Peru, IL Weather Forecast
Local 7-day forecast
Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Peru, IL in one place.
Showers and thunderstorms. Cloudy, with a high near 65. South southeast wind around 5 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
Local Weather Overview
This forecast page for Peru, IL is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Oct 15, 2026 3:40 PM CDT.
The active forecast window currently covers Oct 15 to Oct 21, 2026 for Peru, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 15 to Oct 21, 2026
- Latest sync
- Oct 15, 2026 3:40 PM CDT
- Forecast office
- LOT
- Source
- NOAA / NWS
Daily Outlook
This Week in Peru
Wednesday looks like the warmest upcoming period in Peru at 74 degrees F.
Friday Night is the coolest period ahead with temperatures near 33 degrees F.
The strongest winds are forecast for Tonight at about 5 to 20 mph W.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 15, 2026 3:40 PM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- LOT
- Radar station
- KLOT
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A chance of showers and thunderstorms before midnight. Cloudy. Low around 46, with temperatures rising to around 49 overnight. West wind 5 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.
A chance of rain showers after noon. Mostly cloudy, with a high near 53. Northwest wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 40%.
A slight chance of rain showers before 7pm, then areas of frost. Mostly clear, with a low around 33. North northwest wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.
Widespread frost before 9am. Sunny, with a high near 58. Northwest wind 0 to 5 mph.
Clear, with a low around 37.
Patchy frost before 7am. Sunny, with a high near 66.
Mostly clear, with a low around 41.
Mostly sunny, with a high near 70.
Partly cloudy, with a low around 43.
Mostly sunny, with a high near 73.
Mostly clear, with a low around 46.
Sunny, with a high near 74.
Mostly clear, with a low around 50.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
This Afternoon
Oct 15
|
Showers And Thunderstorms
|
65°F |
5 mph
SSE
|
|
Tonight
Oct 15
|
Chance Showers And Thunderstorms then Cloudy
|
46°F |
5 to 20 mph
W
|
|
Friday
Oct 16
|
Mostly Cloudy then Chance Rain Showers
|
53°F |
15 to 20 mph
NW
|
|
Friday Night
Oct 16
|
Slight Chance Rain Showers then Areas Of Frost
|
33°F |
10 to 15 mph
NNW
|
|
Saturday
Oct 17
|
Widespread Frost then Sunny
|
58°F |
0 to 5 mph
NW
|
|
Saturday Night
Oct 17
|
Clear
|
37°F |
0 to 5 mph
SSW
|
|
Sunday
Oct 18
|
Patchy Frost then Sunny
|
66°F |
5 to 10 mph
SSW
|
|
Sunday Night
Oct 18
|
Mostly Clear
|
41°F |
0 to 5 mph
S
|
|
Monday
Oct 19
|
Mostly Sunny
|
70°F |
0 to 5 mph
SSW
|
|
Monday Night
Oct 19
|
Partly Cloudy
|
43°F |
0 mph
|
|
Tuesday
Oct 20
|
Mostly Sunny
|
73°F |
0 mph
|
|
Tuesday Night
Oct 20
|
Mostly Clear
|
46°F |
0 mph
|
|
Wednesday
Oct 21
|
Sunny
|
74°F |
0 to 5 mph
ESE
|
|
Wednesday Night
Oct 21
|
Mostly Clear
|
50°F |
0 to 5 mph
SE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Peru.
