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

Today's forecast for Argonne shows a low of 4 degrees Fahrenheit. Patchy freezing fog after 11pm.

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

The 7-day forecast for Argonne shows highs from 22 to 34 degrees and lows from 4 to 29 degrees Fahrenheit. Expect precipitation on 7 days with chances of 20% or higher.

Will it rain in Argonne, IL this week?

Yes, rain is possible in Argonne this week. Precipitation chances: Friday (30% chance), Saturday (50% chance), Sunday (40% chance), Monday (50% chance), Tuesday (50% chance), Wednesday (50% chance), Thursday (50% chance).

How accurate is the Argonne weather forecast?

WeatherForYou provides highly accurate Argonne 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.

Argonne, IL Weather Forecast and Current Conditions

WEATHER ALERTS - Hydrologic Outlook

Current Conditions From Nearby Local Station

Switch to Metric Units

12°F
Feels Like 12°F

Humidity 73% Dew Point 5°F Wind Calm Barometer 29.56 in.

Report from a personal weather station 3.3 mi. W of central Argonne
at 5:03 PM Thu, Dec 4, 2025

Point Forecast at a Glance

ThuDec 4

FriDec 5

SatDec 6

SunDec 7

40%

MonDec 8

TueDec 9

WedDec 10

50%

7-Day Temperature Trend

Week Ahead Summary

High temperatures remain relatively stable through the week, ranging from 22°F to 34°F. Unsettled weather expected with wintry mix likely on at least 6 days.

Climate Context

This week's forecast shows temperatures running 9°F below the historical average for December. Normal highs for this period are around 37°F with lows around 22°F.

This Date in Weather History

1982 - The temperature in New York City's Central Park reached 72 degrees to establish a record high for December. The month as a whole was also the warmest of record.

Argonne, IL 7 Day Weather Forecast Details

Thursday Dec 4

Night: Patchy freezing fog after 11pm. Increasing clouds, with a low around 4. Wind chill values as low as -9. South southwest wind 5 to 10 mph, with gusts as high as 15 mph.

Friday Dec 5

Day: Mostly cloudy, then gradually becoming sunny, with a high near 28. Wind chill values as low as -4. South southwest wind 10 to 15 mph, with gusts as high as 20 mph.

Night: Patchy snow and freezing rain. Mostly cloudy, with a steady temperature around 29. Southwest wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

Saturday Dec 6

Day: Mostly cloudy, with a high near 29. West northwest wind 5 to 10 mph.

Night: A 50 percent chance of snow, mainly after midnight. Mostly cloudy, with a low around 19. Calm wind becoming north around 5 mph after midnight. Winds could gust as high as 10 mph.

Sunday Dec 7

Day: A 40 percent chance of snow before noon. Mostly cloudy, with a high near 26.

Night: A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 8.

Monday Dec 8

Day: Partly sunny, with a high near 22.

Night: Snow likely, mainly after midnight. Mostly cloudy, with a low around 14.

Tuesday Dec 9

Day: Mostly cloudy, with a high near 32.

Night: A chance of snow. Cloudy, with a low around 23.

Wednesday Dec 10

Day: Rain and snow likely. Mostly cloudy, with a high near 34.

Night: A chance of snow. Mostly cloudy, with a low around 13.

Thursday Dec 11

Day: A chance of snow. Partly sunny, with a high near 23.

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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