Arlington Heights, IL Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Arlington Heights, IL in one place.
Sunny, with a high near 85. South southwest wind 5 to 10 mph.
Local Weather Overview
This forecast page for Arlington 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: May 24, 2026 11:36 AM CDT.
The active forecast window currently covers May 25 to May 30, 2026 for Arlington Heights, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- May 25 to May 30, 2026
- Latest sync
- May 24, 2026 11:36 AM CDT
- Forecast office
- LOT
- Source
- NOAA / NWS
Daily Outlook
This Week in Arlington Heights
Tuesday looks like the warmest upcoming period in Arlington Heights at 86 degrees F.
Friday Night is the coolest period ahead with temperatures near 56 degrees F.
The strongest winds are forecast for Thursday at about 5 to 15 mph NE.
Precipitation is mentioned in 1 upcoming forecast period.
Forecast Details
- Last updated
- May 24, 2026 11:36 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
Mostly clear, with a low around 64. South wind 5 to 10 mph.
Mostly sunny, with a high near 86. South southeast wind 5 to 10 mph.
Mostly cloudy, with a low around 66.
A slight chance of rain showers between 7am and 1pm. Partly sunny, with a high near 82.
Mostly cloudy, with a low around 60.
Mostly sunny, with a high near 79.
Partly cloudy, with a low around 57.
Mostly sunny, with a high near 75.
Partly cloudy, with a low around 56.
Mostly sunny, with a high near 75.
Mostly clear, with a low around 57.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Memorial Day
May 25
|
Sunny
|
85°F |
5 to 10 mph
SSW
|
|
Monday Night
May 25
|
Mostly Clear
|
64°F |
5 to 10 mph
S
|
|
Tuesday
May 26
|
Mostly Sunny
|
86°F |
5 to 10 mph
SSE
|
|
Tuesday Night
May 26
|
Mostly Cloudy
|
66°F |
0 to 10 mph
ESE
|
|
Wednesday
May 27
|
Slight Chance Rain Showers
|
82°F |
0 to 10 mph
ENE
|
|
Wednesday Night
May 27
|
Mostly Cloudy
|
60°F |
5 to 10 mph
NE
|
|
Thursday
May 28
|
Mostly Sunny
|
79°F |
5 to 15 mph
NE
|
|
Thursday Night
May 28
|
Partly Cloudy
|
57°F |
5 to 15 mph
NE
|
|
Friday
May 29
|
Mostly Sunny
|
75°F |
10 to 15 mph
NE
|
|
Friday Night
May 29
|
Partly Cloudy
|
56°F |
5 to 15 mph
ENE
|
|
Saturday
May 30
|
Mostly Sunny
|
75°F |
5 to 15 mph
NE
|
|
Saturday Night
May 30
|
Mostly Clear
|
57°F |
5 to 15 mph
NE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Arlington Heights.
