Denver/ Weather & Environment

Denver Starts Week With Monday Forecast

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Published on September 21, 2026
Denver Starts Week With Monday ForecastSource: Flickr / Wikimedia Commons

Denver is beginning Monday. The week is expected to become more unsettled later.

Rain and storm chances are expected later in the week. The current forecast is the basis for this report; for background on the earlier outlook, see Sunday’s Hoodline forecast.

Monday Weather

Monday Compared With Normal

For a temperature benchmark, according to the National Weather Service Denver/Boulder climate report, Denver's September 21 normal high and low are 78 and 48 degrees, respectively.

September Weather Can Change Quickly

The National Weather Service Denver/Boulder says a strong upper-level low brought Denver its second-earliest measurable snowfall on record on September 8-9, 2020, ending record heat and producing an abrupt shift to early-season snow and record cold. See the National Weather Service's account of the 2020 event.

Showers Possible Later In The Week

Isolated showers may occur during the week.

Wednesday looks more unsettled, with mostly cloudy skies and a high near 79. Thursday will be cooler near 76 degrees, with rain showers possible before noon and a smaller storm chance later in the day.

Warm Weekend Ahead

Friday rebounds to around 81 degrees with mostly sunny skies early and a chance of showers and thunderstorms after noon.

No watches, warnings or advisories were listed for the Denver area on Sunday. Monday has limited precipitation chances, while isolated showers may occur during the week.

Denver-Weather & Environment