Chapin, IL Weather Forecast
Local 7-day forecast
Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Chapin, IL in one place.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. South southwest wind around 9 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
Local Weather Overview
This forecast page for Chapin, 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 9, 2026 2:11 AM CDT.
The active forecast window currently covers Jun 9 to Jun 15, 2026 for Chapin, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jun 9 to Jun 15, 2026
- Latest sync
- Jun 9, 2026 2:11 AM CDT
- Forecast office
- ILX
- Source
- NOAA / NWS
Daily Outlook
This Week in Chapin
Wednesday looks like the warmest upcoming period in Chapin at 91 degrees F.
Sunday Night is the coolest period ahead with temperatures near 60 degrees F.
The strongest winds are forecast for Thursday at about 14 to 23 mph SSW.
Precipitation is mentioned in 12 upcoming forecast periods.
Forecast Details
- Last updated
- Jun 9, 2026 2:11 AM CDT
- Coverage
- 7 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 slight chance of rain showers before 10am, then a slight chance of showers and thunderstorms. Partly sunny, with a high near 88. Southwest wind 8 to 13 mph, with gusts as high as 17 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
A chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 72. South southwest wind 7 to 12 mph, with gusts as high as 16 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
Sunny, with a high near 91. South southwest wind 12 to 20 mph, with gusts as high as 28 mph.
Showers and thunderstorms likely after 7pm. Partly cloudy, with a low around 72. South southwest wind 15 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
Rain showers likely before 10am, then a slight chance of showers and thunderstorms between 10am and 1pm, then showers and thunderstorms likely. Mostly sunny, with a high near 89. South southwest wind 14 to 23 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Showers and thunderstorms before 1am, then a slight chance of showers and thunderstorms. Partly cloudy, with a low around 65. West southwest wind 10 to 21 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
A slight chance of showers and thunderstorms before 7am. Mostly sunny, with a high near 83.
Mostly clear, with a low around 62.
A slight chance of showers and thunderstorms after 7am. Sunny, with a high near 86.
A chance of showers and thunderstorms. Partly cloudy, with a low around 63.
A chance of showers and thunderstorms before 7am, then a chance of showers and thunderstorms between 7am and 1pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 81.
A chance of showers and thunderstorms. Partly cloudy, with a low around 60.
A chance of rain showers before 1pm, then a slight chance of showers and thunderstorms. Partly sunny, with a high near 78.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
Jun 9
|
Chance Showers And Thunderstorms
|
68°F |
9 mph
SSW
|
|
Tuesday
Jun 9
|
Slight Chance Showers And Thunderstorms
|
88°F |
8 to 13 mph
SW
|
|
Tuesday Night
Jun 9
|
Chance Showers And Thunderstorms
|
72°F |
7 to 12 mph
SSW
|
|
Wednesday
Jun 10
|
Sunny
|
91°F |
12 to 20 mph
SSW
|
|
Wednesday Night
Jun 10
|
Showers And Thunderstorms Likely
|
72°F |
15 to 18 mph
SSW
|
|
Thursday
Jun 11
|
Slight Chance Showers And Thunderstorms
|
89°F |
14 to 23 mph
SSW
|
|
Thursday Night
Jun 11
|
Showers And Thunderstorms
|
65°F |
10 to 21 mph
WSW
|
|
Friday
Jun 12
|
Slight Chance Showers And Thunderstorms then Mostly Sunny
|
83°F |
9 to 13 mph
WNW
|
|
Friday Night
Jun 12
|
Mostly Clear
|
62°F |
5 to 10 mph
WSW
|
|
Saturday
Jun 13
|
Slight Chance Showers And Thunderstorms
|
86°F |
7 to 14 mph
SW
|
|
Saturday Night
Jun 13
|
Chance Showers And Thunderstorms
|
63°F |
7 to 10 mph
W
|
|
Sunday
Jun 14
|
Chance Showers And Thunderstorms
|
81°F |
9 to 14 mph
NNW
|
|
Sunday Night
Jun 14
|
Chance Showers And Thunderstorms
|
60°F |
8 to 13 mph
N
|
|
Monday
Jun 15
|
Chance Rain Showers then Slight Chance Showers And Thunderstorms
|
78°F |
9 to 14 mph
ESE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Chapin.