Maine: An Encyclopedia
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Climate

Climate

Maine Climate Divisions from Maine

Local Climate Changes Earth’s atmosphere is experiencing unprecedented changes that are modifying global climate. Discussions continue around the world, the nation, and in Maine on how to reduce and eventually eliminate emissions of carbon dioxide (CO2), other greenhouse gases, and … Continue reading

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Climate, Ice Out Dates

Ice-out on Sebago Lake, Spring 1985

Historical Changes in Lake Ice-Out Dates as Indicators of Climate Change in New England, 1850-2000 U.S. Department of the Interior, U.S. Geological Survey Fact Sheet FS 2005-3002 January 2005. Changes in water resources over time may affect public and private … Continue reading

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Climate, Ice Out on Moosehead Lake

Ice Out Moosehead 2014

Since the 1870’s, the date for “ice out” on Moosehead Lake has been occurring earlier in the year on average. Similar trends have been documented on other Maine lakes, including Richardson Lake. The warming climate has advanced the typical date … Continue reading

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Coldest Warmest Areas

Here are the coldest to the warmest areas of the state, based on 49 reporting stations. Data, collected by month for thirty years, are calculated by recording the difference between the mean temperature for a month, and 65 degrees as … Continue reading

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Degree Days

The following heating and cooling degree day normals by month for forty-nine locations in Maine, one aspect of the climate, are calculated by recording the difference between the mean temperature for a month and 65 degrees as the base temperature. … Continue reading

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Precipitation Normals

Precipitation normals are calculated by taking the mean (average) of the precipitation in each month, over a thirty-year period. Sixty-one locations reported on this aspect of Maine’s climate for the period 1971 through 2010. Data reflects the average in the … Continue reading

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Weather

Ice Storm, 1998, in Sherman

in Maine is famously varied and changeable, and at times, severe. The coast, moderated by the ocean, often has local weather far different from that in the western mountains or the expanses of Aroostook County. Adding to the complexity, global … Continue reading

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Weather, Severe Events

Blizzards, floods and hurricanes are occasional weather events, but often sudden and severe in Maine. This is a chronicle of some of the most significant events. Blizzards November 26, 1898 was the first day of the two-day Portland Gale, a … Continue reading

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