South Beloit, IL Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for South Beloit, IL in one place.
Sunny, with a high near 81.
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: May 27, 2026 7:06 PM CDT.
The active forecast window currently covers May 30 to Jun 2, 2026 for South Beloit, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- May 30 to Jun 2, 2026
- Latest sync
- May 27, 2026 7:06 PM CDT
- Forecast office
- LOT
- Source
- NOAA / NWS
Daily Outlook
This Week in South Beloit
Sunday looks like the warmest upcoming period in South Beloit at 82 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 52 degrees F.
The strongest winds are forecast for Saturday at about 5 to 15 mph E.
Precipitation is mentioned in 2 upcoming forecast periods.
Forecast Details
- Last updated
- May 27, 2026 7:06 PM CDT
- Coverage
- 4 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 53.
Mostly sunny, with a high near 82.
Partly cloudy, with a low around 54.
A slight chance of rain showers after 1pm. Mostly sunny, with a high near 81.
A slight chance of rain showers before 7pm. Mostly clear, with a low around 53.
Sunny, with a high near 80.
Mostly clear, with a low around 52.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
May 30
|
Sunny
|
81°F |
5 to 15 mph
E
|
|
Saturday Night
May 30
|
Partly Cloudy
|
53°F |
5 to 15 mph
E
|
|
Sunday
May 31
|
Mostly Sunny
|
82°F |
5 mph
ESE
|
|
Sunday Night
May 31
|
Partly Cloudy
|
54°F |
0 to 5 mph
ENE
|
|
Monday
Jun 1
|
Mostly Sunny then Slight Chance Rain Showers
|
81°F |
0 to 10 mph
NE
|
|
Monday Night
Jun 1
|
Slight Chance Rain Showers then Mostly Clear
|
53°F |
0 to 10 mph
NE
|
|
Tuesday
Jun 2
|
Sunny
|
80°F |
0 to 10 mph
NE
|
|
Tuesday Night
Jun 2
|
Mostly Clear
|
52°F |
0 to 10 mph
ENE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around South Beloit.