temp: 69F
6-hr Min temp: 60F
24-hr Precip: 0.00 inches
BHO SA 1155 250 SCT 40 154/69/55/3107/999/ 8/001 51003 10069 20060

10 A.M.
Weather: Broken cirrus
Temperature: 82F; Dew Point: 56F; Relative Humidity: 41%
Wind: NW @ 4 kts, wind light
Sea-level pressure: 1015.0 mb; 29.97 in. Hg: falling, then more slowly
Visibility: 35 miles, hazy
3-hr Precip: 0.00 inches
BHO SA 1455 250 BKN 35 150/82/56/3204/997/ WND LGT HAZY/ 8/001 56004

1 P.M.
Weather: Broken cirrus
Temperature: 86F; Dew Point: 56F; Relative Humidity: 36%
Wind: WNW @ 5 kts, wind light
Sea-level pressure: 1013.6 mb; 29.93 in. Hg: falling, then more rapidly
Visibility: 35 miles, hazy
6-hr Max temp: 86F
6-hr Min temp: 69F
6-hr Precip: 0.00 inches
BHO SA 1755 250 BKN 35 136/86/56/2805/993/ WND LGT HAZY/ 8/001
58014 10086 20069

————————————————————–

SUMMARY FOR THURSDAY, JUNE 4, 2026

TEMPERATURE (DEGREES F)
MAX…….88   NORMAL…..72
MIN…….57   NORMAL…..54
MEAN……73   NORMAL…..63

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……………+10
TOTAL DEPARTURE FOR THE MONTH……………………….+6 [-1.3 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2025 THRU JUN 2026)
TOTAL HEATING UNITS FOR YESTERDAY……………..0  DEPARTURE……..-4
TOTAL HEATING UNITS FOR THE MONTH (JUN)……….17  DEPARTURE……..-1
TOTAL HEATING UNITS FOR THE SEASON………….6084  DEPARTURE…….-79
TOTAL HEATING UNITS LAST SEASON TO DATE……..5631  DEPARTURE……+453

COOLING DEGREE DAYS (SEASON: JAN 2026 THRU DEC 2026)
TOTAL COOLING UNITS FOR YESTERDAY……………..8  DEPARTURE……..+6
TOTAL COOLING UNITS FOR THE MONTH (JUN)……….12  DEPARTURE……..+5
TOTAL COOLING UNITS FOR THE SEASON……………71  DEPARTURE…….+36
TOTAL COOLING UNITS LAST SEASON TO DATE……….23  DEPARTURE…….+48

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 *=Last of multiple occurrences

F420C (Official)………..23 WNW  @   01:58 P.M.
VECTOR #1 (1-Sec)……….23 SW   @   12:04 A.M.
VECTOR #2 (1-Sec)……….24 SW   @   12:04 A.M.
DAVIS #1……………….23 S    @   04:24 P.M.
DAVIS #2 ………………23 S    @   04:52 P.M.
RMY #1 (Instantaneous)…..23 SSW  @   04:25 P.M.
RMY #2 (Instantaneous)…..25 SW   @   12:04 A.M.
MERLIN…………………21 SSW
RICHARDS (C5C) (Inst)……24 WSW  @   12:48 A.M.

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………17 SSW  @   04:26 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..17 SW   @   12:10 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..18 SSW  @   04:26 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………17 SW   @   12:10 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………16 SSW  @   04:26 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..17 SW   @   04:27 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..18 SSW  @   04:26 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………16 SSW  @   04:26 P.M.

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL………9.3 WSW [222 total miles] VECTOR #1……………….9.8
VECTOR #2………………10.1
DAVIS #1………………..9.7 SW
DAVIS #2………………….M
RMY #1………………….9.8 WSW
RMY #2…………………10.1 SW
RICHARDS (C5C)…………..9.6

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.17
TOTAL PRECIPITATION FOR THE MONTH (JUN)…….TRACE DEPARTURE…..-0.64
TOTAL PRECIPITATION FOR THE YEAR (2026)…….16.80 DEPARTURE…..-6.44

————————————————————–

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  60/45/53/-9/T/…/..                26 ENE VEC1 27 ENE RMY 27
6/2  75/45/60/-2/0.00/…/..             22 NNW VEC1 22 NNW RMY 21
6/3  82/56/69/+7/0.00/…/..             28 S   VEC1 28 S   RMY 29
6/4  88/57/73/+10/0.00/…/..            23 WNW VEC1 23 SW  RMY 23

6/5 The low since midnight is 60F, the daily normal low is 54F.

————————————————————–

JUNE DAILY RECORDS TO DATE

NONE.

————————————————————–

DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)

RECORDS FOR JUNE 5
HIGH 95F IN 1930
LOW 41F IN 1891
PRECIP 2.83 INS IN 1982
PEAK GUST 57 MPH NNW IN 1988

RECORDS FOR JUNE 6
HIGH 95F IN 1925
LOW 42F IN 1885, 1894, 1945
PRECIP 3.61 INS IN 2000
PEAK GUST 58 MPH NE IN 2000

TODAY’S REPORT PREPARED BY: Amanda Joly

Please follow and like us:
error
fb-share-icon
Tweet
fb-share-icon
←
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
↓ Scroll to read the full Policy — the agreement checkbox will unlock at the bottom