Hannibal Wtr Wks, MO Climate

Climate Insight: Hannibal Wtr Wks, MO

The NOAA 1991–2020 climate normals describe Hannibal Wtr Wks, Missouri as a location with an annual average temperature of 53°F, ranging from a mean daily high of 62°F to a mean daily low of 44°F. July is typically the warmest month of the year, while January is the coldest. These thirty-year averages, computed from station USC00233601, smooth out year-to-year variability and give a baseline expectation for typical conditions in any given month.

Hannibal Wtr Wks averages 41.3 inches of precipitation a year, predominantly as rainfall, and that matters as much to daily life here as temperature does. The frost-free season averages 200 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near April 10 and the first fall freeze near October 27. As for energy demand, 5,515 heating degree days and 1,181 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.

On PlainClimate's composite comfort index, Hannibal Wtr Wks scores 68/100 (Good), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. The monthly tables above turn that into a planning tool: expect the mildest highs and lows in the shoulder seasons, July-driven heat at the peak of summer, and January-driven cold at the depth of winter. Every number here is a thirty-year average, not a forecast, so any given year can and does run warmer, cooler, wetter, or drier than the normal.