South Beloit, IL Weather Forecast
Local 7-day forecast
Partly Cloudy
Track current conditions, temperature changes, wind, and the full daily outlook for South Beloit, IL in one place.
Partly cloudy, with a low around 74. South wind around 5 mph, with gusts as high as 15 mph. New rainfall amounts less than a tenth of an inch possible.
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: Jun 10, 2026 5:18 AM CDT.
The active forecast window currently covers Jun 10 to Jun 16, 2026 for South Beloit, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jun 10 to Jun 16, 2026
- Latest sync
- Jun 10, 2026 5:18 AM CDT
- Forecast office
- LOT
- Source
- NOAA / NWS
Daily Outlook
This Week in South Beloit
Wednesday looks like the warmest upcoming period in South Beloit at 86 degrees F.
Sunday Night is the coolest period ahead with temperatures near 52 degrees F.
The strongest winds are forecast for Thursday at about 5 to 20 mph S.
Precipitation is mentioned in 12 upcoming forecast periods.
Forecast Details
- Last updated
- Jun 10, 2026 5:18 AM CDT
- Coverage
- 7 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
Showers and thunderstorms likely after 1pm. Partly sunny. High near 86, with temperatures falling to around 80 in the afternoon. Heat index values as high as 95. South southwest wind 5 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
Showers and thunderstorms likely before 2am. Mostly cloudy, with a low around 68. South southwest wind 5 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New rainfall amounts between three quarters and one inch possible.
Showers and thunderstorms after 10am. Some of the storms could produce heavy rain. Partly sunny, with a high near 80. South wind 5 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 100%.
Showers and thunderstorms before 1am. Some of the storms could produce heavy rain. Mostly cloudy, with a low around 58. West southwest wind 5 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 100%.
Sunny, with a high near 77.
Mostly clear, with a low around 62.
A slight chance of rain showers after 1pm. Mostly sunny, with a high near 80.
A slight chance of rain showers before 7pm, then showers and thunderstorms likely. Mostly cloudy, with a low around 58.
A chance of rain showers before 1pm. Mostly sunny, with a high near 74.
A slight chance of rain showers after 7pm. Partly cloudy, with a low around 52.
A slight chance of rain showers. Partly sunny, with a high near 73.
A slight chance of rain showers before 7pm, then a slight chance of showers and thunderstorms. Partly cloudy, with a low around 53.
A slight chance of rain showers before 7am, then a chance of showers and thunderstorms. Mostly sunny, with a high near 75.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
Jun 10
|
Partly Cloudy
|
74°F |
5 mph
S
|
|
Wednesday
Jun 10
|
Partly Sunny then Showers And Thunderstorms Likely
|
86°F |
5 to 15 mph
SSW
|
|
Wednesday Night
Jun 10
|
Showers And Thunderstorms Likely
|
68°F |
5 to 15 mph
SSW
|
|
Thursday
Jun 11
|
Showers And Thunderstorms
|
80°F |
5 to 20 mph
S
|
|
Thursday Night
Jun 11
|
Showers And Thunderstorms
|
58°F |
5 to 20 mph
WSW
|
|
Friday
Jun 12
|
Sunny
|
77°F |
10 to 15 mph
W
|
|
Friday Night
Jun 12
|
Mostly Clear
|
62°F |
5 to 15 mph
SW
|
|
Saturday
Jun 13
|
Mostly Sunny then Slight Chance Rain Showers
|
80°F |
5 to 15 mph
SW
|
|
Saturday Night
Jun 13
|
Showers And Thunderstorms Likely
|
58°F |
5 to 15 mph
WNW
|
|
Sunday
Jun 14
|
Chance Rain Showers
|
74°F |
5 to 15 mph
NNW
|
|
Sunday Night
Jun 14
|
Slight Chance Rain Showers
|
52°F |
0 to 10 mph
NNW
|
|
Monday
Jun 15
|
Slight Chance Rain Showers
|
73°F |
0 to 10 mph
NNW
|
|
Monday Night
Jun 15
|
Slight Chance Showers And Thunderstorms
|
53°F |
0 to 5 mph
W
|
|
Tuesday
Jun 16
|
Slight Chance Rain Showers then Chance Showers And Thunderstorms
|
75°F |
0 to 10 mph
WSW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around South Beloit.