New Berlin, IL Weather Forecast
Local 7-day forecast
Mostly Sunny then Slight Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for New Berlin, IL in one place.
A slight chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 92. Heat index values as high as 106. South southwest wind 2 to 7 mph. Chance of precipitation is 20%.
Local Weather Overview
This forecast page for New Berlin, 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: Jul 25, 2026 2:58 PM CDT.
The active forecast window currently covers Jul 26 to Jul 31, 2026 for New Berlin, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 26 to Jul 31, 2026
- Latest sync
- Jul 25, 2026 2:58 PM CDT
- Forecast office
- ILX
- Source
- NOAA / NWS
Daily Outlook
This Week in New Berlin
Monday looks like the warmest upcoming period in New Berlin at 97 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 67 degrees F.
The strongest winds are forecast for Monday at about 8 to 13 mph SSW.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 25, 2026 2:58 PM 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 slight chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 75. Heat index values as high as 105. South southwest wind around 7 mph.
Sunny, with a high near 97. South southwest wind 8 to 13 mph, with gusts as high as 22 mph.
Mostly clear, with a low around 75. West wind 6 to 12 mph, with gusts as high as 18 mph.
Mostly sunny, with a high near 91. North northwest wind around 9 mph.
Partly cloudy, with a low around 67.
Sunny, with a high near 90.
Mostly clear, with a low around 67.
Sunny, with a high near 89.
A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 69.
A slight chance of showers and thunderstorms before 7am, then a chance of showers and thunderstorms between 7am and 1pm, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 89.
A slight chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 68.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Sunday
Jul 26
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
92°F |
2 to 7 mph
SSW
|
|
Sunday Night
Jul 26
|
Slight Chance Showers And Thunderstorms then Partly Cloudy
|
75°F |
7 mph
SSW
|
|
Monday
Jul 27
|
Sunny
|
97°F |
8 to 13 mph
SSW
|
|
Monday Night
Jul 27
|
Mostly Clear
|
75°F |
6 to 12 mph
W
|
|
Tuesday
Jul 28
|
Mostly Sunny
|
91°F |
9 mph
NNW
|
|
Tuesday Night
Jul 28
|
Partly Cloudy
|
67°F |
3 to 7 mph
NE
|
|
Wednesday
Jul 29
|
Sunny
|
90°F |
6 mph
NE
|
|
Wednesday Night
Jul 29
|
Mostly Clear
|
67°F |
5 mph
E
|
|
Thursday
Jul 30
|
Sunny
|
89°F |
5 mph
SE
|
|
Thursday Night
Jul 30
|
Partly Cloudy then Slight Chance Showers And Thunderstorms
|
69°F |
3 mph
ESE
|
|
Friday
Jul 31
|
Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms
|
89°F |
3 to 7 mph
SE
|
|
Friday Night
Jul 31
|
Slight Chance Showers And Thunderstorms
|
68°F |
6 mph
SSE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around New Berlin.