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Winthrop Harbor, Illinois, United States experiences a range of weather throughout the year. In the winter months, temperatures typically average around 28°F, with highs reaching into the mid-30s and lows dipping down to the single digits or below. Snowfall is common in the area, with an average of around 34 inches per year.
In the springtime, temperatures begin to warm up and average around 49°F. Highs can reach into the upper-60s, while lows can dip down into the mid-30s. Rainfall is more common in the spring, with an average of around 4.6 inches per month.
The summer months are characterized by warm temperatures, with an average of 75°F. Highs can reach into the low-90s, while lows may stay in the upper-60s. Rainfall is more common in the summer, with an average of around 4.8 inches per month.
The fall months bring cooler temperatures, with an average of 57°F. Highs can reach into the mid-70s, while lows can dip down into the mid-30s. Rainfall is more common in the fall, with an average of around 4.4 inches per month.
As of 2020, the city population is 6675.
This map shows the current & 7-day weather forecast, weather alerts, and weather radar for Winthrop Harbor, Illinois.