Extensive work is in progress to transfer over 135 years of primary daily data observations including maximum and minimum temperature, precipitation, snowfall, snow cover, wind speed, sunshine and other parameters. This process will fill gaps and remove inconsistencies in the existing data base and begin the process of digitizing data that has never been tabulated […]
These figures summarize the daily high and low temperatures, the normal temperatures, the temperature extremes, monthly precipitation, annual totals, largest storms and other important weather events for each year. Annual Summary Graphs 2020 2019 2018 2017 2016 2015 2014 2013 2012
Weather observations on Blue Hill began on February 1, 1885, but the annual mean temperature plot below includes data for 1831 to 1884 from nearby locations that have been carefully adjusted to the Great Blue Hill summit, to extend the Observatory mean temperature record back to 1831. Long-Term Climate Graphs Annual Mean Temperature (since 1831) Annual […]
The charts below show annual and monthly average temperature and total precipitation and snowfall as well as their departures from average since 1995. Note that departures from the mean depicted in these plots are differences from the 1891-2020 130-year, long-term average since 2021, from the 1891-2010 120-year average for 2012-2020, and from the 1891-2000 110-year […]
Temperature, Precipitation, Snowfall, and Wind Measurements Weather in New England is rarely “normal”, but the tables below show the average monthly weather conditions at the Blue Hill Observatory for the 130-year period from 1891-2020. Extremes are shown for the full period of record, 1885-Present, except peak wind gusts, which are for 1940-Present. Temperature (oF) Month […]
Pictured here is the monument near the Observatory that was originally erected in 1912 in honor of the Observatory’s founder, Abbott Lawrence Rotch. It was later etched with a summary of the climate information that was recorded during the Observatory’s first century (1885-1984). This page lists the climate records on the monument that have been […]
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