Long-Range Weather Forecast For Chicago, IL

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Free 2-Month Weather Forecast

December 2025 Long Range Weather Forecast for Lower Lakes

Dates	Weather Conditions
Dec 1-2	Snow, turning colder
Dec 3-13	Lake-effect snow east, flurries west; cold
Dec 14-18	Sunny, then a snowstorm; turning very cold
Dec 19-24	Snowy periods, cold
Dec 25-29	Sunny east, snowy west; very cold
Dec 30-31	Snow, cold
December	temperature 31° (3° below avg.)precipitation 2" (1" below avg.)

January 2026 Long Range Weather Forecast for Lower Lakes

Dates	Weather Conditions
Jan 1-9	Snowy, very cold
Jan 10-21	Flurries east, sunny west; cold, then turning mild
Jan 22-31	Snowy, turning cold
January	temperature 26° (2° below avg.)precipitation 1.5" (1.5" below avg.)

The 12-Month Long-Range Weather Report From The 2025 Old Farmer's Almanac

November 2025 to October 2026

Winter will be warmer than normal, with the coldest periods in mid- to late December, early and late January, and early February. Precipitation will be below normal, and snowfall will be near to below normal, with the snowiest periods in mid- to late November, much of December, early and late January, early February, and early to mid-March. April and May temperatures will be above normal, and precipitation will be below normal in the east and above west. Summer will be warmer than normal, with the hottest periods in early June and late June into early July. Rainfall will be above normal. September and October will be cooler and drier than usual.

See the complete 12-month weather predictions in The Old Farmer's Almanac.

Weather Trend Graph

November 2025 to October 2026

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