New Grand Chain, IL Weather Forecast
Local 7-day forecast
Chance Showers And Thunderstorms then Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for New Grand Chain, IL in one place.
A chance of showers and thunderstorms before 7am, then showers and thunderstorms. Partly sunny, with a high near 81. South southwest wind around 12 mph, with gusts as high as 21 mph. Chance of precipitation is 80%.
Local Weather Overview
This forecast page for New Grand Chain, 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 15, 2026 1:23 PM CDT.
The active forecast window currently covers Apr 16 to Apr 21, 2026 for New Grand Chain, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 16 to Apr 21, 2026
- Latest sync
- Apr 15, 2026 1:23 PM CDT
- Forecast office
- PAH
- Source
- NOAA / NWS
Daily Outlook
This Week in New Grand Chain
Friday looks like the warmest upcoming period in New Grand Chain at 87 degrees F.
Sunday Night is the coolest period ahead with temperatures near 41 degrees F.
The strongest winds are forecast for Saturday at about 14 mph WSW.
Precipitation is mentioned in 7 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 15, 2026 1:23 PM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- PAH
- Radar station
- KPAH
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Showers and thunderstorms likely before 7pm, then a slight chance of showers and thunderstorms between 7pm and 1am. Mostly clear, with a low around 61. South southwest wind 2 to 7 mph. Chance of precipitation is 70%.
A chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 87. South wind 3 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
A chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Partly cloudy, with a low around 63. South wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.
A chance of showers and thunderstorms before 7am, then a chance of showers and thunderstorms between 7am and 1pm, then showers and thunderstorms likely. Mostly cloudy, with a high near 75. West southwest wind around 14 mph, with gusts as high as 23 mph.
Showers and thunderstorms likely. Partly cloudy, with a low around 42. Northwest wind 7 to 10 mph, with gusts as high as 20 mph.
A slight chance of rain showers before 7am. Sunny, with a high near 65. Northwest wind 6 to 10 mph, with gusts as high as 18 mph.
Clear, with a low around 41. North northeast wind 2 to 6 mph.
Sunny, with a high near 71. South southeast wind 3 to 7 mph.
Partly cloudy, with a low around 48. South wind around 6 mph.
Sunny, with a high near 77. South southwest wind 6 to 10 mph, with gusts as high as 20 mph.
Mostly clear, with a low around 56. South southwest wind around 8 mph.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Thursday
Apr 16
|
Chance Showers And Thunderstorms then Showers And Thunderstorms
|
81°F |
12 mph
SSW
|
|
Thursday Night
Apr 16
|
Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms
|
61°F |
2 to 7 mph
SSW
|
|
Friday
Apr 17
|
Mostly Sunny then Chance Showers And Thunderstorms
|
87°F |
3 to 10 mph
S
|
|
Friday Night
Apr 17
|
Chance Showers And Thunderstorms
|
63°F |
10 mph
S
|
|
Saturday
Apr 18
|
Chance Showers And Thunderstorms
|
75°F |
14 mph
WSW
|
|
Saturday Night
Apr 18
|
Showers And Thunderstorms Likely
|
42°F |
7 to 10 mph
NW
|
|
Sunday
Apr 19
|
Slight Chance Rain Showers then Sunny
|
65°F |
6 to 10 mph
NW
|
|
Sunday Night
Apr 19
|
Clear
|
41°F |
2 to 6 mph
NNE
|
|
Monday
Apr 20
|
Sunny
|
71°F |
3 to 7 mph
SSE
|
|
Monday Night
Apr 20
|
Partly Cloudy
|
48°F |
6 mph
S
|
|
Tuesday
Apr 21
|
Sunny
|
77°F |
6 to 10 mph
SSW
|
|
Tuesday Night
Apr 21
|
Mostly Clear
|
56°F |
8 mph
SSW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around New Grand Chain.
Nearby forecast pages are not available for this location yet.