Sign In Become a Member
Donate
Daily Discussions

Friday, January 23, 2026

January 23, 2026

BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA FRIDAY, JANUARY 23, 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, JANUARY 23, 2026 ALL TIMES ARE IN EASTERN STANDARD TIME (EST) SUNRISE: 0706E SUNSET:  1647E INCREASING AFTERNOON CLOUDS AS ARCTIC FRONT PUSHES THROUGH…. This morning has featured plenty of sunshine with scattered higher level clouds. There has been plenty of sunshine and a lighter southwesterly flow. By the late morning and early afternoon hours, increasing clouds have been observed, which is indicative of the arctic front approaching. Winds have also increased and have turned more westerly. Temperatures have swung in the other direction from yesterday’s mild spell, and we have yet to reach the average temperature for this time of year. Temperatures dipped down to 21F just before sunrise and despite the mostly sunny conditions, we have only managed to make it to the lower 30s. Dry arctic air has begun to settle over the area, as dew points were in the single digits and low teens throughout the day. The wind was averaging around 10mph for much of the morning but has increased to around 15mph in the past couple of hours. Wind has been mostly out of the west-southwest. The average speed for the day so far is around 12mph. The peak gust for the day so far is 31mph which occurred just before 11am this morning. Visibility has been somewhat limited to around 35-40 miles due to haziness most of the day. The maximum temperature so far today is 32F degrees, which is 2 degrees below the normal high of 34F. The minimum temperature since midnight is 21F degrees, which is 4 degrees above the normal low of 17F. ————————————————————– Today’s Observations: 7 A.M. Weather: Scattered cirrus, few stratocumulus distant NE-E Temperature: 22F; Dew Point: 8F; Relative Humidity: 56% Wind: W @ 10 kts Sea-level pressure: 1019.0 mb; 30.09 in. Hg: rising, then more rapidly Visibility: 35 miles, hazy 6-hr Max temp: 27F 6-hr Min temp: 21F 24-hr Precip: 0.00 inches 24-hr Snowfall: 0.0 inches Snow Depth: 2 inches BHO SA 1155 220 SCT 35 190/22/8/2810/009/ FEW SC DSNT NE-E HAZY/ 8/501 4/002 53012 10027 20021 10 A.M. Weather: Scattered cirrus Temperature: 37F; Dew Point: 11F; Relative Humidity: 50% Wind: WSW @ 9 kts Sea-level pressure: 1019.1 mb; 30.09 in. Hg: rising, then falling Visibility: 40 miles, hazy 3-hr Precip: 0.00 inches 3-hr Snowfall: 0.0 inches BHO SA 1455 250 SCT 40 191/37/11/2509/009/ 8/001 50001 1 P.M. Weather: Scattered stratocumulus, scattered cirrostratus, broken cirrus Temperature: 31F; Dew Point: 12F; Relative Humidity: 44% Wind: W @ 13G24 kts Sea-level pressure: 1016.6 mb; 30.02 in. Hg: falling, then more slowly Visibility: 40 miles, hazy 6-hr Max temp: 32F 6-hr Min temp: 22F 6-hr Precip: 0.00 inches 6-hr Snowfall: 0.0 inches Snow Depth: 2 inches BHO SA 1755 55 SCT 220 SCT E250 BKN 40 166/31/12/2713G24/002/ HAZY/ 8/506 4/002 56025 10032 20022 ————————————————————– SUMMARY FOR THURSDAY, JANUARY 22, 2026 TEMPERATURE (DEGREES F) MAX…….43   NORMAL…..34 MIN…….27   NORMAL…..17 MEAN……35   NORMAL…..26 DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………….+9 TOTAL DEPARTURE FOR THE MONTH………………………+68 [+3.1 DEGREES/DAY] HEATING DEGREE DAYS (SEASON: JUL 2025 THRU JUN 2026) TOTAL HEATING UNITS FOR YESTERDAY…………….30  DEPARTURE……..-9 TOTAL HEATING UNITS FOR THE MONTH……………771  DEPARTURE…….-69 TOTAL HEATING UNITS FOR THE SEASON………….3011  DEPARTURE…….