Forecast for the weekend: seasonably warm and windy, cold air lurks to the northeast

12/12/25 8:30am: Forecast for the weekend: overall seasonably warm, dry and windy at times (especially for the Front Range mountains).

The front-range (Den/Bou) and eastern plains will be on the eastern edge of all the really cold-air to our northeast, some of this cold-air will likely work into eastern CO and the front-range by Sun morning. Prior to this 60s for today and tomorrow (40s/50s for the mountain towns).

In terms of wind, luckily no more high-wind warnings but it will be windy at times, especially for the Front Range mountains and foothills at times, primarily from 10am-5pm today (Fri) and also tomorrow (Sat). For areas above 9k ft, east of the Cont. Divide, wind-gusts of 30-60mph. Also closer to the CO/WY border.

On Saturday, turning more windy for the northern front-range and eastern plains (Den/Bou/Ft.Collins and east) form 10am-4pm: northwest wind gusts of 20-40mph.

Less wind for the mountains and front-range on Sunday....that will allow some colder air to move in from the east.

Models show a surge of colder air moving into eastern CO and the front-range (Den/Bou) on Sun morning, not entirely clear how far west the much colder air makes it, it maybe will mix out by Sun mid-day. But likely cooler for Den/Bou on Sun with highs in the upper 40s to 50s (or if it mixes out then warmer).

It will be cold over eastern CO from Sat night through Sun night.

Little impact in the mountains (in terms of the cold air moving in from the east).

Really cold air and snow expected east of CO from the upper-Midwest to New England this weekend.

I'm tracking a much more active period for CO between Dec 22nd-28th.

First image loop shows forecast wind-gusts over the next 48hrs. Second image shows forecast high-temps on Sat from NWS. Third image shows forecast temps at 1pm today from latest HRRR: warm along the front-range with temps in the 60s, cold northeast of CO. Fourth image shows forecast temps at 5am Sun....much colder over eastern CO (and maybe the front-range).