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

Today's forecast for Peru shows a low of 0 degrees Fahrenheit. Partly cloudy, with a low around 0.

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

The 7-day forecast for Peru shows highs from 13 to 33 degrees and lows from -4 to 22 degrees Fahrenheit. Expect precipitation on 4 days with chances of 20% or higher.

Will it rain in Peru, IL this week?

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

How accurate is the Peru weather forecast?

WeatherForYou provides highly accurate Peru 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.

Peru, IL Weather Forecast and Current Conditions

Current Conditions From Nearby Local Station

Switch to Metric Units

9°F
Feels Like -2°F

Humidity 71% Dew Point 1°F Wind NNW 7 MPH Barometer 30.35 in.

Visibility 10 mi.

Report from a NOAA weather station 1.9 mi. NW of central Peru
at 3:35 AM Thu, Dec 4, 2025

Point Forecast at a Glance

WedDec 3

ThuDec 4

-4

FriDec 5

SatDec 6

SunDec 7

MonDec 8

TueDec 9

7-Day Temperature Trend

Week Ahead Summary

High temperatures climb from 13°F to a high of 33°F by week's end. Some snow possible with at least 3 days showing precipitation chances of 20% or higher.

Climate Context

This week's forecast shows temperatures running 10°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

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.

Peru, IL 7 Day Weather Forecast Details

Wednesday Dec 3

Night: Partly cloudy, with a low around 0. Wind chill values as low as -8. North northwest wind 5 to 10 mph.

Thursday Dec 4

Day: Sunny, with a high near 13. Wind chill values as low as -10. North northwest wind around 5 mph becoming calm in the morning.

Night: Mostly clear, with a low around -4. Wind chill values as low as -15. South wind around 5 mph, with gusts as high as 10 mph.

Friday Dec 5

Day: Mostly sunny, with a high near 28. Wind chill values as low as -6. South southwest wind 5 to 10 mph, with gusts as high as 15 mph.

Night: Mostly cloudy, with a low around 21. South southwest wind 5 to 10 mph becoming west after midnight. Winds could gust as high as 15 mph.

Saturday Dec 6

Day: Mostly cloudy, with a high near 29.

Night: A 40 percent chance of snow. Mostly cloudy, with a low around 14.

Sunday Dec 7

Day: Partly sunny, with a high near 22.

Night: Mostly cloudy, with a low around 3.

Monday Dec 8

Day: Partly sunny, with a high near 22.

Night: A chance of snow. Mostly cloudy, with a low around 14.

Tuesday Dec 9

Day: Mostly cloudy, with a high near 33.

Night: A chance of snow. Mostly cloudy, with a low around 22.

Wednesday Dec 10

Day: A chance of rain. Mostly cloudy, with a high near 33.

About Peru, IL

Peru is a city in LaSalle and Bureau counties, Illinois, United States. The population was 9,896 at the 2020 census, down from 10,295 at the 2010 census. It is part of the Ottawa, IL Micropolitan Statistical Area. Peru and its twin city, LaSalle, make up the core of Illinois Valley.

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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