2017 Long Range Weather Forecast for DeKalb, IL

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Complete 2017 Long Range Weather Forecast for the Lower Lakes Region, November 2016 to October 2017 includes week-by-week details. Instant access via digital download!

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How to Read Long-Range Weather Forecasts

Long-range predictions show weather trends in temperatures and precipitation. For example, will the winter be colder or warmer than average? Will there be more or less snow than what's typical for your area?  Our famous predictions (traditionally 80% accurate) are made 18 months in advance, and meant to help you make more informed decisions for long-term planning.

Here on Almanac.com, we provide free long-range forecasts for the next 30 to 60 days covering U.S. and Canadian regions. Find all 12 months of predictions in the annual Old Farmer's Almanac.

Free 2-Month Weather Forecast

FEBRUARY 2017: temperature 28° (1° above avg.); precipitation 2.5" (2" above avg. east, 1" below west); Feb 1-4: Snow showers, very cold; Feb 5-8: Snow to rain, then showers, mild; Feb 9-10: Flurries, cold; Feb 11-13: Snowstorm east, flurries west; cold; Feb 14-19: Snowy periods, cold; Feb 20-23: Showers, mild; Feb 24-28: Rain to snow.

MARCH 2017: temperature 35° (3° below avg.); precipitation 2.5" (0.5" below avg.); Mar 1-3: Snow showers, cold; Mar 4-5: Sunny, mild; Mar 6-12: Heavy rain and snow, then rain and snow showers; Mar 13-14: Sunny, mild; Mar 15-21: Rain and snow showers, then sunny, cool; Mar 22-31: Snow, then snow showers, cold.

Annual Weather Summary: November 2016 to October 2017

Winter will be warmer than normal, with above-normal precipitation. The coldest periods will be in late December and early to mid-January and from mid-January into early February. Snowfall will be above normal in New York and Illinois and below normal elsewhere, with the snowiest periods in mid-November, late December, early and late January, mid-February, and early March.

April and May will be warmer and slightly drier than normal.

Summer will be slightly cooler and rainier than normal. The hottest period will be in mid-July, with other hot periods in early July and mid- to late August.

September and October will be wetter and slightly cooler than normal.

Map showing Old Farmer's Almanac long range weather region number 6

About the Lower Lakes Region

The Lower Lakes long range weather region includes all or part of the following states: ILLINOIS (Aurora, Chicago, Naperville, Peoria, Rockford), INDIANA (Fort Wayne, Gary, Hammond, Indianapolis, South Bend), MICHIGAN (Detroit, Flint, Grand Rapids, Sterling Heights, Warren), NEW YORK (Buffalo, Cheektowaga, Niagara Falls, Rochester, Tonawanda), OHIO (Akron, Cleveland, Dayton, Parma, Toledo), PENNSYLVANIA (Erie, Hermitage, Meadville, Sharon, Warren), WISCONSIN (Kenosha, Madison, Milwaukee, Racine, Waukesha).

Lower Lakes Neighboring Regions

Here are the regions that neighbor the Lower Lakes long range weather region:

Temperature and Precipitation November 2016 to October 2017

Temperature and Precipitation Graph