-39 TOTAL HEATING UNITS LAST SEASON TO DATE……..2797  DEPARTURE……+214 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)………..38 W    @   01:56 P.M. VECTOR #1 (1-Sec)……….38 W    @   01:56 P.M. VECTOR #2 (1-Sec)……….39 WSW  @   02:05 P.M. DAVIS #1……………….37 WSW  @   01:57 P.M. DAVIS #2 ………………39 W    @   01:57 P.M. RMY #1 (Instantaneous)…..42 WSW  @   02:05 P.M. RMY #2 (Instantaneous)…..40 W    @   01:56 P.M. MERLIN…………………38 W RICHARDS (C5C) (Inst)……38 W    @   12:13 P.M. FASTEST MILE: CONTACTING ANEMOMETER/OFFICIAL………………25 SW   @   01:44 A.M. MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..25 SW   @   01:44 A.M. MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..26 SW   @   01:43 A.M. MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………26 SW   @   01:44 A.M. MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………27 SW   @   01:44 A.M. MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..25 SW   @   01:44 A.M. MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..26 SW   @   01:43 A.M. MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………24 WSW  @   02:07 P.M. AVERAGE WIND SPEED AND DIRECTION: CONTACTING/OFFICIAL……..14.7 W  [353 total miles] VECTOR #1………………14.4 VECTOR #2………………14.9 DAVIS #1……………….14.7 WSW DAVIS #2……………….14.9 WSW RMY #1…………………14.0 WSW RMY #2…………………14.7 WSW RICHARDS (C5C)………….13.8 PRECIPITATION (INCHES) THROUGH THIS MORNING (EST): TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.14 TOTAL PRECIPITATION FOR THE MONTH (JAN)……..1.56 DEPARTURE…..-1.69 TOTAL PRECIPITATION FOR THE YEAR (2026)……..1.56 DEPARTURE…..-1.69 SNOWFALL (INCHES) THROUGH THIS MORNING (EST): TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE…..-0.6 TOTAL SNOWFALL FOR THE MONTH (JAN)………….10.3 DEPARTURE…..-2.4 TOTAL SNOWFALL FOR THE SEASON (2025-2026)……17.2 DEPARTURE….-10.6 ————————————————————– PRELIMINARY CLIMATE SUMMARY FOR JANUARY CALENDAR DAY DATA DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/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 1/1  29/11/20/-9/0.15/2.7/264/48         43 NW  VEC1 43 NW  RMY 42 1/2  25/12/19/-9/0.00/0.0/397/72         26 W   VEC1 26 W   RMY 27 1/3  30/14/22/-6/0.00/0.0/342/62         31 WNW VEC1 31 WNW RMY 31 1/4  30/21/26/-2/0.03/0.4/171/31         26 NNW VEC1 27 NNW RMY 28 1/5  25/11/18/-10/0.04/0.2/249/45        23 SSE VEC1 22 NW  RMY 23 1/6  32/22/27/-1/0.01/T/000/00           22 ENE VEC1 21 E   RMY 23 1/7  36/30/33/+6/0.25/0.1/000/00         23 NW  VEC1 21 ENE RMY 24 1/8  45/30/38/+11/0.00/0.0/500/90        26 NW  VEC1 27 WNW RMY 27 1/9  50/32/41/+14/0.06/0.0/228/41        41 SW  VEC1 42 SSW RMY 44 1/10 50/36/43/+16/0.36/T/022/04          33 W   VEC1 31 W   RMY 31 1/11 41/30/36/+9/0.06/0.0/079/14         43 WNW VEC1 41 WNW RMY 43 1/12 37/24/31/+4/0.00/0.0/303/54         47 WNW VEC1 46 WNW RMY 47 1/13 45/28/37/+11/0.00/0.0/457/81        35 SSW VEC1 35 SSW RMY 33 1/14 49/39/44/+18/T/0.0/017/03           36 SSW VEC1 36 SSW RMY 36 1/15 51/25/38/+12/T/0.0/340/60           39 SW  VEC1 39 SW  RMY 38 1/16 30/15/23/-3/0.00/0.0/483/85         46 W   VEC1 46 W   RMY 46 1/17 38/24/31/+5/0.02/T/040/07           39 SSW VEC1 39 SSW RMY 40 1/18 33/28/31/+5/0.44/4.4/000/00         22 S   VEC1 22 S   RMY 21 1/19 34/22/28/+2/0.11/2.2/132/23         35 WSW VEC1 33 WSW RMY 38 1/20 24/11/18/-8/0.00/0.0/564/98         33 W   VEC1 33 W   RMY 34 1/21 33/7/20/-6/0.01/0.1/387/67          33 SSW VEC1 34 SSW RMY 36 1/22 43/27/35/+9/0.02/0.2/…/..         38 W   VEC1 38 W   RMY 42 1/23 The low since midnight is 21F, the daily normal low is 17F. ————————————————————– JANUARY DAILY RECORDS TO DATE NONE. ————————————————————– DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated) RECORDS FOR JANUARY 23 HIGH 62F IN 1906 LOW -10F IN 1976 PRECIP 1.69 INS. IN 1966 SNOWFALL 14.6 INS. IN 1966 PEAK GUST 85 MPH S IN 1992 RECORDS FOR JANUARY 24 HIGH 60F IN 1967 LOW -12F IN 1907 PRECIP 2.40 INS. IN 1935 SNOWFALL 11.3 INS. IN 1935 PEAK GUST 82 MPH S IN 1996 TODAY’S REPORT PREPARED BY: Amanda Joly
facebookShare on Facebook
TwitterPost on X
FollowFollow us
PinterestSave
←
→
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
Main Menu