Harwood Heights, IL Weather Forecast
Local 7-day forecast
Slight Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Harwood Heights, IL in one place.
A slight chance of showers and thunderstorms between 11am and 2pm. Mostly sunny. High near 90, with temperatures falling to around 83 in the afternoon. Heat index values as high as 99. Northwest wind 10 to 15 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
Local Weather Overview
This forecast page for Harwood 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: Jul 17, 2026 10:04 AM CDT.
The active forecast window currently covers Jul 18 to Jul 23, 2026 for Harwood Heights, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 18 to Jul 23, 2026
- Latest sync
- Jul 17, 2026 10:04 AM CDT
- Forecast office
- LOT
- Source
- NOAA / NWS
Daily Outlook
This Week in Harwood Heights
Saturday looks like the warmest upcoming period in Harwood Heights at 90 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 63 degrees F.
The strongest winds are forecast for Saturday at about 10 to 15 mph NW.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 17, 2026 10:04 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
Partly cloudy, with a low around 68. North northeast wind 5 to 10 mph, with gusts as high as 20 mph.
Sunny, with a high near 84. Northeast wind 5 to 10 mph.
Partly cloudy, with a low around 68.
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 87.
A slight chance of showers and thunderstorms before 7pm, then showers and thunderstorms likely between 7pm and 1am, then a chance of showers and thunderstorms. Partly cloudy, with a low around 73.
A chance of showers and thunderstorms before 7am. Mostly sunny, with a high near 86.
Partly cloudy, with a low around 65.
Sunny, with a high near 79.
Mostly clear, with a low around 63.
Sunny, with a high near 81.
Partly cloudy, with a low around 65.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Jul 18
|
Slight Chance Showers And Thunderstorms
|
90°F |
10 to 15 mph
NW
|
|
Saturday Night
Jul 18
|
Partly Cloudy
|
68°F |
5 to 10 mph
NNE
|
|
Sunday
Jul 19
|
Sunny
|
84°F |
5 to 10 mph
NE
|
|
Sunday Night
Jul 19
|
Partly Cloudy
|
68°F |
5 mph
SE
|
|
Monday
Jul 20
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
87°F |
5 to 15 mph
SSW
|
|
Monday Night
Jul 20
|
Slight Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
|
73°F |
10 to 15 mph
WSW
|
|
Tuesday
Jul 21
|
Chance Showers And Thunderstorms then Mostly Sunny
|
86°F |
10 to 15 mph
WNW
|
|
Tuesday Night
Jul 21
|
Partly Cloudy
|
65°F |
10 to 15 mph
NNW
|
|
Wednesday
Jul 22
|
Sunny
|
79°F |
10 mph
N
|
|
Wednesday Night
Jul 22
|
Mostly Clear
|
63°F |
0 to 10 mph
N
|
|
Thursday
Jul 23
|
Sunny
|
81°F |
5 to 10 mph
NNW
|
|
Thursday Night
Jul 23
|
Partly Cloudy
|
65°F |
0 to 10 mph
S
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Harwood Heights.
