South Beloit, IL Weather Forecast
Local 7-day forecast
Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for South Beloit, IL in one place.
Mostly sunny, with a high near 88. Northwest wind around 10 mph, with gusts as high as 20 mph.
Local Weather Overview
This forecast page for South Beloit, 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: Jul 17, 2026 3:29 AM CDT.
The active forecast window currently covers Jul 18 to Jul 23, 2026 for South Beloit, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 18 to Jul 23, 2026
- Latest sync
- Jul 17, 2026 3:29 AM CDT
- Forecast office
- LOT
- Source
- NOAA / NWS
Daily Outlook
This Week in South Beloit
Saturday looks like the warmest upcoming period in South Beloit at 88 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 56 degrees F.
The strongest winds are forecast for Tuesday at about 10 to 20 mph NW.
Precipitation is mentioned in 3 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 17, 2026 3:29 AM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- LOT
- Radar station
- KMKX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Partly cloudy, with a low around 62. Northeast wind 0 to 10 mph, with gusts as high as 20 mph.
Sunny, with a high near 84.
Partly cloudy, with a low around 64.
A slight chance of rain showers between 7am and 1pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 87.
A chance of showers and thunderstorms. Partly cloudy, with a low around 68.
A slight chance of showers and thunderstorms before 7am. Mostly sunny, with a high near 82.
Mostly clear, with a low around 58.
Sunny, with a high near 78.
Mostly clear, with a low around 56.
Sunny, with a high near 80.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Jul 18
|
Mostly Sunny
|
88°F |
10 mph
NW
|
|
Saturday Night
Jul 18
|
Partly Cloudy
|
62°F |
0 to 10 mph
NE
|
|
Sunday
Jul 19
|
Sunny
|
84°F |
0 to 5 mph
E
|
|
Sunday Night
Jul 19
|
Partly Cloudy
|
64°F |
0 to 5 mph
SSE
|
|
Monday
Jul 20
|
Slight Chance Rain Showers then Chance Showers And Thunderstorms
|
87°F |
5 to 15 mph
SSW
|
|
Monday Night
Jul 20
|
Chance Showers And Thunderstorms
|
68°F |
10 to 15 mph
WSW
|
|
Tuesday
Jul 21
|
Slight Chance Showers And Thunderstorms then Mostly Sunny
|
82°F |
10 to 20 mph
NW
|
|
Tuesday Night
Jul 21
|
Mostly Clear
|
58°F |
5 to 15 mph
NNW
|
|
Wednesday
Jul 22
|
Sunny
|
78°F |
5 to 10 mph
NNW
|
|
Wednesday Night
Jul 22
|
Mostly Clear
|
56°F |
0 to 10 mph
WNW
|
|
Thursday
Jul 23
|
Sunny
|
80°F |
0 to 5 mph
WSW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around South Beloit.