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Monday, March 23, 2026

March 23, 2026

BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA MONDAY, MARCH 23, 2026 ALL TIMES ARE…

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BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA MONDAY, MARCH 23, 2026 ALL TIMES ARE IN EASTERN STANDARD TIME (EST) SUNRISE: 0542E SUNSET:  1800E DECENT RAINFALL OVERNIGHT, A LIGHT MIX OF WINTRY PRECIP TODAY…. Rain came down moderately most of the night with 1.14″ of liquid being measured at 7am this morning. Sleep started mixing in with the rain between 6-7am with a trace of accumulation of frozen precipitation. The rain and sleet taper off between 7-8am and then light drizzle began just after 9am. The drizzle has been mixing with snow intermittently since just after 9:30am. The snow tends to occur when heavier bands of ocean effect passes over the area. So far, there has been no accumulation from the snow. Temperatures are very chilly, especially for this time of year. With a raw wind out of the north-northeast and northeast, it really feels like winter out there today. Readings fell from the daily high at midnight, which was 37F, to the low 30s which is where it’s held so far during the daylight hours. With the wind however, wind chill values are in the low to mid 20s, brr! Winds, as mentioned, have been gradually out of the north- northeast to northeast all day. The average speed for the day so far is around 12mph. The peak gust for the day so far is 32mph, which occurred just before 11am this morning. The visibility has been limited due to precipitation and fog. The view started the day at around 1/4 miles, but has improved to as much as 10 miles at times, however it has been mainly lower than that most of the day, especially when bands of precipitation move through. The maximum temperature so far today is 37F degrees, which is 9 degrees below the normal high of 46F. The minimum temperature since midnight is 32F degrees, which is 3 degrees above the normal low of 29F. ————————————————————– Today’s Observations: 7 A.M. Weather: Sky obscured, vertical visibility 200ft, light sleet and rain Temperature: 33F; Dew Point: 33F; Relative Humidity: 100% Wind: NE @ 12G23 kts Sea-level pressure: 1009.8 mb; 29.82 in. Hg: rising, then falling Visibility: 1/4 mile, fog 6-hr Max temp: 36F 6-hr Min temp: 33F 24-hr Precip: 1.14 inches 24-hr Snowfall: Trace Snow Depth: Trace BHO SA 1155 X W2 1/4IP-R-F 098/33/33/0512G23/982/ IPB24 TOTAL NEW SNW PST 24 HRS TRACE/ 8//// 4/000 50002 6059/ 70114 10036 20033 10 A.M. Weather: Sky obscured, vertical visibility 200ft, light drizzle, intermittent light snow Temperature: 32F; Dew Point: 32F; Relative Humidity: 100% Wind: NNE @ 13G23 kts Sea-level pressure: 1010.7 mb; 29.85 in. Hg: rising, then falling Visibility: 1 mile, fog 3-hr Precip: 0.02 inches 3-hr Snowfall: Trace BHO SA 1455 X W2 1L-F 107/32/32/0213G23/985/ L-B04 INTMT S-B39 TOTAL NEW SNW PST 3 HRS TRACE/ 8//// 50009 6002/ 1 P.M. Weather: Overcast stratocumulus, very light drizzle, intermittent very light snow Temperature: 33F; Dew Point: 31F; Relative Humidity: 92% Wind: NNE @ 10G17 kts Sea-level pressure: 1012.1mb; 29.89 in. Hg: rising, then more rapidly Visibility: 10 miles, thin fog 6-hr Max temp: 33F 6-hr Min temp: 32F 6-hr Precip: 0.02 inches 6-hr Snowfall: Trace Snow Depth: 0 inches BHO SA 1755 E10 OVC 10L- 121/33/31/0210G17/989/ INTMT S- PCPN VRY LGT THN F ALQDS TOTAL NEW SNW PST 6 HRS TRACE/ 8/5// 53014 6002/ 10033 20032 ————————————————————– SUMMARY FOR SUNDAY, MARCH 22, 2026 TEMPERATURE (DEGREES F) MAX…….44   NORMAL…..46 MIN…….33   NORMAL…..29 MEAN……39   NORMAL…..37 DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………….+2 TOTAL DEPARTURE FOR THE MONTH……………………..+114 [+5.0 DEGREES/DAY] HEATING DEGREE DAYS (SEASON: JUL 2025 THRU JUN 2026) TOTAL HEATING UNITS FOR YESTERDAY…………….26  DEPARTURE……..-2 TOTAL HEATING UNITS FOR THE MONTH (MAR)………565  DEPARTURE……-115 TOTAL HEATING UNITS FOR THE SEASON………….5107  DEPARTURE……..