Johnsonville, IL Weather Forecast
Local 7-day forecast
Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Johnsonville, IL in one place.
Showers and thunderstorms. Mostly cloudy, with a high near 65. West wind 13 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 90%.
Local Weather Overview
This forecast page for Johnsonville, 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 16, 2026 8:21 PM CDT.
The active forecast window currently covers Apr 18 to Apr 23, 2026 for Johnsonville, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 18 to Apr 23, 2026
- Latest sync
- Apr 16, 2026 8:21 PM CDT
- Forecast office
- PAH
- Source
- NOAA / NWS
Daily Outlook
This Week in Johnsonville
Thursday looks like the warmest upcoming period in Johnsonville at 77 degrees F.
Saturday Night is the coolest period ahead with temperatures near 38 degrees F.
The strongest winds are forecast for Saturday at about 13 to 16 mph W.
Precipitation is mentioned in 3 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 16, 2026 8:21 PM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- PAH
- Radar station
- KVWX
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 before 1am. Mostly clear, with a low around 38. West northwest wind 6 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 50%.
Sunny, with a high near 63. West northwest wind 6 to 14 mph, with gusts as high as 21 mph.
Mostly clear, with a low around 39. North northeast wind 3 to 8 mph.
Sunny, with a high near 69. Southeast wind around 7 mph.
Clear, with a low around 50. South wind around 8 mph.
Sunny, with a high near 76. Southwest wind 8 to 14 mph, with gusts as high as 22 mph.
Partly cloudy, with a low around 55. Southwest wind around 9 mph, with gusts as high as 18 mph.
Mostly sunny, with a high near 76. Southwest wind 6 to 10 mph.
Mostly clear, with a low around 55. South southwest wind around 7 mph.
A slight chance of rain showers between 7am and 1pm, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 77. South southeast wind 6 to 10 mph.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Apr 18
|
Showers And Thunderstorms
|
65°F |
13 to 16 mph
W
|
|
Saturday Night
Apr 18
|
Chance Rain Showers
|
38°F |
6 to 13 mph
WNW
|
|
Sunday
Apr 19
|
Sunny
|
63°F |
6 to 14 mph
WNW
|
|
Sunday Night
Apr 19
|
Mostly Clear
|
39°F |
3 to 8 mph
NNE
|
|
Monday
Apr 20
|
Sunny
|
69°F |
7 mph
SE
|
|
Monday Night
Apr 20
|
Clear
|
50°F |
8 mph
S
|
|
Tuesday
Apr 21
|
Sunny
|
76°F |
8 to 14 mph
SW
|
|
Tuesday Night
Apr 21
|
Partly Cloudy
|
55°F |
9 mph
SW
|
|
Wednesday
Apr 22
|
Mostly Sunny
|
76°F |
6 to 10 mph
SW
|
|
Wednesday Night
Apr 22
|
Mostly Clear
|
55°F |
7 mph
SSW
|
|
Thursday
Apr 23
|
Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
|
77°F |
6 to 10 mph
SSE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Johnsonville.