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Alton, Iowa, United States has a temperate climate with four distinct seasons. Summers are warm and humid with average temperatures ranging from 17°C to 27°C. Winters are cold with temperatures ranging from -1°C to 4°C. The spring season is mild with temperatures ranging from 6°C to 18°C and the fall season is cool with temperatures ranging from 2°C to 15°C. Precipitation is fairly evenly distributed throughout the year with an average of 81mm of rain and 32cm of snow. The sun shines for an average of 230 days per year with July and August being the sunniest months.
As of 2020, the city population is 1534.
This map shows the current & 7-day weather forecast, weather alerts, and weather radar for Alton, Iowa.