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

Today's forecast for Potomac shows a low of 25 degrees Fahrenheit. A 20 percent chance of snow before 5am.

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

The 7-day forecast for Potomac shows highs from 6 to 49 degrees and lows from -6 to 36 degrees Fahrenheit. Expect precipitation on 4 days with chances of 20% or higher.

Will it rain in Potomac, IL this week?

Yes, rain is possible in Potomac this week. Precipitation chances: Thursday (20% chance), Saturday (100% chance), Wednesday (50% chance), Thursday (50% chance).

How accurate is the Potomac weather forecast?

WeatherForYou provides highly accurate Potomac 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.

Potomac, IL Weather Forecast and Current Conditions

Current Conditions From Nearby Station

Switch to Metric Units

27°F
Feels Like 22°F

Humidity 90% Dew Point 24°F Wind ENE 4 MPH Gusts 8 Barometer 30.1 in.

Report from a MADIS/MESONET weather station 9 mi. SSW of central Potomac
at 3:30 AM Fri, Dec 12, 2025

Point Forecast at a Glance

ThuDec 11

20%

FriDec 12

SatDec 13

100%

-6

SunDec 14

-6

MonDec 15

TueDec 16

WedDec 17

Jump to detailed forecast ↓

7-Day Temperature Trend

Week Ahead Summary

High temperatures dip from 32°F to a low of 6°F mid-week, then warm to 45°F. Some precipitation possible, including both rain and snow.

Climate Context

This week's forecast shows temperatures running 9°F below the historical average for December. Normal highs for this period are around 39°F with lows around 23°F.

This Date in Weather History

1967 - From December 12th through the 20th a series of snowstorms buries Flagstaff, AZ with nearly 85 inches of snow.

Potomac, IL 7 Day Weather Forecast Details

Thursday Dec 11

Night: A 20 percent chance of snow before 5am. Cloudy, with a low around 25. East northeast wind around 5 mph.

Friday Dec 12

Day: Cloudy, with a high near 32. Light and variable wind becoming west northwest around 6 mph in the afternoon.

Night: Cloudy, with a low around 12. Wind chill values between 5 and 10. West wind 7 to 10 mph, with gusts as high as 17 mph.

Saturday Dec 13

Day: Snow. High near 20. Wind chill values between zero and 8. North northwest wind 7 to 9 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.

Night: Mostly cloudy, then gradually becoming mostly clear, with a low around -6. Northwest wind 8 to 10 mph, with gusts as high as 16 mph.

Sunday Dec 14

Day: Sunny and cold, with a high near 6. Northwest wind 5 to 10 mph, with gusts as high as 16 mph.

Night: Mostly clear, with a low around -6. Calm wind becoming south around 6 mph after midnight.

Monday Dec 15

Day: Mostly sunny, with a high near 21.

Night: Partly cloudy, with a low around 14.

Tuesday Dec 16

Day: Mostly sunny, with a high near 35.

Night: Mostly cloudy, with a low around 29.

Wednesday Dec 17

Day: Partly sunny, with a high near 45.

Night: A chance of rain. Mostly cloudy, with a low around 36.

Thursday Dec 18

Day: A chance of rain. Partly sunny, with a high near 49.

About Potomac, IL

Potomac ( ) is a village in Vermilion County, Illinois, United States. It is part of the Danville, Illinois Metropolitan Statistical Area. The population was 750 at the 2010 census.

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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