Brookside, IL Weather Forecast
Local 7-day forecast
Patchy Fog then Mostly Cloudy
Track current conditions, temperature changes, wind, and the full daily outlook for Brookside, IL in one place.
Patchy fog and showers and thunderstorms before noon. Some of the storms could produce heavy rain. Mostly cloudy. High near 76, with temperatures falling to around 74 in the afternoon. North northeast wind 0 to 5 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Local Weather Overview
This forecast page for Brookside, 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 17, 2026 9:05 AM CDT.
The active forecast window currently covers Sep 17 to Sep 23, 2026 for Brookside, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 17 to Sep 23, 2026
- Latest sync
- Sep 17, 2026 9:05 AM CDT
- Forecast office
- LOT
- Source
- NOAA / NWS
Daily Outlook
This Week in Brookside
Saturday looks like the warmest upcoming period in Brookside at 80 degrees F.
Monday Night is the coolest period ahead with temperatures near 53 degrees F.
The strongest winds are forecast for Sunday at about 10 to 15 mph NE.
Precipitation is mentioned in 10 upcoming forecast periods.
Forecast Details
- Last updated
- Sep 17, 2026 9:05 AM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- LOT
- Radar station
- KLOT
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Mostly cloudy, with a low around 62. Northeast wind 5 to 10 mph.
A slight chance of rain showers between 1pm and 4pm. Mostly cloudy. High near 74, with temperatures falling to around 71 in the afternoon. East northeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
A slight chance of rain showers between 7pm and 10pm, then a slight chance of showers and thunderstorms between 10pm and 1am, then showers and thunderstorms likely. Mostly cloudy, with a low around 63. East southeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.
Showers and thunderstorms. Mostly cloudy, with a high near 80. South wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%.
Showers and thunderstorms. Mostly cloudy, with a low around 63. Chance of precipitation is 80%.
Showers and thunderstorms likely. Mostly cloudy, with a high near 69.
A chance of rain showers before 1am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 56.
Showers and thunderstorms likely. Mostly cloudy, with a high near 64.
A chance of rain showers. Mostly cloudy, with a low around 53.
A slight chance of rain showers before 1pm. Partly sunny, with a high near 66.
Mostly cloudy, with a low around 54.
Mostly sunny, with a high near 71.
Partly cloudy, with a low around 55.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Today
Sep 17
|
Patchy Fog then Mostly Cloudy
|
76°F |
0 to 5 mph
NNE
|
|
Tonight
Sep 17
|
Mostly Cloudy
|
62°F |
5 to 10 mph
NE
|
|
Friday
Sep 18
|
Mostly Cloudy then Slight Chance Rain Showers
|
74°F |
5 to 10 mph
ENE
|
|
Friday Night
Sep 18
|
Slight Chance Showers And Thunderstorms
|
63°F |
10 mph
ESE
|
|
Saturday
Sep 19
|
Showers And Thunderstorms
|
80°F |
10 mph
S
|
|
Saturday Night
Sep 19
|
Showers And Thunderstorms
|
63°F |
5 to 10 mph
ENE
|
|
Sunday
Sep 20
|
Showers And Thunderstorms Likely
|
69°F |
10 to 15 mph
NE
|
|
Sunday Night
Sep 20
|
Chance Rain Showers
|
56°F |
15 mph
ENE
|
|
Monday
Sep 21
|
Showers And Thunderstorms Likely
|
64°F |
15 mph
ENE
|
|
Monday Night
Sep 21
|
Chance Rain Showers
|
53°F |
10 to 15 mph
ENE
|
|
Tuesday
Sep 22
|
Slight Chance Rain Showers
|
66°F |
10 to 15 mph
ENE
|
|
Tuesday Night
Sep 22
|
Mostly Cloudy
|
54°F |
5 to 10 mph
NNE
|
|
Wednesday
Sep 23
|
Mostly Sunny
|
71°F |
5 to 10 mph
NE
|
|
Wednesday Night
Sep 23
|
Partly Cloudy
|
55°F |
5 mph
NE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Brookside.