About Heritage Lake, IN's Climate & Weather History

Heritage Lake is a city of approximately 2,900 people in Indiana, United States. Located in the America/Indiana/Indianapolis time zone at 39.7°N latitude.

In 2025, Heritage Lake recorded an average annual temperature of 53°F. The hottest temperatures reached 91°F in July; the coolest were -6°F in December. Total precipitation for the year was 37 inches, with the wettest month being April. Snowfall for the year totaled approximately 7 inches.