Boulder, IL Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Boulder, IL in one place.
Sunny, with a high near 63. Southwest wind 0 to 3 mph.
Local Weather Overview
This forecast page for Boulder, 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: Nov 8, 2026 7:45 AM CST.
The active forecast window currently covers Nov 9 to Nov 14, 2026 for Boulder, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Nov 9 to Nov 14, 2026
- Latest sync
- Nov 8, 2026 7:45 AM CST
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in Boulder
Tuesday looks like the warmest upcoming period in Boulder at 66 degrees F.
Friday Night is the coolest period ahead with temperatures near 36 degrees F.
The strongest winds are forecast for Thursday at about 14 to 18 mph N.
Precipitation is mentioned in 2 upcoming forecast periods.
Forecast Details
- Last updated
- Nov 8, 2026 7:45 AM CST
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- LSX
- Radar station
- KLSX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Clear, with a low around 48. Southwest wind 2 to 6 mph.
Sunny, with a high near 66. West wind around 5 mph.
Mostly clear, with a low around 50.
A chance of rain after noon. Partly sunny, with a high near 63. Chance of precipitation is 30%.
A slight chance of rain before midnight. Mostly cloudy, with a low around 46. Chance of precipitation is 20%.
Mostly sunny, with a high near 50.
Partly cloudy, with a low around 37.
Sunny, with a high near 46.
Mostly clear, with a low around 36.
Sunny, with a high near 52.
Mostly clear, with a low around 41.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Monday
Nov 9
|
Sunny
|
63°F |
0 to 3 mph
SW
|
|
Monday Night
Nov 9
|
Clear
|
48°F |
2 to 6 mph
SW
|
|
Tuesday
Nov 10
|
Sunny
|
66°F |
5 mph
W
|
|
Tuesday Night
Nov 10
|
Mostly Clear
|
50°F |
1 mph
SW
|
|
Veterans Day
Nov 11
|
Partly Sunny then Chance Light Rain
|
63°F |
1 to 7 mph
SW
|
|
Wednesday Night
Nov 11
|
Slight Chance Light Rain then Mostly Cloudy
|
46°F |
7 to 14 mph
N
|
|
Thursday
Nov 12
|
Mostly Sunny
|
50°F |
14 to 18 mph
N
|
|
Thursday Night
Nov 12
|
Partly Cloudy
|
37°F |
8 to 13 mph
N
|
|
Friday
Nov 13
|
Sunny
|
46°F |
5 to 9 mph
N
|
|
Friday Night
Nov 13
|
Mostly Clear
|
36°F |
3 mph
NW
|
|
Saturday
Nov 14
|
Sunny
|
52°F |
6 mph
NW
|
|
Saturday Night
Nov 14
|
Mostly Clear
|
41°F |
3 mph
W
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Boulder.