Graphs of Annual Blue Hill Observatory Climate Data

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… Read More »

Blue Hill Observatory Annual Summary Graphs

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

Blue Hill Observatory Rotch Memorial Monument

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… Read More »