Monticello, IL Weather Forecast
Local 7-day forecast
Mostly Clear
Track current conditions, temperature changes, wind, and the full daily outlook for Monticello, IL in one place.
Mostly clear, with a low around 57. Northeast wind 7 to 12 mph, with gusts as high as 17 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: Jun 1, 2026 8:08 PM CDT.
The active forecast window currently covers Jun 1 to Jun 8, 2026 for Monticello, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jun 1 to Jun 8, 2026
- Latest sync
- Jun 1, 2026 8:08 PM CDT
- Forecast office
- ILX
- Source
- NOAA / NWS
Daily Outlook
This Week in Monticello
Monday looks like the warmest upcoming period in Monticello at 86 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 53 degrees F.
The strongest winds are forecast for Thursday at about 6 to 15 mph SSW.
Precipitation is mentioned in 7 upcoming forecast periods.
Forecast Details
- Last updated
- Jun 1, 2026 8:08 PM CDT
- Coverage
- 8 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
Sunny, with a high near 79. East northeast wind 7 to 13 mph, with gusts as high as 17 mph.
Clear, with a low around 53. East northeast wind 5 to 12 mph, with gusts as high as 16 mph.
Sunny, with a high near 80. East southeast wind around 7 mph.
Mostly clear, with a low around 56. South southeast wind around 7 mph.
Sunny, with a high near 84. South southwest wind 6 to 15 mph, with gusts as high as 21 mph.
Mostly clear, with a low around 62. South southwest wind around 12 mph, with gusts as high as 17 mph.
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 84.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 65. Chance of precipitation is 50%.
A chance of showers and thunderstorms before 7am, then a chance of showers and thunderstorms between 7am and 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 84.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 65.
A chance of showers and thunderstorms before 7am, then a chance of showers and thunderstorms between 7am and 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 85.
A chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Partly cloudy, with a low around 66.
A chance of showers and thunderstorms before 1pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 86.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tonight
Jun 1
|
Mostly Clear
|
57°F |
7 to 12 mph
NE
|
|
Tuesday
Jun 2
|
Sunny
|
79°F |
7 to 13 mph
ENE
|
|
Tuesday Night
Jun 2
|
Clear
|
53°F |
5 to 12 mph
ENE
|
|
Wednesday
Jun 3
|
Sunny
|
80°F |
7 mph
ESE
|
|
Wednesday Night
Jun 3
|
Mostly Clear
|
56°F |
7 mph
SSE
|
|
Thursday
Jun 4
|
Sunny
|
84°F |
6 to 15 mph
SSW
|
|
Thursday Night
Jun 4
|
Mostly Clear
|
62°F |
12 mph
SSW
|
|
Friday
Jun 5
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
84°F |
10 to 15 mph
SSW
|
|
Friday Night
Jun 5
|
Chance Showers And Thunderstorms
|
65°F |
13 mph
SSW
|
|
Saturday
Jun 6
|
Chance Showers And Thunderstorms
|
84°F |
10 to 14 mph
SW
|
|
Saturday Night
Jun 6
|
Chance Showers And Thunderstorms
|
65°F |
8 to 12 mph
SW
|
|
Sunday
Jun 7
|
Chance Showers And Thunderstorms
|
85°F |
10 mph
S
|
|
Sunday Night
Jun 7
|
Chance Showers And Thunderstorms
|
66°F |
9 mph
SSE
|
|
Monday
Jun 8
|
Chance Showers And Thunderstorms
|
86°F |
13 mph
SE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Monticello.
