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

Today's forecast for Algonquin shows a low of 19 degrees Fahrenheit. Mostly cloudy, with a low around 19.

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

The 7-day forecast for Algonquin shows highs from 6 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 Algonquin, IL this week?

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

How accurate is the Algonquin weather forecast?

WeatherForYou provides highly accurate Algonquin 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.

Algonquin, IL Weather Forecast and Current Conditions

Current Conditions From Nearby Local Station

Switch to Metric Units

21°F
Feels Like 21°F

Humidity 83% Dew Point 16°F Wind WNW 1 MPH Gusts 1 Barometer 29.96 in.

Report from a personal weather station 1.1 mi. SW of central Algonquin
at 1:23 AM Fri, Dec 12, 2025

Point Forecast at a Glance

ThuDec 11

FriDec 12

30%

SatDec 13

40%

-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 27°F to a low of 6°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 11°F below the historical average for December. Normal highs for this period are around 36°F with lows around 21°F.

This Date in Weather History

1988 - Arctic cold invaded the central and eastern U.S. Sault Ste Marie MI reported a record low of 14 degrees below zero, and International Falls MN was the cold spot in the nation with a low of 25 degrees below zero. Temperatures remained below zero all day over parts of eastern Upper Michigan and northern New England.

Algonquin, IL 7 Day Weather Forecast Details

Thursday Dec 11

Night: Mostly cloudy, with a low around 19. Calm wind becoming north around 5 mph.

Friday Dec 12

Day: A 30 percent chance of snow, mainly between 9am and 3pm. Partly sunny, with a high near 27. North 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 2. Wind chill values as low as -13. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.

Saturday Dec 13

Day: A 40 percent chance of snow. Mostly cloudy and cold, with a high near 9. Wind chill values as low as -14. West northwest wind 10 to 15 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 6.

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 13.

Tuesday Dec 16

Day: Partly sunny, with a high near 34.

Night: Mostly cloudy, with a low around 29.

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.

About Algonquin, IL

Algonquin is a village in McHenry and Kane counties, Illinois, in the United States. It is a suburb of Chicago, located approximately 40 miles (64 km) northwest of the Loop. As of the 2020 census, the village's population was 29,700. The village is known as "The Gem of the Fox River Valley", referring to the location of its downtown.

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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