South Jacksonville, IL Weather Forecast
Local 7-day forecast
Slight Chance Rain Showers
Track current conditions, temperature changes, wind, and the full daily outlook for South Jacksonville, IL in one place.
A slight chance of rain showers before 1pm. Cloudy, with a high near 71. East southeast wind around 6 mph.
Local Weather Overview
This forecast page for South Jacksonville, 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 30, 2026 12:23 AM CDT.
The active forecast window currently covers Oct 31 to Nov 5, 2026 for South Jacksonville, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 31 to Nov 5, 2026
- Latest sync
- Oct 30, 2026 12:23 AM CDT
- Forecast office
- ILX
- Source
- NOAA / NWS
Daily Outlook
This Week in South Jacksonville
Tuesday looks like the warmest upcoming period in South Jacksonville at 74 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 47 degrees F.
The strongest winds are forecast for Monday Night at about 15 to 18 mph SSE.
Precipitation is mentioned in 11 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 30, 2026 12:23 AM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- ILX
- Radar station
- KILX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A chance of rain showers after 1am. Cloudy, with a low around 52. East wind around 6 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
A chance of rain showers before noon. Mostly cloudy, with a high near 72. East southeast wind 3 to 7 mph. Chance of precipitation is 30%.
A slight chance of rain showers after midnight. Mostly cloudy, with a low around 54. Southeast wind around 7 mph. New rainfall amounts less than a tenth of an inch possible.
A chance of rain showers. Mostly cloudy, with a high near 71. Chance of precipitation is 50%.
Rain showers likely. Mostly cloudy, with a low around 58. Chance of precipitation is 60%.
Rain showers likely. Mostly cloudy, with a high near 74.
Rain showers likely. Mostly cloudy, with a low around 55.
Rain showers likely before noon, then a chance of showers and thunderstorms. Partly sunny, with a high near 70.
A chance of rain showers. Mostly cloudy, with a low around 47.
A chance of rain showers. Partly sunny, with a high near 63.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Oct 31
|
Slight Chance Rain Showers
|
71°F |
6 mph
ESE
|
|
Saturday Night
Oct 31
|
Cloudy then Chance Rain Showers
|
52°F |
6 mph
E
|
|
Sunday
Nov 1
|
Chance Rain Showers then Mostly Cloudy
|
72°F |
3 to 7 mph
ESE
|
|
Sunday Night
Nov 1
|
Mostly Cloudy then Slight Chance Rain Showers
|
54°F |
7 mph
SE
|
|
Monday
Nov 2
|
Chance Rain Showers
|
71°F |
7 to 15 mph
SE
|
|
Monday Night
Nov 2
|
Rain Showers Likely
|
58°F |
15 to 18 mph
SSE
|
|
Tuesday
Nov 3
|
Rain Showers Likely
|
74°F |
15 to 18 mph
SSE
|
|
Tuesday Night
Nov 3
|
Rain Showers Likely
|
55°F |
12 to 15 mph
SSE
|
|
Wednesday
Nov 4
|
Rain Showers Likely
|
70°F |
13 mph
SSW
|
|
Wednesday Night
Nov 4
|
Chance Rain Showers
|
47°F |
6 to 9 mph
WSW
|
|
Thursday
Nov 5
|
Chance Rain Showers
|
63°F |
8 mph
W
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around South Jacksonville.