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Illinois State Climatologist

Illinois State Climatologist

  • About
  • Data
    • Champaign-Urbana Data
    • Climate Station Summaries
    • Precipitation Maps
    • Illinois Climate Normals
    • Northeast Illinois Rainfall Trends
    • Frost Dates & Growing Season
    • Snowfall Trends
    • Wind Speeds
    • Fort Armstrong Climate Records
  • Current Illinois Conditions
  • Climate of Illinois
    • Rainfall Frequency (Bulletin 70)
    • Climate Change in Illinois
    • Climate Updates
    • Climate of Chicago
    • Tornadoes in Illinois
    • Ice Storms in Illinois
    • Chances of a White Christmas
    • 1995 Heat Wave
    • Cloudiness in Illinois
  • Drought in Illinois
    • What is Drought?
    • Drought Trends
    • Drought: Worst Case
    • 12-month Drought
    • 18-month Drought
    • 24-month Drought
    • 36-month Drought
    • 48-month Drought
    • 60-month Drought

Drought: Worst Case

Precipitation departures for sites across Illinois experiencing their driest a) 1 year, b) 2 years, c) 3 years, d) 5 years, and e) 10 years, expressed as percent of normal (1971-2000) precipitation. Source: The Water Cycle and Water Budgets in Illinois: A Framework for Drought and Water-supply Planning by Derek Winstanley et al., Illinois State Water Survey IEM 2006-02.