Weather Forecast and Radar for Swansea, Illinois

Weather in Swansea, IL

Swansea, Illinois, has a humid continental climate with four distinct seasons. Summers are typically hot and humid, with temperatures averaging in the mid-80s (°F). July is the hottest month, with temperatures typically reaching the low 90s (°F). Winters are cold and snowy, with temperatures averaging in the mid-30s (°F). January is the coldest month, with temperatures typically dipping into the low teens (°F).

Spring and fall are milder, with temperatures averaging in the mid-60s (°F). Both seasons bring moderate amounts of precipitation, with thunderstorms being common in the warmer months.

Swansea receives about 43 inches of precipitation per year, with snowfall averaging around 17 inches. The area is prone to severe weather, such as tornadoes, hail, and flooding.

Fast Facts About Swansea, IL

As of 2020, the city population is 14100.

Major Cities Nearby Swansea, IL

This map shows the current & 7-day weather forecast, weather alerts, and weather radar for Swansea, Illinois.