Prospect Heights, IL Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Prospect Heights, IL in one place.
Sunny, with a high near 83. West wind 10 to 15 mph, with gusts as high as 25 mph.
Local Weather Overview
This forecast page for Prospect Heights, 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: Oct 12, 2026 3:12 AM CDT.
The active forecast window currently covers Oct 13 to Oct 18, 2026 for Prospect Heights, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 13 to Oct 18, 2026
- Latest sync
- Oct 12, 2026 3:12 AM CDT
- Forecast office
- LOT
- Source
- NOAA / NWS
Daily Outlook
This Week in Prospect Heights
Tuesday looks like the warmest upcoming period in Prospect Heights at 83 degrees F.
Friday Night is the coolest period ahead with temperatures near 38 degrees F.
The strongest winds are forecast for Friday at about 15 to 20 mph NW.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 12, 2026 3:12 AM CDT
- Coverage
- 6 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
Rain showers likely after 7pm. Partly cloudy, with a low around 60. North wind around 5 mph. Chance of precipitation is 70%.
Rain showers likely before 1pm. Mostly cloudy, with a high near 69. Chance of precipitation is 70%.
Mostly cloudy, with a low around 54.
Rain showers likely after 7am. Mostly cloudy, with a high near 66.
Rain showers likely. Mostly cloudy, with a low around 50.
A slight chance of rain showers before 7am. Mostly cloudy, with a high near 59.
Mostly cloudy, with a low around 38.
Mostly sunny, with a high near 54.
Mostly clear, with a low around 38.
Sunny, with a high near 60.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
Oct 13
|
Sunny
|
83°F |
10 to 15 mph
W
|
|
Tuesday Night
Oct 13
|
Rain Showers Likely
|
60°F |
5 mph
N
|
|
Wednesday
Oct 14
|
Rain Showers Likely
|
69°F |
5 to 10 mph
NNE
|
|
Wednesday Night
Oct 14
|
Mostly Cloudy
|
54°F |
5 to 10 mph
NE
|
|
Thursday
Oct 15
|
Rain Showers Likely
|
66°F |
10 mph
E
|
|
Thursday Night
Oct 15
|
Rain Showers Likely
|
50°F |
5 to 15 mph
NNE
|
|
Friday
Oct 16
|
Slight Chance Rain Showers then Mostly Cloudy
|
59°F |
15 to 20 mph
NW
|
|
Friday Night
Oct 16
|
Mostly Cloudy
|
38°F |
10 to 20 mph
NW
|
|
Saturday
Oct 17
|
Mostly Sunny
|
54°F |
5 to 10 mph
NW
|
|
Saturday Night
Oct 17
|
Mostly Clear
|
38°F |
5 mph
W
|
|
Sunday
Oct 18
|
Sunny
|
60°F |
5 to 15 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Prospect Heights.