Marengo, IL Weather Forecast
Local 7-day forecast
Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Marengo, IL in one place.
Mostly sunny, with a high near 82. West wind 5 to 15 mph, with gusts as high as 25 mph.
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: Oct 12, 2026 3:53 AM CDT.
The active forecast window currently covers Oct 13 to Oct 18, 2026 for Marengo, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 13 to Oct 18, 2026
- Latest sync
- Oct 12, 2026 3:53 AM CDT
- Forecast office
- LOT
- Source
- NOAA / NWS
Daily Outlook
This Week in Marengo
Tuesday looks like the warmest upcoming period in Marengo at 82 degrees F.
Friday Night is the coolest period ahead with temperatures near 33 degrees F.
The strongest winds are forecast for Friday at about 15 to 25 mph NW.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 12, 2026 3:53 AM CDT
- Coverage
- 6 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
Rain showers likely between 7pm and 10pm, then showers and thunderstorms. Mostly cloudy, with a low around 60. North wind 0 to 5 mph. Chance of precipitation is 80%.
Rain showers before 1pm. Mostly cloudy, with a high near 70. Chance of precipitation is 80%.
A chance of rain showers after 1am. Mostly cloudy, with a low around 52.
A chance of rain showers before 7am, then showers and thunderstorms likely. Mostly cloudy, with a high near 67.
Rain showers likely before 1am. Mostly cloudy, with a low around 46.
Partly sunny, with a high near 57.
Partly cloudy, with a low around 33.
Sunny, with a high near 56.
Mostly clear, with a low around 36.
Sunny, with a high near 63.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
Oct 13
|
Mostly Sunny
|
82°F |
5 to 15 mph
W
|
|
Tuesday Night
Oct 13
|
Showers And Thunderstorms
|
60°F |
0 to 5 mph
N
|
|
Wednesday
Oct 14
|
Rain Showers
|
70°F |
0 to 10 mph
NE
|
|
Wednesday Night
Oct 14
|
Mostly Cloudy then Chance Rain Showers
|
52°F |
5 to 10 mph
ENE
|
|
Thursday
Oct 15
|
Showers And Thunderstorms Likely
|
67°F |
10 mph
ENE
|
|
Thursday Night
Oct 15
|
Rain Showers Likely
|
46°F |
5 to 15 mph
NNW
|
|
Friday
Oct 16
|
Partly Sunny
|
57°F |
15 to 25 mph
NW
|
|
Friday Night
Oct 16
|
Partly Cloudy
|
33°F |
0 to 15 mph
NNW
|
|
Saturday
Oct 17
|
Sunny
|
56°F |
0 to 5 mph
WNW
|
|
Saturday Night
Oct 17
|
Mostly Clear
|
36°F |
5 to 10 mph
SSW
|
|
Sunday
Oct 18
|
Sunny
|
63°F |
10 to 15 mph
SSW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Marengo.
