What is today's weather forecast for Mc Cullom Lake, IL?

Today's forecast for Mc Cullom Lake shows a low of 17 degrees Fahrenheit. Partly cloudy, with a low around 17.

What is the 7-day weather forecast for Mc Cullom Lake, IL?

The 7-day forecast for Mc Cullom Lake shows highs from 7 to 40 degrees and lows from -7 to 30 degrees Fahrenheit. Expect precipitation on 4 days with chances of 20% or higher.

Will it rain in Mc Cullom Lake, IL this week?

Yes, rain is possible in Mc Cullom Lake this week. Precipitation chances: Friday (30% chance), Saturday (30% chance), Wednesday (50% chance), Thursday (50% chance).

How accurate is the Mc Cullom Lake weather forecast?

WeatherForYou provides highly accurate Mc Cullom Lake 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.

Mc Cullom Lake, IL Weather Forecast and Current Conditions

Current Conditions From Nearby Local Station

Switch to Metric Units

19°F
Feels Like 19°F

Humidity 82% Dew Point 14°F Wind Calm Barometer 30.09 in.

Report from a personal weather station 2.5 mi. SSW of central Mc Cullom Lake
at 1:39 AM Fri, Dec 12, 2025

Point Forecast at a Glance

ThuDec 11

FriDec 12

30%

SatDec 13

30%

-7

SunDec 14

-5

MonDec 15

TueDec 16

WedDec 17

Jump to detailed forecast ↓

7-Day Temperature Trend

Week Ahead Summary

High temperatures dip from 26°F to a low of 7°F mid-week, then warm to 40°F. Some precipitation possible, including both rain and snow.

Climate Context

This week's forecast shows temperatures running 10°F below the historical average for December. Normal highs for this period are around 35°F with lows around 20°F.

This Date in Weather History

1932 - Very cold weather prevailed along the West Coast. San Francisco received 0.8 inch of snow, and at the airport the temperature dipped to 20 degrees. At Sacramento CA, the mercury dipped to 17 degrees to establish an all-time record low for that location. Morning lows were below freezing from the 9th to the 15th at Sacramento, and the high on the 11th was just 34 degrees. The cold wave dealt severe damage to truck crops and orange groves in the Sacramento Valley.

Mc Cullom Lake, IL 7 Day Weather Forecast Details

Thursday Dec 11

Night: Partly cloudy, with a low around 17. Calm wind becoming north northwest around 5 mph.

Friday Dec 12

Day: A 30 percent chance of snow, mainly between 9am and 3pm. Increasing clouds, with a high near 26. Northwest wind 5 to 10 mph becoming west southwest in the morning. Winds could gust as high as 15 mph.

Night: A 20 percent chance of snow showers before midnight. Mostly cloudy, with a low around 1. Wind chill values as low as -15. West northwest wind 10 to 15 mph, with gusts as high as 25 mph.

Saturday Dec 13

Day: A 30 percent chance of snow. Mostly cloudy and cold, with a high near 8. Wind chill values as low as -16. West northwest wind 10 to 15 mph, with gusts as high as 20 mph.

Night: Mostly clear, with a low around -7. Northwest wind 10 to 15 mph, with gusts as high as 20 mph.

Sunday Dec 14

Day: Sunny and cold, with a high near 7.

Night: Partly cloudy, with a low around -5.

Monday Dec 15

Day: Partly sunny, with a high near 20.

Night: Mostly cloudy, with a low around 12.

Tuesday Dec 16

Day: Partly sunny, with a high near 34.

Night: Mostly cloudy, with a low around 28.

Wednesday Dec 17

Day: Mostly cloudy, with a high near 40.

Night: A chance of rain. Mostly cloudy, with a low around 30.

Thursday Dec 18

Day: A chance of rain. Partly sunny, with a high near 38.

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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