Plainville, IL Weather Forecast
Local 7-day forecast
Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Plainville, IL in one place.
Mostly sunny, with a high near 77. Southwest wind around 9 mph.
Local Weather Overview
This forecast page for Plainville, 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 21, 2026 10:16 PM CDT.
The active forecast window currently covers Apr 22 to Apr 28, 2026 for Plainville, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 22 to Apr 28, 2026
- Latest sync
- Apr 21, 2026 10:16 PM CDT
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in Plainville
Thursday looks like the warmest upcoming period in Plainville at 82 degrees F.
Monday Night is the coolest period ahead with temperatures near 50 degrees F.
The strongest winds are forecast for Thursday at about 7 to 16 mph S.
Precipitation is mentioned in 10 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 21, 2026 10:16 PM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- LSX
- Radar station
- KLSX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Mostly clear, with a low around 58. South wind around 7 mph.
Mostly sunny, with a high near 82. South wind 7 to 16 mph, with gusts as high as 28 mph.
A chance of showers and thunderstorms between 7pm and 1am, then showers and thunderstorms. Mostly cloudy, with a low around 61. South wind 9 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 80%.
Showers and thunderstorms before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 76. Chance of precipitation is 80%.
A chance of showers and thunderstorms. Partly cloudy, with a low around 51. Chance of precipitation is 30%.
A slight chance of rain showers before 7am. Mostly sunny, with a high near 74. Chance of precipitation is 20%.
A slight chance of rain showers after 7pm. Partly cloudy, with a low around 52. Chance of precipitation is 20%.
A slight chance of rain showers. Partly sunny, with a high near 76. Chance of precipitation is 20%.
A slight chance of rain showers before 7pm, then a chance of showers and thunderstorms between 7pm and 1am, then showers and thunderstorms likely. Mostly cloudy, with a low around 57. Chance of precipitation is 60%.
Showers and thunderstorms likely before 1pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 73. Chance of precipitation is 60%.
A chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 50. Chance of precipitation is 50%.
A slight chance of rain showers before 7am. Mostly sunny, with a high near 67. Chance of precipitation is 20%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Apr 22
|
Mostly Sunny
|
77°F |
9 mph
SW
|
|
Wednesday Night
Apr 22
|
Mostly Clear
|
58°F |
7 mph
S
|
|
Thursday
Apr 23
|
Mostly Sunny
|
82°F |
7 to 16 mph
S
|
|
Thursday Night
Apr 23
|
Chance Showers And Thunderstorms
|
61°F |
9 to 15 mph
S
|
|
Friday
Apr 24
|
Showers And Thunderstorms
|
76°F |
9 mph
W
|
|
Friday Night
Apr 24
|
Chance Showers And Thunderstorms
|
51°F |
7 mph
N
|
|
Saturday
Apr 25
|
Slight Chance Rain Showers then Mostly Sunny
|
74°F |
8 mph
NE
|
|
Saturday Night
Apr 25
|
Slight Chance Rain Showers
|
52°F |
6 mph
NE
|
|
Sunday
Apr 26
|
Slight Chance Rain Showers
|
76°F |
7 to 13 mph
E
|
|
Sunday Night
Apr 26
|
Chance Showers And Thunderstorms
|
57°F |
10 to 14 mph
SE
|
|
Monday
Apr 27
|
Showers And Thunderstorms Likely
|
73°F |
15 mph
S
|
|
Monday Night
Apr 27
|
Chance Showers And Thunderstorms
|
50°F |
12 mph
W
|
|
Tuesday
Apr 28
|
Slight Chance Rain Showers then Mostly Sunny
|
67°F |
10 mph
NW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Plainville.