Colorado December Weather: 40% Snow Chance and Chilly 17°F Lows

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Colorado’s Front Range wakes to a gray chill this Sunday morning as the state slips deeper into its early-December pattern of frosty mornings and wintry skies. In Pueblo, the thermometer hovers in the low 20s, with a biting breeze reminding travelers and residents alike that winter’s rhythm is here.

According to the National Weather Service in Pueblo, a weak system passing through southern Colorado will bring a 30% chance of snow Sunday night into early Monday, with flurries possible north toward Colorado Springs and west into the Wet Mountains. While accumulations should stay light — less than half an inch — colder air will grip the region, dropping lows into the upper teens.

High pressure briefly returns Monday and Tuesday, bringing clear skies and highs near 50°F, but forecasters warn that another round of snow showers could return by Wednesday. A 40% chance of snow is expected midweek, along with daytime highs in the 30s and nighttime lows near 17°F. The shift could make for icy patches on rural roads and bridges, particularly during early morning commutes.

Drivers returning from Thanksgiving travel should remain cautious as these freeze-thaw cycles develop. Meltwater can refreeze at sunset, creating black ice on untreated surfaces — especially along I-25 and Highway 50 through Pueblo County.

Looking further into early December, temperatures are expected to remain below average with periodic snow chances continuing into next weekend — setting the tone for a colder start to the holiday month.

Five-Day Outlook (Pueblo, CO):

  • Monday: Partly sunny, high 40°F, low 16°F.
  • Tuesday: Mostly sunny, high 51°F, low 22°F.
  • Wednesday: 40% chance of snow showers, high 37°F, low 17°F.
  • Thursday: Mostly sunny, high 38°F.
  • Friday: Sunny, high 46°F, low 24°F.