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October Weather in Deerfield
Deerfield's October 2026 forecast shows daily high temperatures ranging from 52° to 73°, with overnight lows between 25° and 50°. The average high for October is 61° with an average low of 37°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Deerfield. See also: November | December | January.