Marengo, IL Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Marengo, IL in one place.
Sunny, with a high near 81.
Local Weather Overview
This forecast page for Marengo, 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: May 28, 2026 1:38 AM CDT.
The active forecast window currently covers May 30 to Jun 3, 2026 for Marengo, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- May 30 to Jun 3, 2026
- Latest sync
- May 28, 2026 1:38 AM CDT
- Forecast office
- LOT
- Source
- NOAA / NWS
Daily Outlook
This Week in Marengo
Wednesday looks like the warmest upcoming period in Marengo at 82 degrees F.
Saturday Night is the coolest period ahead with temperatures near 53 degrees F.
The strongest winds are forecast for Saturday at about 5 to 15 mph E.
The forecast from May 30 through Jun 3 stays mostly dry.
Forecast Details
- Last updated
- May 28, 2026 1:38 AM CDT
- Coverage
- 5 days
- Time zone
- America/Chicago
- Forecast office
- LOT
- Radar station
- KMKX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Partly cloudy, with a low around 53.
Mostly sunny, with a high near 81.
Mostly clear, with a low around 55.
Mostly sunny, with a high near 80.
Mostly clear, with a low around 54.
Sunny, with a high near 79.
Clear, with a low around 53.
Sunny, with a high near 82.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
May 30
|
Sunny
|
81°F |
5 to 15 mph
E
|
|
Saturday Night
May 30
|
Partly Cloudy
|
53°F |
5 to 15 mph
E
|
|
Sunday
May 31
|
Mostly Sunny
|
81°F |
5 mph
ESE
|
|
Sunday Night
May 31
|
Mostly Clear
|
55°F |
0 to 5 mph
ENE
|
|
Monday
Jun 1
|
Mostly Sunny
|
80°F |
0 to 10 mph
NE
|
|
Monday Night
Jun 1
|
Mostly Clear
|
54°F |
5 to 15 mph
NE
|
|
Tuesday
Jun 2
|
Sunny
|
79°F |
5 to 10 mph
NE
|
|
Tuesday Night
Jun 2
|
Clear
|
53°F |
0 to 10 mph
NE
|
|
Wednesday
Jun 3
|
Sunny
|
82°F |
5 to 10 mph
NNW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Marengo.
