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

Today's forecast for Arnold shows a low of 4 degrees Fahrenheit. Partly cloudy, with a low around 4.

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

The 7-day forecast for Arnold shows highs from 17 to 39 degrees and lows from 0 to 27 degrees Fahrenheit. Expect precipitation on 2 days with chances of 20% or higher.

Will it rain in Arnold, IL this week?

Yes, rain is possible in Arnold this week. Precipitation chances: Saturday (40% chance), Wednesday (50% chance).

How accurate is the Arnold weather forecast?

WeatherForYou provides highly accurate Arnold 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.

Arnold, IL Weather Forecast and Current Conditions

Current Conditions From Nearby Station

Switch to Metric Units

15°F
Feels Like 3°F

Humidity 74% Dew Point 8°F Wind NNW 9 MPH Barometer 30.35 in.

Visibility 10 mi.

Report from a NOAA weather station 6.4 mi. WNW of central Arnold
at 3:15 AM Thu, Dec 4, 2025

Point Forecast at a Glance

WedDec 3

ThuDec 4

FriDec 5

SatDec 6

SunDec 7

MonDec 8

TueDec 9

7-Day Temperature Trend

Week Ahead Summary

High temperatures climb from 17°F to a high of 37°F by week's end. Mostly dry conditions with only one day showing snow chances.

Climate Context

This week's forecast shows temperatures running 10°F below the historical average for December. Normal highs for this period are around 40°F with lows around 24°F.

This Date in Weather History

1972 - Winds gusting to 70 mph sent the temperature at Livingston, MT, plunging from 52 degrees to 18 degrees in just twenty minutes.

Arnold, IL 7 Day Weather Forecast Details

Wednesday Dec 3

Night: Partly cloudy, with a low around 4. North wind around 10 mph, with gusts as high as 18 mph.

Thursday Dec 4

Day: Sunny, with a high near 17. Wind chill values between -8 and 2. North wind 5 to 8 mph becoming light and variable in the afternoon. Winds could gust as high as 15 mph.

Night: Mostly clear, with a low around 0. Wind chill values between -5 and -10. Light and variable wind becoming south 5 to 7 mph after midnight.

Friday Dec 5

Day: Sunny, with a high near 32. Wind chill values between -1 and 9. South wind 6 to 8 mph.

Night: Mostly cloudy, with a low around 22. South wind 5 to 7 mph becoming west after midnight.

Saturday Dec 6

Day: Mostly cloudy, with a high near 32. Calm wind becoming east northeast around 5 mph in the afternoon.

Night: A 40 percent chance of snow after midnight. Cloudy, with a low around 20. East northeast wind 5 to 7 mph.

Sunday Dec 7

Day: Mostly cloudy, with a high near 27.

Night: Mostly cloudy, with a low around 9.

Monday Dec 8

Day: Mostly sunny, with a high near 26.

Night: Mostly cloudy, with a low around 17.

Tuesday Dec 9

Day: Partly sunny, with a high near 37.

Night: Mostly cloudy, with a low around 27.

Wednesday Dec 10

Day: A chance of rain. Mostly cloudy, with a high near 39.

About Arnold, IL

Arnold, Illinois may refer to: Arnold, Carroll County, Illinois, an unincorporated community in Carroll County Arnold, Morgan County, Illinois, an unincorporated community in Morgan County

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.

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