August weather forecast and climate
Lanark, IL

What is the temperature in August in Lanark?

The average high-temperature, in August, in Lanark, Illinois, is 82°F (27.8°C), while the average low-temperature is 55°F (12.8°C).

How much does it rain in Lanark in August?

During August, Lanark regularly aggregates up to 4.5" (115.3mm) of precipitation.
Average temperature in August - Lanark, IL
  • Average high temperature in August: 82°F

The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (28°F).

  • Average low temperature in August: 55°F

The month with the highest average low temperature is July (59°F).
The coldest month (with the lowest average low temperature) is January (7°F).

Average rainfall in August - Lanark, IL
  • Average rainfall in August: 4.5"

The wettest month (with the highest rainfall) is June (4.8").
The driest month (with the lowest rainfall) is January (1.4").

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

The month with the longest days is June (Average daylight: 15.2h).
The month with shortest days is December (Average daylight: 9.2h).

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