Smithboro, IL Weather Forecast
Local 7-day forecast
Showers And Thunderstorms Likely
Track current conditions, temperature changes, wind, and the full daily outlook for Smithboro, IL in one place.
A chance of showers and thunderstorms before 7am, then a chance of showers and thunderstorms between 7am and 9am, then showers and thunderstorms likely. Partly sunny, with a high near 82. Southeast wind around 9 mph. Chance of precipitation is 70%.
Local Weather Overview
This forecast page for Smithboro, 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 14, 2026 8:40 AM CDT.
The active forecast window currently covers Oct 15 to Oct 20, 2026 for Smithboro, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 15 to Oct 20, 2026
- Latest sync
- Oct 14, 2026 8:40 AM CDT
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in Smithboro
Thursday looks like the warmest upcoming period in Smithboro at 82 degrees F.
Saturday Night is the coolest period ahead with temperatures near 37 degrees F.
The strongest winds are forecast for Friday at about 18 to 23 mph NW.
Precipitation is mentioned in 3 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 14, 2026 8:40 AM CDT
- Coverage
- 6 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
Showers and thunderstorms likely. Mostly cloudy. Low around 48, with temperatures rising to around 52 overnight. West wind 6 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 80%.
A chance of rain showers before 7am. Partly sunny, with a high near 60. Northwest wind 18 to 23 mph, with gusts as high as 31 mph. Chance of precipitation is 40%.
Mostly clear, with a low around 38.
Sunny, with a high near 63.
Clear, with a low around 37.
Sunny, with a high near 70.
Partly cloudy, with a low around 43.
Mostly sunny, with a high near 71.
Mostly cloudy, with a low around 47.
Mostly sunny, with a high near 77.
Partly cloudy, with a low around 51.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Thursday
Oct 15
|
Showers And Thunderstorms Likely
|
82°F |
9 mph
SE
|
|
Thursday Night
Oct 15
|
Showers And Thunderstorms Likely
|
48°F |
6 to 18 mph
W
|
|
Friday
Oct 16
|
Chance Rain Showers then Partly Sunny
|
60°F |
18 to 23 mph
NW
|
|
Friday Night
Oct 16
|
Mostly Clear
|
38°F |
3 to 16 mph
N
|
|
Saturday
Oct 17
|
Sunny
|
63°F |
0 to 3 mph
NE
|
|
Saturday Night
Oct 17
|
Clear
|
37°F |
2 mph
SE
|
|
Sunday
Oct 18
|
Sunny
|
70°F |
2 to 8 mph
S
|
|
Sunday Night
Oct 18
|
Partly Cloudy
|
43°F |
2 to 6 mph
S
|
|
Monday
Oct 19
|
Mostly Sunny
|
71°F |
2 to 6 mph
S
|
|
Monday Night
Oct 19
|
Mostly Cloudy
|
47°F |
0 to 3 mph
SE
|
|
Tuesday
Oct 20
|
Mostly Sunny
|
77°F |
0 to 5 mph
SE
|
|
Tuesday Night
Oct 20
|
Partly Cloudy
|
51°F |
2 mph
SE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Smithboro.