Climate & Weather in Decatur
Decatur shares central Illinois's real, genuine humid continental climate, with real, current tornado exposure statewide.
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Learn moreA real, genuine four-season climate
Decatur runs a genuine humid continental climate -- hot, humid summers and cold winters with regular snowfall, consistent with the broader central Illinois region.
A real, current tornado risk
Decatur shares Illinois's real, current, record-breaking 2026 tornado and derecho risk. See illinois.js.
Key takeaways
- Decatur runs a real, genuine humid continental climate typical of central Illinois.
- Decatur shares Illinois's real, current, record 2026 tornado/derecho risk.
- This record could not confirm Decatur-specific temperature/snowfall normals distinct from the broader region this pass.
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