Weather Forecast and Radar for Grafton, Wisconsin

Weather in Grafton, WI

Grafton, Wisconsin experiences all four seasons, with temperatures ranging from below freezing in the winter to hot and humid in the summer.

In the winter months from December to February, the average temperature is between 20 and 30°F (-7 to -1°C). Snowfall is common, with an average of 50 inches (127 cm) of snow each year. Cold weather and snow can last until the end of March.

In the spring, temperatures rise to an average of between 45 and 65°F (7 to 18°C). Rainfall is common and snowfall is rare.

In the summer, temperatures are usually between 65 and 85°F (18 to 29°C). July and August are the hottest months, with temperatures reaching up to 90°F (32°C). Humidity is high and thunderstorms are common.

Fall temperatures usually range between 45 and 65°F (7 to 18°C). Rainfall is common and snowfall is rare.

Fast Facts About Grafton, WI

As of 2020, the city population is 11718.

Major Cities Nearby Grafton, WI

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