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

Today's forecast for Walnut shows a high of 28 degrees and a low of 15 degrees Fahrenheit. Cloudy, with a high near 28.

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

The 7-day forecast for Walnut shows highs from 28 to 45 degrees and lows from 9 to 30 degrees Fahrenheit. Expect precipitation on 2 days with chances of 20% or higher.

Will it rain in Walnut, IL this week?

Yes, rain is possible in Walnut this week. Precipitation chances: Wednesday (50% chance), Thursday (70% chance).

How accurate is the Walnut weather forecast?

WeatherForYou provides highly accurate Walnut 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.

Walnut, IL Weather Forecast and Current Conditions

Current Conditions

Switch to Metric Units

24°F
Feels Like 17°F

Humidity 70% Dew Point 16°F Wind SW 6 MPH Gusts 7 Barometer 30.01 in.

Solar Rad 197 w/m²

Report from a MADIS/MESONET weather station 18.4 mi. NNW of central Walnut
at 2:50 PM Mon, Dec 15, 2025

Point Forecast at a Glance

MonDec 15

TueDec 16

WedDec 17

ThuDec 18

70%

FriDec 19

SatDec 20

SunDec 21

Jump to detailed forecast ↓

7-Day Temperature Trend

Week Ahead Summary

Variable high temperatures with a significant drop to 28°F mid-week, recovering to 34°F. Some precipitation possible with wintry mix on at least one day.

Climate Context

Temperatures are expected to be near normal for this time of year, with highs around 36°F and lows around 20°F.

This Date in Weather History

1839 - The first of triple storms hit Massachusetts Bay. The storm produced whole gales, and more than 20 inches of snow in interior New England. There was great loss of life at Gloucester MA.

Walnut, IL 7 Day Weather Forecast Details

Monday Dec 15

Day: Cloudy, with a high near 28. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.

Night: Patchy freezing fog after 11pm. Mostly cloudy, with a low around 15. South wind around 5 mph.

Tuesday Dec 16

Day: Patchy freezing fog before 10am. Partly sunny, with a high near 36. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.

Night: Mostly cloudy, with a low around 27. Southwest wind 5 to 10 mph becoming west after midnight. Winds could gust as high as 20 mph.

Wednesday Dec 17

Day: Mostly sunny, with a high near 37.

Night: A 50 percent chance of rain after midnight. Mostly cloudy, with a low around 30.

Thursday Dec 18

Day: Rain likely before noon, then a chance of rain and snow. Mostly cloudy, with a high near 45. Breezy. Chance of precipitation is 70%.

Night: Mostly cloudy, with a low around 9. Breezy.

Friday Dec 19

Day: Mostly sunny, with a high near 29.

Night: Mostly cloudy, with a low around 22.

Saturday Dec 20

Day: Partly sunny, with a high near 43.

Night: Partly cloudy, with a low around 21.

Sunday Dec 21

Day: Mostly sunny, with a high near 34.

About Walnut, IL

Walnut is a village in Bureau County, Illinois, United States. The residents of Walnut are known as "Walnutions" a unique demonym. The population was 1,311 at the 2020 census, down from 1,416 at the 2010 census and 1,461 at the 2000 census. It is part of the Ottawa Micropolitan Statistical Area. The village was incorporated on October 26, 1876.

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

How We Provide Better Local Weather

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.

Forecasts: National Weather Service point forecasts predict for your specific area, not broad regional zones, making them far more relevant to your location.

Your favorites: