2020 Long Range Weather Forecast for Alton, IL

Get the Long Range Weather for Your Location

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 2020 Old Farmer’s Almanac, available online and in stores.

Note: Long range forecasts are regional, not city-specific.

Free 2-Month Weather Forecast

April 2020 Long Range Weather Forecast for Heartland
DatesWeather Conditions
Apr 1-5Rain, then sunny, cool
Apr 6-17Showers, turning warm
Apr 18-23Scattered t-storms, warm
Apr 24-30Scattered t-storms; cool, then warm
Apriltemperature 55° (1° above avg.)
precipitation 3.5" (avg.)

May 2020 Long Range Weather Forecast for Heartland
DatesWeather Conditions
May 1-10Isolated t-storms, cool
May 11-12Sunny, hot
May 13-23A few t-storms, warm
May 24-31Scattered t-storms; cool, then warm
Maytemperature 66° (2° above avg.)
precipitation 3.5" (1" below avg.)

Annual Weather Summary
November 2019 to October 2020

Winter temperatures will be below normal, on average, with above-normal snowfall and slightly above-normal precipitation. The coldest periods will be in early to mid-January, early and mid-February, and early March. The snowiest periods will be in early to mid-December, early to mid-January, and mid-February. April and May will be warmer and slightly drier than normal. Summer will be slightly warmer and rainier than normal, with the hottest periods in mid- and late June, mid-July, and mid- and late August. September and October will bring above-normal temperatures and below-normal rainfall.

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 2019 to October 2020

Temperature and Precipitation Chart, November 2019 to October 2020 for Alton, IL

Reader Comments

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difficult to rely on?

The Editors's picture

The weather forecasts are deviations from normal weather conditions. For more on that, see here: https://www.almanac.com/content/how-we-predict-weather

What’s more, “Mild” is relative: Mild in Florida is not the same temp as Mild in Michigan in January or February. (I know; you’re not in Michigan but the point is, it’s a relative term—and it relates back to the idea of norms or averages.

We do not predict or account for “snow on the ground,” but if that’s what you’ve got, then it must be cold…so maybe it’s not mild, even relatively speaking. But we have not process for checking every aspect of our prediction accuracy at any given time (like now).

Thanks for sharing your thoughts—and experience, though.

WEdding

We are planning a June 23, 2018 in St Louis, MO. What will the weather be like that day.

August Wedding

We have a wedding planned for August 11, 2018. Will this fall in that period of much hotter temperatures? We are hoping for an outdoor ceremony.

Temp & precip

what will the weather be valentines week in central iowa

Valentine Forecast

The Editors's picture

We are predicting the week of Valentine’s Day to be sunny with milder than average temperatures. Enjoy the holiday!

September Wedding

Our wedding is planned for Saturday September 15, 2018. We are planning for an outdoor ceremony. What is the chance of the weather being that day?

March 31st, Wedding

My wedding is coming up on March 31st of this year. Can you provide me with some idea on what I can expect for weather conditions (temp, rain or shine, etc...)? Thanks!

Weather Memorial Weekend

We are planning an outdoor event in Lake Saint Louis area, what is chances of rain that weekend and week before?
Thank you

APRIL BIRTHDAY PARTY

WE ARE PLANNING A BIRTHDAY PARTY APRIL 28TH. JUST CHECKING TO SEE WHAT THE WEATHER MIGHT BE AROUND KIRKSVILLE, MO FOR THAT DATE.

THANK YOU

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