Aberdeen Proving Ground Community
Weather and Climate
Harford County enjoys a humid subtropical climate, with hot, humid summers and fairly mild winters. The sun usually shines on Harford County for 211 days a year. The warmest month is July, with an average high of 87 degrees. The coldest month is January, with an average minimum temperature of 23 degrees. Precipitation hovers near 45 inches a year, with rainfall evenly distributed through all 12 months.