This report is an updated summary of the extensive annual and seasonal climate records of the Blue Hill Observatory that also documents the changes that have occurred in several key parameters over the entire period of record. This document is also available as a downloadable PDF file.
The year 2020 ended as the second warmest on record with a 24-hour adjusted mean temperature of 51.3F, which was 3.7F warmer than the 120-year (1891-2010) long-term mean and 2.4F above the 30-year (1981-2010) normal. The only warmer year was 2012 with a mean of 51.7F. The annual average maximum temperature of 60.4F was 3.5F… Read More »
Blue Hill Observatory December 2020 Summary: December was warmer, wetter, cloudier and snowier than average. The 24-hour adjusted mean temperature for the month of 34.0 deg F was 4.2 degrees warmer than the 120-year average for December, and it was 2.4 degrees warmer than the 1981-2010 30-year average. The average maximum temperature of 41.1 deg… Read More »
Blue Hill Observatory November 2020 Summary: November was unseasonably warm and both wetter and sunnier than average. The 24-hour adjusted mean temperature for the month of 46.9 deg F was 6.3 degrees warmer than the 120-year average for November, and it was 4.8 degrees warmer than the 1981-2010 30-year average. November was the fourth warmest… Read More »
Blue Hill Observatory October 2020 Summary: October was warm and wet with one very snowy day. The 24-hour adjusted mean temperature for the month of 52.7 deg F was 1.6 degrees warmer than the 120-year average for October, and it was 1.3 degrees warmer than the 1981-2010 30-year average. The average maximum temperature of 61.2… Read More »
Shortly after 9 AM EST on Sunday, November 8th, 2020 a small 3.6 magnitude earthquake shook parts of southeastern New England. The epicenter was about 6.2 miles below ground under Buzzard’s Bay and just offshore of Bliss Corner, in Dartmouth, Massachusetts. The earthquake was recorded on the seismographs at the Blue Hill Observatory and other… Read More »
A period of unseasonably warm weather that arrived on Thursday, November 5th has brought several daily record high temperatures to the Observatory. The new records observed through November 11th are: 11/06/2020: DAILY RECORD HIGH MAXIMUM TEMPERATURE OF 72F, BREAKS PREVIOUS RECORD OF 71F SET IN 1959 AND 201511/07/2020: DAILY RECORD HIGH MAXIMUM TEMPERATURE OF 75F, TIES PREVIOUS… Read More »
The remnants of Hurricane Zeta, another developing coastal storm behind it, and a very cold air mass for October have combined to provide a period of heavy rain on Thursday, October 29th, into the following night, which changed to snow early Friday morning. A total of 6.5 inches of snow was measured on the summit… Read More »
Due to the ongoing COVID-19 pandemic, the 20th Southern New England Weather Conference has been postponed until next year, tentatively to be held on Saturday, October 23rd, 2021. However, there will be a virtual mini-conference from 9 AM to 11 AM on Saturday, November 14th, 2020. Registration is required, but it is free. The three… Read More »
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