Sign In Become a Member
Donate
Daily Discussions

Tuesday, June 9, 2026

June 9, 2026

BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA TUESDAY, JUNE 9, 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

TUESDAY, JUNE 9, 2026
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0407E
SUNSET:  1920E

MAINLY SUNNY AND WARM TODAY WITH CONTINUED COMFORTABLE HUMIDITY….

Today has again featured plenty of sunshine with pleasantly a
dry air mass and warm temperatures. A few high clouds have been
passing over throughout the day with only some widely scattered
convective clouds showing up late this morning through this
afternoon.

Temperatures are warmer than yesterday with readings reaching
the low 80s this afternoon. This is nearly 10 degrees above
normal, but with dew points holding in the mid 50s, it’s still
rather comfortable to be outdoors.

Winds have been fairly steady through the day. A general west
flow has been averaging around 12mph for the day so far. It has
been a bit gusty at times, but nothing overwhelming at all. The
peak gust for the day so far is 26mph, which occurred around
8:45am this morning.

Visibility has been decent all day with a view of around 50
miles. There is some haziness out there due to pollen as is
the usual at this time of year.

The maximum temperature so far today is 82F degrees, which is
9 degrees above the normal high of 73F. The minimum temperature
since midnight is 56F degrees, which is equal to the normal low
of 56F.

————————————————————–

Today’s Observations:

7 A.M.
Weather: Clear, few cirrus distant NNW-SE
Temperature: 64F; Dew Point: 52F; Relative Humidity: 65%
Wind: W @ 10 kts
Sea-level pressure: 1023.4 mb; 30.22 in. Hg: rising, then falling
Visibility: 50 miles
6-hr Max temp: 64F
6-hr Min temp: 56F
24-hr Precip: 0.00 inches
BHO SA 1155 CLR 50 234/64/52/2710/022/ FEW CI DSNT NNW-SE/
8/001 50000 10064 20056

10 A.M.
Weather: Thin scattered cirrus, few cumulus distant SSW-W and
distant NW-NNW
Temperature: 75F; Dew Point: 57F; Relative Humidity: 53%
Wind: WSW @ 9G16 kts
Sea-level pressure: 1022.3 mb; 30.19 in. Hg: falling, then more rapidly
Visibility: 50 miles, hazy
3-hr Precip: 0.00 inches
BHO SA 1455 250 -SCT 50 223/75/57/2509G16/019/ FEW CU DSNT SSW-W
AND DSNT NW-NNW HAZY/ 8/201 58011

1 P.M.
Weather: Clear, few cumulus E-S-NW
Temperature: 79F; Dew Point: 57F; Relative Humidity: 46%
Wind: WSW @ 10G17 kts
Sea-level pressure: 1019.9 mb; 30.12 in. Hg: falling, then more rapidly
Visibility: 50 miles, hazy
6-hr Max temp: 80F
6-hr Min temp: 64F
6-hr Precip: 0.00 inches
BHO SA 1755 CLR 50 199/79/57/2510G17/012/ FEW CU DSNT E-S-NW
HAZY/ 8/201 58024 10080 20064

————————————————————–

SUMMARY FOR MONDAY, JUNE 8, 2026

TEMPERATURE (DEGREES F)
MAX…….77   NORMAL…..73
MIN…….52   NORMAL…..55
MEAN……65   NORMAL…..64

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………….+1
TOTAL DEPARTURE FOR THE MONTH………………………+33 [+3.9 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2025 THRU JUN 2026)
TOTAL HEATING UNITS FOR YESTERDAY……………..0  DEPARTURE……..-3
TOTAL HEATING UNITS FOR THE MONTH (JUN)……….17  DEPARTURE…….-16
TOTAL HEATING UNITS FOR THE SEASON………….6084  DEPARTURE…….-93
TOTAL HEATING UNITS LAST SEASON TO DATE……..5635  DEPARTURE……+449

COOLING DEGREE DAYS (SEASON: JAN 2026 THRU DEC 2026)
TOTAL COOLING UNITS FOR YESTERDAY……………..0  DEPARTURE……..-2
TOTAL COOLING UNITS FOR THE MONTH (JUN)……….33  DEPARTURE…….+17
TOTAL COOLING UNITS FOR THE SEASON……………92  DEPARTURE…….+48
TOTAL COOLING UNITS LAST SEASON TO DATE……….43  DEPARTURE…….+49

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)………..20 SW   @   10:23 P.M.*
VECTOR #1 (1-Sec)……….20 SW   @   09:32 P.M.*
VECTOR #2 (1-Sec)……….21 NE   @   03:43 A.M.
DAVIS #1……………….20 NE   @   12:00 A.M.
DAVIS #2 ………………20 ENE  @   03:43 A.M.
RMY #1 (Instantaneous)…..21 NE   @   12:00 A.M.
RMY #2 (Instantaneous)…..22 NE   @   03:43 A.M.
MERLIN………………….M
RICHARDS (C5C) (Inst)……19 SW   @   10:00 P.M.

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………14 SW   @   09:29 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..15 SW   @   09:28 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..15 SW   @   09:28 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………14 SW   @   09:28 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………15 SW   @   09:28 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..14 SSW  @   06:57 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..15 SW   @   09:28 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………14 SW   @   11:31 P.M.

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL………7.4 SW [178 total miles] VECTOR #1……………….8.1
VECTOR #2……………….8.4
DAVIS #1………………..7.9 NNW
DAVIS #2………………..7.9 NNE
RMY #1………………….8.0 NNW
RMY #2………………….8.3 NNW
RICHARDS (C5C)…………..8.2

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.16
TOTAL PRECIPITATION FOR THE MONTH (JUN)……..0.35 DEPARTURE…..-0.94
TOTAL PRECIPITATION FOR THE YEAR (2026)…….17.15 DEPARTURE…..-6.74

————————————————————–

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  60/45/53/-9/T/606/67                26 ENE VEC1 27 ENE RMY 27
6/2  75/45/60/-2/0.00/680/75             22 NNW VEC1 22 NNW RMY 21
6/3  82/56/69/+7/0.00/880/97             28 S   VEC1 28 S   RMY 29
6/4  88/57/73/+10/0.00/817/90            23 WNW VEC1 23 SW  RMY 23
6/5  87/60/74/+11/0.00/810/89            20 NW  VEC1 19 NW  RMY 21
6/6  86/64/75/+12/0.09/232/31            46 WSW VEC1 45 WSW RMY 48
6/7  78/55/67/+3/0.26/…/..             38 NE  VEC1 38 NE  RMY 42
6/8  77/52/65/+1/0.00/…/..             20 SW  VEC1 20 SW  RMY 21

6/9 The low since midnight is 56F, the daily normal low is 56F.

————————————————————–

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 9
HIGH 94F IN 2008
LOW 40F IN 1980
PRECIP 2.08 INCHES IN 1931
PEAK GUST 67 MPH NW IN 1973

RECORDS FOR JUNE 10
HIGH 98F IN 2008
LOW 42F IN 1913, 1920
PRECIP 2.51 INCHES IN 1931
PEAK GUST 60e MPH NW IN 1941

TODAY’S REPORT PREPARED BY: Matt Douglas

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