Monthly weather forecast and climate
Harrisburg, IL

What is the coldest month in Harrisburg?

The coldest month in Harrisburg, Illinois, is January, with an average high-temperature of 41°F (5°C) and an average low-temperature of 26.1°F (-3.3°C).

How much does it rain in Harrisburg?

Throughout the year, 45.5" (1155.7mm) of rain is accumulated.

What is the driest month in Harrisburg?

January is the month with the least rainfall, with 2.8" (71.1mm) of accumulated precipitation.

What is the wettest month in Harrisburg?

May is the month with the most rainfall, with 5.1" (129.5mm) of accumulated precipitation.

What is the warmest month in Harrisburg?

With an average high-temperature of 91°F (32.8°C) and an average low-temperature of 66.9°F (19.4°C), July is the warmest month in Harrisburg.
Average rainfall - Harrisburg, IL
Average daylight - Harrisburg, IL

The month with the longest days is June (Average daylight: 14.7h).
The month with shortest days is December (Average daylight: 9.6h).

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