Average Surface Water Temperature (GLSEA)

Previous 365 days ACSPO GLSEA Average Surface Water Temperature

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Average GLSEA Surface Water Temperature Graphs

Superior
Michigan
Huron
Ontario
Erie
St. Clair

Long term average surface water temperature compared to 2023 (CSV, 1995 – Present)

Superior (F)
Michigan (F)
Huron (F)
Ontario (F)
Erie (F)
St. Clair (F)
Superior (C)
Michigan (C)
Huron (C)
Ontario (C)
Erie (C)
St. Clair (C)

Historic Graphs

Long term average surface water temperature compared to 2022 (Graphs, 1995-2021)

Superior
Michigan
Huron
Ontario
Erie
St. Clair

Long term average surface water temperature compared to 2023 (Graphs, 1995-2022)

Superior
Michigan
Huron
Ontario
Erie
St. Clair

Historic Data Files

Long term average surface water temperature compared to 2020 (CSV, 1995-2019)

Superior (F)
Michigan (F)
Huron (F)
Ontario (F)
Erie (F)
St. Clair (F)
Superior (C)
Michigan (C)
Huron (C)
Ontario (C)
Erie (C)
St. Clair (C)

Long term average surface water temperature compared to 2021 (CSV, 1995-2020)

Superior (F)
Michigan (F)
Huron (F)
Ontario (F)
Erie (F)
St. Clair (F)
Superior (C)
Michigan (C)
Huron (C)
Ontario (C)
Erie (C)
St. Clair (C)

Long term average surface water temperature compared to 2022 (CSV, 1995-2021)

Superior (F)
Michigan (F)
Huron (F)
Ontario (F)
Erie (F)
St. Clair (F)
Superior (C)
Michigan (C)
Huron (C)
Ontario (C)
Erie (C)
St. Clair (C)

Long term average surface water temperature compared to 2023 (CSV, 1995-2022)

Superior (F)
Michigan (F)
Huron (F)
Ontario (F)
Erie (F)
St. Clair (F)
Superior (C)
Michigan (C)
Huron (C)
Ontario (C)
Erie (C)
St. Clair (C)

Average GLSEA Surface Water Temperature Data (by year)

1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023

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