Is it too hot outside today in Thornton, CO

Updated October 24 · Live conditions refresh automatically.

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Heat Stroke

Safe

Heat risk is low.

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Extreme dangerDangerExtreme cautionCautionSafe

Safe

Quick answer — Thornton, CO

Safe — Thornton, CO

Is it too hot outside today in Thornton, CO: Safe. Heat risk is low.

Verdict: Safe
High / Low: 52° / 41°
Details: Heat risk is low.

Updated 10/24/2026 · Live conditions refresh automatically.

Is it too hot outside today in Thornton, CO | Fit Check - Weather