Climate Data, Illinois State Water Survey

Illinois State Climatologist Data

Duration (Years)
From:
To:
(1901 - 2017 available) Caution! Requests for large data sets over slow Web connections may not work correctly. Help Data Information

Climate Parameters
All Data
Precipitation Rain Days High Low Mean Snow	Daily Max Precipitation Heating Degree Days Cooling Degree Days Days 90 Days 32 Snow Days
Include seasonal data

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