August weather forecast and climate
LaSalle, IL

Weather in August

August, the last month of the summer, in LaSalle, is also a moderately hot month, with temperature in the range of an average low of 61°F (16.1°C) and an average high of 82.9°F (28.3°C).

Temperature

In LaSalle, the average high-temperature in August is essentially the same as in July - a still warm 82.9°F (28.3°C). The average low-temperature, in LaSalle, is 61°F (16.1°C).

Daylight

The average length of the day in August in LaSalle is 13.8h.
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FAQ

How many hours of daylight does LaSalle have in August?

In August, the average length of the day in LaSalle, Illinois, is 13.8h.

Average temperature in August
LaSalle, IL

Average temperature in August - LaSalle, IL
  • Average high temperature in August: 83°F

The warmest month (with the highest average high temperature) is July (85°F).
The month with the lowest average high temperature is January (30°F).

  • Average low temperature in August: 61°F

The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (14°F).

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Average daylight in August
LaSalle, IL

Average daylight in August - LaSalle, IL
  • Average daylight in August: 13.8h

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

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