Markham, IL Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Markham, IL in one place.
Sunny, with a high near 85. Northeast wind 6 to 10 mph, with gusts as high as 17 mph.
Local Weather Overview
This forecast page for Markham, 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 11, 2026 9:11 PM CDT.
The active forecast window currently covers Jul 12 to Jul 18, 2026 for Markham, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 12 to Jul 18, 2026
- Latest sync
- Jul 11, 2026 9:11 PM CDT
- Forecast office
- ILX
- Source
- NOAA / NWS
Daily Outlook
This Week in Markham
Friday looks like the warmest upcoming period in Markham at 91 degrees F.
Sunday Night is the coolest period ahead with temperatures near 64 degrees F.
The strongest winds are forecast for Sunday at about 6 to 10 mph NE.
Precipitation is mentioned in 2 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 11, 2026 9:11 PM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- ILX
- Radar station
- KILX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Clear, with a low around 64. Northeast wind 2 to 8 mph.
Sunny, with a high near 86. North northeast wind 2 to 7 mph.
Clear, with a low around 67. North northeast wind 0 to 6 mph.
Sunny, with a high near 89. Northeast wind 2 to 6 mph.
Mostly clear, with a low around 69. East wind 0 to 5 mph.
Sunny, with a high near 89.
Mostly clear, with a low around 71.
Sunny, with a high near 90.
Mostly clear, with a low around 72.
A slight chance of showers and thunderstorms after 1pm. Sunny, with a high near 91.
A slight chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 73.
Sunny, with a high near 91.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Sunday
Jul 12
|
Sunny
|
85°F |
6 to 10 mph
NE
|
|
Sunday Night
Jul 12
|
Clear
|
64°F |
2 to 8 mph
NE
|
|
Monday
Jul 13
|
Sunny
|
86°F |
2 to 7 mph
NNE
|
|
Monday Night
Jul 13
|
Clear
|
67°F |
0 to 6 mph
NNE
|
|
Tuesday
Jul 14
|
Sunny
|
89°F |
2 to 6 mph
NE
|
|
Tuesday Night
Jul 14
|
Mostly Clear
|
69°F |
0 to 5 mph
E
|
|
Wednesday
Jul 15
|
Sunny
|
89°F |
0 to 3 mph
E
|
|
Wednesday Night
Jul 15
|
Mostly Clear
|
71°F |
2 mph
SSE
|
|
Thursday
Jul 16
|
Sunny
|
90°F |
2 to 6 mph
SSW
|
|
Thursday Night
Jul 16
|
Mostly Clear
|
72°F |
5 mph
SW
|
|
Friday
Jul 17
|
Sunny then Slight Chance Showers And Thunderstorms
|
91°F |
5 to 8 mph
WSW
|
|
Friday Night
Jul 17
|
Slight Chance Showers And Thunderstorms then Mostly Clear
|
73°F |
7 mph
SW
|
|
Saturday
Jul 18
|
Sunny
|
91°F |
7 to 10 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Markham.