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Year Without a Summer (1816) | John Seach
The year 1816 was known as the Year Without a Summer. The northern hemisphere suffered from colder than normal conditions.
In the NE United states snow remained 2 feet deep in late spring.
The global weather change was caused by a sunspot minimum called the Dalton Minimum, and the effects of volcanic aerosols from the eruption of Tambora volcano in Indonesia in 1815.