January weather forecast and climate
Harrisburg, IL

Average temperature in January - Harrisburg, IL
  • Average high temperature in January: 41°F

The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (41°F).

  • Average low temperature in January: 26°F

The month with the highest average low temperature is July (67°F).
Coldest months (with the lowest average low temperature) are January and February (26°F).

Average rainfall in January - Harrisburg, IL
  • Average rainfall in January: 2.8"

The wettest month (with the highest rainfall) is May (5.1").
The driest month (with the lowest rainfall) is January (2.8").

Average daylight in January - Harrisburg, IL
  • Average daylight in January: 9.9h

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