Monticello, IL Weather Forecast
Local 7-day forecast
Partly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Monticello, IL in one place.
Partly sunny, with a high near 65. East southeast wind around 12 mph, with gusts as high as 16 mph.
Local Weather Overview
This forecast page for Monticello, 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: Apr 9, 2026 8:28 PM CDT.
The active forecast window currently covers Apr 11 to Apr 16, 2026 for Monticello, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 11 to Apr 16, 2026
- Latest sync
- Apr 9, 2026 8:28 PM CDT
- Forecast office
- ILX
- Source
- NOAA / NWS
Daily Outlook
This Week in Monticello
Tuesday looks like the warmest upcoming period in Monticello at 82 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 54 degrees F.
The strongest winds are forecast for Sunday at about 14 to 25 mph SSW.
Precipitation is mentioned in 9 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 9, 2026 8:28 PM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- ILX
- Radar station
- KILX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Mostly cloudy, with a low around 56. South southeast wind 10 to 14 mph, with gusts as high as 21 mph.
A slight chance of rain showers after 1pm. Mostly cloudy, with a high near 77. South southwest wind 14 to 25 mph, with gusts as high as 37 mph.
A slight chance of rain showers before 7pm, then showers and thunderstorms likely. Mostly cloudy, with a low around 61. South southwest wind 18 to 22 mph, with gusts as high as 31 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
Rain showers likely before 1pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 80. Chance of precipitation is 60%.
A chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 65. Chance of precipitation is 30%.
A chance of showers and thunderstorms before 7am, then a chance of showers and thunderstorms. Partly sunny, with a high near 82.
A chance of showers and thunderstorms before 7pm, then showers and thunderstorms likely. Mostly cloudy, with a low around 63.
Showers and thunderstorms likely. Mostly cloudy, with a high near 78.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 54.
A chance of showers and thunderstorms. Mostly sunny, with a high near 76.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Apr 11
|
Partly Sunny
|
65°F |
12 mph
ESE
|
|
Saturday Night
Apr 11
|
Mostly Cloudy
|
56°F |
10 to 14 mph
SSE
|
|
Sunday
Apr 12
|
Mostly Cloudy then Slight Chance Rain Showers
|
77°F |
14 to 25 mph
SSW
|
|
Sunday Night
Apr 12
|
Showers And Thunderstorms Likely
|
61°F |
18 to 22 mph
SSW
|
|
Monday
Apr 13
|
Rain Showers Likely then Chance Showers And Thunderstorms
|
80°F |
21 mph
SSW
|
|
Monday Night
Apr 13
|
Chance Showers And Thunderstorms
|
65°F |
17 mph
SSW
|
|
Tuesday
Apr 14
|
Chance Showers And Thunderstorms
|
82°F |
16 to 21 mph
SSW
|
|
Tuesday Night
Apr 14
|
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
|
63°F |
18 mph
SSW
|
|
Wednesday
Apr 15
|
Showers And Thunderstorms Likely
|
78°F |
17 to 22 mph
SW
|
|
Wednesday Night
Apr 15
|
Chance Showers And Thunderstorms
|
54°F |
12 to 17 mph
SW
|
|
Thursday
Apr 16
|
Chance Showers And Thunderstorms
|
76°F |
10 to 15 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Monticello.
