Hagerstown Washington CO, MD Climate

Climate Insight: Hagerstown Washington CO, MD

In Hagerstown Washington CO, Maryland, the NOAA 1991–2020 climate normals put the annual average temperature at 55°F, ranging from a mean daily high of 64°F to a mean daily low of 46°F. July is typically the warmest month of the year, while January is the coldest. As thirty-year averages computed from station USW00093706, these numbers smooth out year-to-year noise into a working baseline for a typical month.

Precipitation patterns matter as much as temperature for anyone planning to live, garden, or travel here. Hagerstown Washington CO receives roughly 35.6 inches of precipitation each year, predominantly as rainfall. The frost-free season averages 211 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near April 7 and the first fall freeze near November 4. For energy use, 4,716 heating degree days and 1,248 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.

On PlainClimate's composite comfort index, Hagerstown Washington CO scores 78/100 (Good), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. Use the monthly tables above to plan around specific windows, shoulder seasons for mild highs and lows, peak summer for July-driven heat, or deep winter for January-driven cold. All figures here are thirty-year averages: any single year may run warmer, wetter, drier, or cooler than the normal, so treat them as planning guidance rather than forecasts.