What is today's weather forecast for Harrisburg, IL?

Today's forecast for Harrisburg shows a high of 39 degrees and a low of 22 degrees Fahrenheit. Partly sunny.

What is the 7-day weather forecast for Harrisburg, IL?

The 7-day forecast for Harrisburg shows highs from 39 to 72 degrees and lows from 22 to 54 degrees Fahrenheit. Expect precipitation on 2 days with chances of 20% or higher.

Will it rain in Harrisburg, IL this week?

Yes, rain is possible in Harrisburg this week. Precipitation chances: Saturday (46% chance), Sunday (49% chance).

How accurate is the Harrisburg weather forecast?

WeatherForYou provides highly accurate Harrisburg forecasts using National Weather Service data and current conditions from the nearest available weather stations, often miles closer than regional airports, for the most precise local forecasts.

Harrisburg, IL Weather Forecast and Current Conditions

Current Conditions Switch to Metric Units

29°F
Feels Like 20°F

Humidity 48% Dew Point 12°F Wind NW 10 MPH Gusts 18 Barometer N/A

Report from a MADIS/MESONET weather station 22 miles SSW of central Harrisburg
at 12:08 AM Mon, Nov 10, 2025

Current Conditions Switch to Metric Units

29°F
Feels Like 20°F

Humidity 48% Dew Point 12°F Wind NW 10 MPH Gusts 18 Barometer N/A

Report from a MADIS/MESONET weather station 22 miles SSW of central Harrisburg
at 12:08 AM Mon, Nov 10, 2025

Point Forecast at a Glance

MonNov 10

TueNov 11

WedNov 12

ThuNov 13

FriNov 14

SatNov 15

SunNov 16

50%

7-Day Temperature Trend

Week Ahead Summary

High temperatures climb from 39°F to a high of 72°F by week's end. Some rain possible with at least 2 days showing precipitation chances of 20% or higher.

Climate Context

This week's forecast shows temperatures running 5°F above the historical average for November. Normal highs for this period are around 56°F with lows around 35°F.

This Date in Weather History

1864 - On Election Night, a violent tornado strikes a ferry on the Mississippi River near Chester, Illinois, blowing away all but the hull. The boiler and engines are found up the bluff. Half of Chester was destroyed, and twenty died during the storm.

Harrisburg, IL 7 Day Weather Forecast Details

Monday Nov 10

Day: Partly sunny. High near 39, with temperatures falling to around 35 in the afternoon. Northwest wind 10 to 21 mph, with gusts as high as 29 mph.

Night: Mostly clear. Low around 22, with temperatures rising to around 24 overnight. West southwest wind 2 to 6 mph.

Tuesday Nov 11

Day: Mostly sunny, with a high near 51. South southwest wind 6 to 20 mph, with gusts as high as 26 mph.

Night: Mostly clear, with a low around 39. Southwest wind 9 to 15 mph, with gusts as high as 25 mph.

Wednesday Nov 12

Day: Sunny, with a high near 64. West southwest wind 3 to 9 mph.

Night: Mostly clear, with a low around 34. West northwest wind around 2 mph.

Thursday Nov 13

Day: Mostly sunny, with a high near 63. East southeast wind 1 to 6 mph.

Night: Partly cloudy, with a low around 46. South southeast wind 3 to 7 mph.

Friday Nov 14

Day: Mostly sunny, with a high near 72. South wind 7 to 13 mph, with gusts as high as 20 mph.

Night: Partly cloudy, with a low around 54. South wind around 9 mph.

Saturday Nov 15

Day: Mostly sunny, with a high near 72. South wind 8 to 15 mph, with gusts as high as 22 mph.

Night: A chance of rain showers. Mostly cloudy, with a low around 53. South southeast wind around 10 mph, with gusts as high as 18 mph.

Sunday Nov 16

Day: A chance of rain showers. Partly sunny, with a high near 65. South southwest wind 10 to 15 mph, with gusts as high as 21 mph.

Sun & Moon Monthly

First Light 6:02 AM

Sunrise 6:30 AM

Sunset 4:48 PM

Last Light 5:16 PM

Moonrise 8:44 PM

Moonset 12:05 PM

Moon Phase

Local Parks Weather - Plan Ahead to Enjoy Your Day

Weather Near Harrisburg

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Contiguous United States Extremes

Sun's High Temperature
97 at Corona, CA and Indio, CA

Sun's Low Temperature
-4 at Tioga, ND

Weather Folklore

Burning wood pops more before rain and snow.

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About Harrisburg, IL

Harrisburg () is a city in and the county seat of Saline County, Illinois, United States. It is located about 55 miles (88.51392 km) southwest of Evansville, Indiana, and 111 mi (179 km) southeast of St. Louis, Missouri. Its 2020 population was 8,219, and the surrounding Harrisburg Township had a population of 10,037, including the city residents. Harrisburg is included in the Illinois–Indiana–Kentucky tri-state area and is the principal city in the Harrisburg micropolitan statistical area with a combined population of 24,913. Located at the concurrency of U.S. Route 45, Illinois Route 13, Illinois Route 145, and Illinois Route 34, Harrisburg is known as the "Gateway to the Shawnee National Forest", and is also known for the Ohio River flood of 1937, the old Crenshaw House (also known as the Old Slave House), the Tuttle Bottoms Monster, prohibition-era gangster Charlie Birger, and the 2012 EF4 tornado. A Cairo and Vincennes Railroad boomtown, the city was one of the leading bituminous coal-mining distribution hubs of the American Midwest between 1900 and 1937. At its peak, Harrisburg's population reached 16,000 by the early 1930s. The city had one of the largest downtown districts in Southern Illinois. The city was the 20th-most populated city in Illinois outside the Chicago metropolitan area and the most-populous city in Southern Illinois outside the Metro East in 1930. However, the city has seen an economic decline due to the decreased demand for high-sulfur coal, the removal of the New York Central railroad, and tributary lowlands leaving much area around the city unfit for growth due to flood risks.

Content from Wikipedia, licensed under CC BY-SA 3.0.

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Current conditions: We use the nearest available station to your location - including professional MESONET/MADIS and local weather stations - often miles closer than regional airports.

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