-5 TOTAL HEATING UNITS LAST SEASON TO DATE……..4713  DEPARTURE……+394 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)………..41 SSW  @   01:47 P.M. VECTOR #1 (1-Sec)……….42 SSW  @   01:47 P.M. VECTOR #2 (1-Sec)……….40 S    @   01:47 P.M. DAVIS #1……………….47 S    @   01:47 P.M. DAVIS #2 ………………49 S    @   01:39 P.M. RMY #1 (Instantaneous)…..42 SSW  @   01:47 P.M. RMY #2 (Instantaneous)…..43 S    @   11:55 A.M. MERLIN…………………40 S RICHARDS (C5C) (Inst)……41 SSW  @   01:47 P.M. FASTEST MILE: CONTACTING ANEMOMETER/OFFICIAL………………31 SSW  @   11:51 A.M. MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..30 SSW  @   01:49 P.M. MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..30 S    @   11:54 A.M. MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………31 S    @   01:49 P.M. MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………32 S    @   01:55 P.M. MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..29 SSW  @   01:49 P.M. MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..30 S    @   11:54 A.M. MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………28 SSW  @   01:48 P.M. AVERAGE WIND SPEED AND DIRECTION: CONTACTING/OFFICIAL……..12.3 SSW [296 total miles] VECTOR #1………………12.9 VECTOR #2………………13.5 DAVIS #1……………….12.8 S DAVIS #2……………….13.7 S RMY #1…………………12.7 S RMY #2…………………13.5 S RICHARDS (C5C)………….12.8 PRECIPITATION (INCHES) THROUGH THIS MORNING (EST): TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..1.14 DEPARTURE…..+0.95 TOTAL PRECIPITATION FOR THE MONTH (MAR)……..4.78 DEPARTURE…..+0.86 TOTAL PRECIPITATION FOR THE YEAR (2026)…….11.37 DEPARTURE…..-1.05 SNOWFALL (INCHES) THROUGH THIS MORNING (EST): TOTAL SNOWFALL 24 HRS ENDING 7 A.M…………..0.0 DEPARTURE…..-0.5 TOTAL SNOWFALL FOR THE MONTH (MAR)…………..2.5 DEPARTURE…..-9.7 TOTAL SNOWFALL FOR THE SEASON (2025-2026)……81.2 DEPARTURE….+17.1 ————————————————————– PRELIMINARY CLIMATE SUMMARY FOR MARCH 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 3/1  37/19/28/-3/0.10/1.9/209/31         30 NNW VEC1 31 NNW RMY 31 3/2  28/8/18/-14/0.00/0.0/665/98         25 N   VEC1 25 NNW RMY 25 3/3  32/17/25/-7/0.43/0.5/211/31         21 S   VEC1 21 S   RMY 22 3/4  54/30/42/+10/0.22/0.0/670/98        20 W   VEC1 19 W   RMY 20 3/5  46/33/40/+8/0.36/0.0/000/00         35 ENE VEC1 35 ENE RMY 38 3/6  33/26/30/-3/0.06/T/000/00           32 ENE VEC1 32 ENE RMY 33 3/7  46/32/39/+6/0.01/0.0/000/00         39 SSW VEC1 39 SSW RMY 42 3/8  54/46/50/+17/0.01/0.0/007/01        33 SSW VEC1 34 SSW RMY 34 3/9  67/45/56/+23/0.00/0.0/684/98        30 SSW VEC1 30 SW  RMY 31 3/10 74/48/61/+27/0.00/0.0/673/96        28 SW  VEC1 27 WSW RMY 28 3/11 59/39/49/+15/0.12/0.0/500/71        38 SSW VEC1 38 SSW RMY 42 3/12 57/30/44/+10/0.18/T/000/00          35 NW  VEC1 34 WNW RMY 37 3/13 42/25/34/0/T/T/383/54               32 WNW VEC1 32 NW  RMY 34 3/14 47/30/39/+4/0.01/0.1/606/85         54 WNW VEC1 54 WNW RMY 56 3/15 41/28/35/0/0.00/0.0/107/15          30 SE  VEC1 30 SE  RMY 29 3/16 60/36/48/+13/1.43/0.0/000/00        71 SSW VEC1 72 S   RMY 74 3/17 59/24/42/+6/0.02/T/555/77           81 S   VEC1 80 S   RMY 83 3/18 35/20/28/-8/0.00/0.0/521/72         36 WNW VEC1 36 WNW RMY 37 3/19 38/23/31/-5/0.00/0.0/…/..         21 SSW VEC1 21 SSW RMY 21 3/20 54/31/43/+6/0.15/0.0/…/..         43 SSW VEC1 42 SSW RMY 45 3/21 53/35/44/+7/0.00/0.0/…/..         30 NW  VEC1 32 NW  RMY 31 3/22 44/33/39/+2/0.51/0.0/…/..         41 SSW VEC1 42 SSW RMY 42 3/23 The low since midnight is 32F, the daily normal low is 29F. ————————————————————– MARCH DAILY RECORDS TO DATE 3/9  RECORD HIGH MINIMUM TEMPERATURE OF 45F, BEATING THE PREVIOUS RECORD OF 42F SET IN 1922 3/10 RECORD HIGH MAXIMUM TEMPERATURE OF 74F, BEATING THE PREVIOUS RECORD OF 69F SET IN 1977 3/17 RECORD PEAK WIND GUST OF 81 MPH, BEATING THE OLD RECORD OF 70 MPH SET IN 1973 ————————————————————– DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated) RECORDS FOR MARCH 23 HIGH 78 IN 1938 LOW 3 IN 1934 PRECIP 2.52 INS. IN 2010 SNOWFALL 3.0 INS. IN 1977 PEAK GUST 78e MPH W IN 1940 RECORDS FOR MARCH 24 HIGH 70 IN 1920 LOW 6 IN 1906 PRECIP 1.51 INS. IN 1956 SNOWFALL 12.3 INS. IN 1956 PEAK GUST 71 MPH W IN 1968 TODAY’S REPORT PREPARED BY: Matt Douglas
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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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