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A warm and dry start to October across Colorado, but we'll go from 80s to 60s this weekend

Nice and mild for the rest of this week, then MUCH colder air arrives
Mild temperatures to begin October, then a HUGE cooldown arrives
Mild end to the week
Front Range highs on Thursday
Denver forecast Thursday
State highs Thursday
Upcoming cold air
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DENVER — The weather will stay dry and pretty quiet tonight, with temperatures warmer than normal for this time of year. The weather will be dominated by a strong ridge of high pressure over Colorado, keeping skies mostly clear and the air dry. This pattern sticks with us through Friday, and with warm air flowing in from the southwest, we’ll continue to see afternoon highs climbing well into the 80s across the plains. Denver may flirt with a record on Friday, but should fall just short.

State highs Thursday

Thursday and Friday will feel more like late summer than early October. Highs will reach the low to mid 80s Thursday and the mid to upper 80s on Friday. Along with the warmth, expect breezy conditions, especially over the eastern plains and some mountain valleys.
That combo of gusty winds and low humidity means fire weather concerns will be on the rise by the end of the week. So, it’s a good idea to be extra cautious with anything that could spark a flame.

Denver forecast Thursday

On Saturday, a noticeable shift begins. A weather system moving through the Northern Rockies will bring increased clouds, stronger winds, and the chance for showers and a few storms, especially during the afternoon and evening. While most of the plains—including Denver—may only see spotty, light rainfall, the mountains are expected to get the brunt of the moisture.

Upcoming cold air

There’s a solid chance (around 70%) of a light dusting of snow for higher elevations, mainly above 9,000 feet, as cooler air filters in behind the system.Saturday night into Sunday brings cooler temperatures as that system moves out and a cooler air mass settles in. While much of the moisture will exit, some lingering upslope flow means a few showers may still pop up here and there, especially in the foothills and nearby plains.

Mild temperatures to begin October, then a HUGE cooldown arrives

Highs will drop into the 60s, a noticeable cool-down after the summer-like stretch earlier in the week. In fact, there’s a decent chance that either Sunday or Monday could struggle to reach 60 degrees in some areas.Looking into early next week, expect the cooler pattern to continue through at least Tuesday.

While it won’t be overly wet, the persistent upslope flow might bring occasional cloud cover and a stray shower. Overall, it’ll feel much more like fall again, with a slow warming trend expected by the middle of the week. So, enjoy the warm days while they last—sweater weather is right around the corner.

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