Monthly weather forecast and climate
LaSalle, IL

What is the coldest month in LaSalle?

With an average high-temperature of 30°F (-1.1°C) and an average low-temperature of 14°F (-10°C), January is the coldest month in LaSalle, Illinois.

What is the warmest month in LaSalle?

The warmest month is July, with an average high-temperature of 84.9°F (29.4°C) and an average low-temperature of 63°F (17.2°C).
Average daylight - LaSalle, IL

The month with the longest days is June (Average daylight: 15.1h).
The month with shortest days is December (Average daylight: 9.2h).

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