Illinois · NWS LOT office
Arlington Heights, IL weather
It is 54°F and mostly cloudy at Chicago / Wheeling, Pal-Waukee Airport as of Oct 28, 4:05 AM CDT. Overnight: Mostly Clear, low near 53°F, 1% chance of precipitation. Forecast from the National Weather Service, issued Oct 28, 3:35 AM CDT.
Current conditions
Temperature
54°F
Mostly Cloudy
Wind
Calm
Humidity 88% · dew point 50°F
Pressure · visibility
30.21 inHg
Visibility 10 mi
Observed at Chicago / Wheeling, Pal-Waukee Airport (KPWK), Oct 28, 4:05 AM CDT. Station readings can lag or be missing.
Alerts for this area
No active NWS alerts cover the Arlington Heights forecast zone right now.
Around the NWS LOT forecast area
No active alerts in zones served by the LOT office near Arlington Heights.
From the alert snapshot of Oct 28, 2026, 5:12 AM EDT. No alerts are active anywhere in Illinois.
For official warnings, check weather.gov and your local authorities. OpenForecast repeats National Weather Service alerts and may be delayed or incomplete. Follow instructions from emergency officials.
Next 24 hours
| Time | Temp | Forecast | Precip. chance | Wind |
|---|---|---|---|---|
| Wed 4 AM | 54°F | Partly Cloudy | 1% | SSW 5 mph |
| Wed 5 AM | 53°F | Mostly Clear | 1% | SSW 5 mph |
| Wed 6 AM | 53°F | Sunny | 1% | 0 mph |
| Wed 7 AM | 53°F | Sunny | 0% | SSW 5 mph |
| Wed 8 AM | 54°F | Sunny | 0% | SSW 5 mph |
| Wed 9 AM | 58°F | Sunny | 0% | SSW 5 mph |
| Wed 10 AM | 62°F | Sunny | 0% | SSW 5 mph |
| Wed 11 AM | 66°F | Sunny | 0% | SSW 10 mph |
| Wed 12 PM | 69°F | Sunny | 0% | SSW 10 mph |
| Wed 1 PM | 71°F | Sunny | 0% | SSW 10 mph |
| Wed 2 PM | 73°F | Sunny | 0% | SSW 10 mph |
| Wed 3 PM | 74°F | Sunny | 0% | SSW 15 mph |
| Wed 4 PM | 73°F | Sunny | 0% | SSW 10 mph |
| Wed 5 PM | 72°F | Sunny | 1% | S 10 mph |
| Wed 6 PM | 69°F | Partly Cloudy | 1% | S 10 mph |
| Wed 7 PM | 67°F | Mostly Clear | 3% | S 10 mph |
| Wed 8 PM | 65°F | Mostly Clear | 3% | S 10 mph |
| Wed 9 PM | 64°F | Mostly Clear | 2% | S 10 mph |
| Wed 10 PM | 63°F | Mostly Clear | 2% | S 10 mph |
| Wed 11 PM | 63°F | Mostly Clear | 3% | SSW 15 mph |
| Thu 12 AM | 62°F | Partly Cloudy | 3% | SSW 15 mph |
| Thu 1 AM | 62°F | Mostly Cloudy | 8% | SSW 15 mph |
| Thu 2 AM | 62°F | Mostly Cloudy | 9% | SSW 15 mph |
| Thu 3 AM | 62°F | Mostly Cloudy | 12% | SSW 15 mph |
Hourly values come from the NWS gridded forecast for the 2.5 km grid square that covers the city's center point. Conditions elsewhere in Arlington Heights can differ.
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7-day forecast
Overnight
Low 53°F
Mostly clear, with a low around 53. South southwest wind around 5 mph.
Wednesday
High 74°F·Low 59°F
Sunny. High near 74, with temperatures falling to around 72 in the afternoon. South southwest wind 0 to 15 mph.
Wednesday Night: A slight chance of rain showers after 4am. Partly cloudy, with a low around 59. South southwest wind 10 to 15 mph. Chance of precipitation is 20%.
Thursday
High 70°F·Low 45°F
A slight chance of rain showers before 10am. Partly sunny, with a high near 70. West wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Thursday Night: Mostly clear, with a low around 45. North wind around 5 mph, with gusts as high as 10 mph.
Friday
High 62°F·Low 50°F
Partly sunny, with a high near 62.
Friday Night: A chance of rain showers after 7pm. Cloudy, with a low around 50.
Saturday
High 62°F·Low 50°F
A chance of rain showers. Cloudy, with a high near 62.
Saturday Night: A chance of rain showers. Cloudy, with a low around 50.
Sunday
High 66°F·Low 52°F
A chance of rain showers. Mostly cloudy, with a high near 66.
Sunday Night: A chance of rain showers. Mostly cloudy, with a low around 52.
Monday
High 66°F·Low 53°F
A chance of rain showers. Mostly cloudy, with a high near 66.
Monday Night: A chance of rain showers. Mostly cloudy, with a low around 53.
Tuesday
High 66°F
Rain showers likely. Mostly cloudy, with a high near 66.
Nearby cities
- Rolling Meadows, IL 3 mi
- Mount Prospect, IL 3 mi
- Palatine, IL 3 mi
- Wheeling, IL 4 mi
- Buffalo Grove, IL 5 mi
- Des Plaines, IL 6 mi
- Elk Grove Village, IL 6 mi
- Schaumburg, IL 7 mi
Larger cities in the area
- Chicago, IL 24 mi · pop. 2,721,308
- Naperville, IL 26 mi · pop. 153,124
- Aurora, IL 28 mi · pop. 180,710
- Milwaukee, WI 67 mi · pop. 563,531
Other cities in Cook County
- Chicago
- Cicero
- Schaumburg
- Evanston
- Palatine
- Skokie
- Des Plaines
- Orland Park
- Oak Lawn
- Mount Prospect
- Berwyn
- Tinley Park
See every city we cover in Illinois, or check all active alerts.
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About this forecast
- Forecast office
- Arlington Heights is served by the National Weather Service LOT forecast office, forecast zone ILZ103, county zone ILC031.
- Location used
- The Census Bureau's internal point for Arlington Heights (42.0974, -87.9817), in Cook County. Population: 75,596 (2024 estimate), number 15 of the 121 Illinois cities on this site.
- Radar
- Nearest NWS radar: KLOT. View it on radar.weather.gov.
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Sources
- Forecast, hourly forecast, observations and alerts: National Weather Service API, api.weather.gov/points/42.0974,-87.9817 (forecast issued Oct 28, 3:35 AM CDT).
- Official forecast page: forecast.weather.gov.
- City location and population: U.S. Census Bureau, Vintage 2024 population estimates and 2024 Gazetteer files.
- Snapshot taken Oct 28, 2026. The NWS and Census Bureau do not endorse OpenForecast.
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