Lena is a city of approximately 2,800 people in Illinois, United States. Located in the Central Time Zone at 42.4°N latitude.
In 2025, Lena recorded an average annual temperature of 49°F. The hottest temperatures reached 92°F in June; the coolest were -13°F in January. Total precipitation for the year was 32 inches, with the wettest month being August. Snowfall for the year totaled approximately 11 inches.
View current conditions and forecast for Lena · More cities in Illinois