2018 Long Range Weather Forecast for Alton, 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

April 2018 Long Range Weather Forecast for Heartland
DatesWeather Conditions
Apr 1-6Rain to snow, then sunny, cool
Apr 7-15Rainy, turning mild
Apr 16-21Sunny north, rainy periods south; turning cool
Apr 22-27Rain, then sunny, cool
Apr 28-30Rainy
Apriltemperature 53° (1° below avg.)
precipitation 5.5" (2" above avg.)

May 2018 Long Range Weather Forecast for Heartland
DatesWeather Conditions
May 1-13Rain, then sunny, cool
May 14-19Showers, cool
May 20-24T-storms, then sunny, warm
May 25-31T-storms, then sunny, warm
Maytemperature 63° (1° below avg.)
precipitation 4.5" (avg.)

Annual Weather Summary: November 2017 to October 2018

Winter will be milder than normal, with above-normal precipitation and snowfall. The coldest periods will be from late November into early December, from late December into early January, and in early February. The snowiest periods will be in mid-November, early to mid- and late December, and early February. April and May will be cooler and rainier than normal. Summer will be hotter than normal, with slightly below normal rainfall. The hottest periods will be in early and late June, early and late July, and mid-August. September and October will be warmer and rainier than normal.

Map showing Old Farmer's Almanac long range weather region number 10

About the Heartland Region

The Heartland long range weather region includes all or part of the following states: ILLINOIS (Alton, Galesburg, Moline, Quincy, Rock Island), IOWA (Cedar Rapids, Davenport, Des Moines, Sioux City, Waterloo), KANSAS (Kansas City, Olathe, Overland Park, Topeka, Wichita), MISSOURI (Columbia, Independence, Kansas City, Saint Louis, Springfield), NEBRASKA (Bellevue, Fremont, Grand Island, Lincoln, Omaha), SOUTH DAKOTA (Canton, Lennox, North Sioux City, Vermillion, Yankton), WISCONSIN (Baraboo, Fitchburg, Madison, Middleton, Monroe).

Heartland Neighboring Regions

Here are the regions that neighbor the Heartland long range weather region:

Temperature and Precipitation November 2017 to October 2018

Temperature and Precipitation Graph

Reader Comments

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April

Well reading the comments and that it’s supposed to be rainy...and we have a snowstorm today...wish I could post a picture...I wouldn’t be asking...lol

Weather in May

Daughters wedding is coming up on May the 5th 2018. What's the weather for eastern Iowa

Outside wedding Oct 5, 2018

I am having an outside wedding in Kansas City, MO on October 5, 2018. Hoping it doesn't rain and weather is good. Any answers?

graduation party

Hello, I am considering an outdoor graduation party on June 3, 2018. Can I expect good weather that day?

Wedding!

My wedding is also on June 3, 2018 in Springfield, MO. Any weather predictions for that day?

Outdoor wedding

I am having an outdoor wedding September 22 2018. Do I need to be considered and plan for a back up plan? TIA

It in central Illinois

It in central Illinois

May 26, 2018 weather

Daughter's outdoor wedding.....what can we look for weather wise??

Wedding early June

Getting married June 9th in Kansas City,MO. Wondering what the weather looks like for that day! Thank you

Getting married outside May

Getting married outside May 26th 2018, in Rock Island, IL. What is the weather supposed to be like?

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