Charts of Monthly Blue Hill Observatory Climate Data

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 average for prior years.  These long-term averages are much less variable than recent 30-year “normals”.

Temperature Precipitation Snowfall 2021 2021 2020-2021 2020 2020 2019-2020 2019 2019 2018-2019 2018 2018 2017-2018 2017 2017 2016-2017 2016 2016 2015-2016 2015 2015 2014-2015 2014 2014 2013-2014 2013 2013 2012-2013 2012 2012 2011-2012 2011 2011 2010-2011 2010 2010 2009-2010 2009 2009 2008-2009 2008 2008 2007-2008 2007 2007 2006-2007 2006 2006 2005-2006 2005 2005 2004-2005 2004 2004 2003-2004 2003 2003 2002-2003 2002 2002 2001-2002 2001 2001 2000-2001 2000 2000 1999-2000 1999 1999 1998-1999 1998 1998 1997-1998 1997 1997 1996-1997 1996 1996 1995-1996 1995 1995 1994-1995

Category: Climate Research, Graphs & Data, Weather Archives