Smithboro, IL Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Smithboro, IL in one place.
Sunny, with a high near 78. South wind 6 to 20 mph.
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: Apr 21, 2026 10:23 PM CDT.
The active forecast window currently covers Apr 23 to Apr 28, 2026 for Smithboro, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 23 to Apr 28, 2026
- Latest sync
- Apr 21, 2026 10:23 PM CDT
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in Smithboro
Thursday looks like the warmest upcoming period in Smithboro at 78 degrees F.
Saturday Night is the coolest period ahead with temperatures near 52 degrees F.
The strongest winds are forecast for Thursday at about 6 to 20 mph S.
Precipitation is mentioned in 8 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 21, 2026 10:23 PM 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
A chance of showers and thunderstorms between 1am and 4am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 62. South wind 12 to 15 mph. Chance of precipitation is 50%.
Showers and thunderstorms. Mostly cloudy, with a high near 76. Chance of precipitation is 80%.
Showers and thunderstorms likely before 7pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 55. Chance of precipitation is 70%.
A chance of rain showers before 1pm. Mostly sunny, with a high near 74. Chance of precipitation is 30%.
Partly cloudy, with a low around 52.
Mostly sunny, with a high near 75.
A slight chance of showers and thunderstorms between 7pm and 1am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 58. Chance of precipitation is 50%.
Showers and thunderstorms likely. Partly sunny, with a high near 75. Chance of precipitation is 60%.
Showers and thunderstorms likely. Partly cloudy, with a low around 53. Chance of precipitation is 60%.
A slight chance of rain showers before 7am. Mostly sunny, with a high near 69. Chance of precipitation is 20%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Thursday
Apr 23
|
Sunny
|
78°F |
6 to 20 mph
S
|
|
Thursday Night
Apr 23
|
Mostly Cloudy then Chance Showers And Thunderstorms
|
62°F |
12 to 15 mph
S
|
|
Friday
Apr 24
|
Showers And Thunderstorms
|
76°F |
9 to 13 mph
SW
|
|
Friday Night
Apr 24
|
Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
|
55°F |
2 to 7 mph
NW
|
|
Saturday
Apr 25
|
Chance Rain Showers
|
74°F |
8 mph
N
|
|
Saturday Night
Apr 25
|
Partly Cloudy
|
52°F |
6 mph
NE
|
|
Sunday
Apr 26
|
Mostly Sunny
|
75°F |
6 to 10 mph
E
|
|
Sunday Night
Apr 26
|
Slight Chance Showers And Thunderstorms
|
58°F |
8 to 14 mph
E
|
|
Monday
Apr 27
|
Showers And Thunderstorms Likely
|
75°F |
16 mph
S
|
|
Monday Night
Apr 27
|
Showers And Thunderstorms Likely
|
53°F |
9 to 15 mph
SW
|
|
Tuesday
Apr 28
|
Slight Chance Rain Showers then Mostly Sunny
|
69°F |
9 to 13 mph
W
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Smithboro.