2018 Long Range Weather Forecast for Rockford, IL


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See long range weather forecasts for the next 60 days from The Old Farmer’s Almanac! Our long range forecasts can be used to make more informed decisions about future plans that depend on the weather, from vacations and weddings to sporting events and outdoor activities.

To see long term forecasts for the entire year, pick up a copy of the annual Old Farmer’s Almanac, available online and in stores.

Note: Long range forecasts are regional, not city-specific. If your city is located inside a region, the region's forecast will apply to you.

Free 2-Month Weather Forecast

March 2018 Long Range Weather Forecast for Lower Lakes
DatesWeather Conditions
Mar 1-9Rainy periods, warm
Mar 10-15Rain to snow, then flurries, cold
Mar 16-22Showers, mild
Mar 23-27Rainy periods, cooler
Mar 28-31Rain and snow showers, cool
Marchtemperature 44° (6° above avg.)
precipitation 4" (1" above avg.)

April 2018 Long Range Weather Forecast for Lower Lakes
DatesWeather Conditions
Apr 1-7Snow showers, then sunny, cool
Apr 8-15Rainy periods, warm
Apr 16-19Sunny, cool
Apr 20-25Rainy periods, turning warm
Apr 26-30Showers, cool
Apriltemperature 50° (2° above avg.)
precipitation 2.5" (1" below avg.)

Annual Weather Summary: November 2017 to October 2018

Winter will be warmer than normal, with slightly above-normal precipitation. The coldest periods will be in early to mid-December, early January, and mid-February. Snowfall will be above normal in Ohio and below normal elsewhere, with the snowiest periods in early to mid-December, late December, early January, and early February. April and May will be warmer and slightly drier than normal. Summer will be hotter and drier than normal. The hottest periods will be in early to mid- and late July and mid-August. September and October will be warmer than normal. Rainfall will be above normal in the west and below normal elsewhere.

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 2017 to October 2018

Temperature and Precipitation Graph

Reader Comments

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Permafrost Melt

When will the permafrost melt for Janesville, WI 2018 Spring? Trying to figure out when construction of a pool can begin.
Thank you!

Birthday party

My daughters birthday party is on March 24 2018. What will the weather be like in Tecumseh, MI on that day? Thank you.

May 5, 2018 Outdoor Wedding, Valparaiso, Indiana

Our daughter is having an Outdoor Wedding May 5, 2018 in Valparaiso, Indiana. It would ease my mind greatly if I had an idea of the weather for that day. Can you tell me please? Thank you very much!


Can you tell me what the prediction is for August 18, 2018? Or where I can find that prediction?

spring 2019

when does the calendar come out for 2019? We are planning on having our wedding Spring 2019 in the Detroit, Michigan metro area.


My daughter is having an outdoor wedding September 15, 2018 in Crete IL. What can you tell me about the weather that week?

Wedding weather

In the days preceding September 15, we are forecasting “Scattered t-storms, cool.” From September 15 to 22, we are predicting “Showers, warm.” Best wishes (and weather)!


Do you think Illinois will have such severe storms like previous years in the spring and fall of 2018 ? I live closer to Chicago I see the chart says dryer then normal

severe storms?

You are correct in that we are predicting a slightly drier thank normal spring and a drier than normal summer. However, it is not out of the question that a storm might occur that would bring a severe storm with heavy precipitation…that could still result in below-normal precip for the period.


My fiance and I are deciding when to have our wedding reception, which will be outside either on either Saturday July 21st or July 28th in Indianapolis, IN. We have been together for 4 years and are very excited for this. Any information would be very helpful in trying to pick between these two dates!