Greendale, IL Weather Forecast
Local 7-day forecast
Slight Chance Rain Showers then Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Greendale, IL in one place.
A slight chance of rain showers between 7am and 9am. Mostly sunny, with a high near 96. Heat index values as high as 100. South wind 1 to 5 mph. Chance of precipitation is 20%.
Local Weather Overview
This forecast page for Greendale, 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: Sep 15, 2026 5:17 PM CDT.
The active forecast window currently covers Sep 16 to Sep 21, 2026 for Greendale, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 16 to Sep 21, 2026
- Latest sync
- Sep 15, 2026 5:17 PM CDT
- Forecast office
- ILX
- Source
- NOAA / NWS
Daily Outlook
This Week in Greendale
Thursday looks like the warmest upcoming period in Greendale at 98 degrees F.
Monday Night is the coolest period ahead with temperatures near 62 degrees F.
The strongest winds are forecast for Saturday at about 5 to 9 mph SW.
Precipitation is mentioned in 6 upcoming forecast periods.
Forecast Details
- Last updated
- Sep 15, 2026 5:17 PM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- ILX
- Radar station
- KVWX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Partly cloudy, with a low around 73. South wind around 3 mph.
Sunny. High near 98, with temperatures falling to around 94 in the afternoon. West wind 2 to 6 mph.
Mostly clear, with a low around 71.
Sunny, with a high near 96.
Mostly clear, with a low around 71.
Mostly sunny, with a high near 97.
A slight chance of rain showers after 1am. Partly cloudy, with a low around 71. Chance of precipitation is 20%.
A slight chance of rain showers before 1pm, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 94. Chance of precipitation is 20%.
A chance of showers and thunderstorms. Partly cloudy, with a low around 67. Chance of precipitation is 30%.
A chance of showers and thunderstorms. Partly sunny, with a high near 86. Chance of precipitation is 40%.
A chance of rain showers before 1am. Mostly cloudy, with a low around 62. Chance of precipitation is 40%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Sep 16
|
Slight Chance Rain Showers then Mostly Sunny
|
96°F |
1 to 5 mph
S
|
|
Wednesday Night
Sep 16
|
Partly Cloudy
|
73°F |
3 mph
S
|
|
Thursday
Sep 17
|
Sunny
|
98°F |
2 to 6 mph
W
|
|
Thursday Night
Sep 17
|
Mostly Clear
|
71°F |
0 to 3 mph
NE
|
|
Friday
Sep 18
|
Sunny
|
96°F |
3 mph
SE
|
|
Friday Night
Sep 18
|
Mostly Clear
|
71°F |
3 mph
SE
|
|
Saturday
Sep 19
|
Mostly Sunny
|
97°F |
5 to 9 mph
SW
|
|
Saturday Night
Sep 19
|
Partly Cloudy then Slight Chance Rain Showers
|
71°F |
5 mph
SW
|
|
Sunday
Sep 20
|
Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
|
94°F |
3 to 9 mph
W
|
|
Sunday Night
Sep 20
|
Chance Showers And Thunderstorms
|
67°F |
3 to 8 mph
E
|
|
Monday
Sep 21
|
Chance Showers And Thunderstorms
|
86°F |
3 to 9 mph
NW
|
|
Monday Night
Sep 21
|
Chance Rain Showers
|
62°F |
3 to 9 mph
N
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Greendale.