Denver/ Weather & Environment

Mile-High October Sizzler: Denver Nears Record 88 Degrees Monday

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Published on October 04, 2026
Mile-High October Sizzler: Denver Nears Record 88 Degrees MondaySource: Google Street View

Denver woke to clear skies Sunday, October 4, with temperatures in the mid-50s and a summer-like afternoon ahead. The city is forecast to reach 82 degrees Sunday, and the unusually warm pattern will continue through the week.

Sunday Starts Cool Then Turns Sunny

According to the National Weather Service Denver/Boulder, Sunday will stay sunny with light winds and a high near 82 degrees. Clear skies Sunday night will bring a low around 56, so early risers may still want a light jacket before the afternoon warmth arrives.

Monday Could Bring Near-Record Warmth

Monday is shaping up as the hottest day of the stretch, with sunshine and a high near 88 degrees. The forecast discussion describes the warmth as near-record for parts of the plains, making Monday feel more like late summer than early October.

Warm, Mostly Dry Weather Holds Through Saturday

Tuesday should remain mostly sunny with a high near 86, followed by highs around 83 Wednesday, 82 Thursday and 83 Friday and Saturday. Overnight lows will generally stay in the mid-to-upper 50s, while winds remain light for most of the week.

Mountain Showers Possible But Denver Stays Mostly Dry

A few isolated showers could develop over higher terrain Sunday through Tuesday, but rain chances in Denver remain minimal. No watches, warnings or advisories are listed for the area, leaving the week looking favorable for outdoor plans—with plenty of sunscreen still worth keeping handy.

Denver-Weather & Environment