Markham, IL Weather Forecast
Local 7-day forecast
Slight Chance Rain Showers then Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Markham, IL in one place.
A slight chance of rain showers between 7am and 1pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 81. East wind 6 to 9 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
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: May 24, 2026 12:39 AM CDT.
The active forecast window currently covers May 26 to May 30, 2026 for Markham, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- May 26 to May 30, 2026
- Latest sync
- May 24, 2026 12:39 AM CDT
- Forecast office
- ILX
- Source
- NOAA / NWS
Daily Outlook
This Week in Markham
Thursday looks like the warmest upcoming period in Markham at 83 degrees F.
Friday Night is the coolest period ahead with temperatures near 56 degrees F.
The strongest winds are forecast for Friday at about 8 to 12 mph ENE.
Precipitation is mentioned in 9 upcoming forecast periods.
Forecast Details
- Last updated
- May 24, 2026 12:39 AM CDT
- Coverage
- 5 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
A chance of showers and thunderstorms before 1am, then showers and thunderstorms likely. Mostly cloudy, with a low around 64. East southeast wind around 8 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
Showers and thunderstorms likely. Mostly cloudy, with a high near 81. Chance of precipitation is 70%.
Showers and thunderstorms likely before 7pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Chance of precipitation is 70%.
A slight chance of rain showers before 7am, then a slight chance of showers and thunderstorms between 7am and 1pm, then showers and thunderstorms likely. Mostly cloudy, with a high near 83.
Showers and thunderstorms likely before 7pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 61.
A chance of rain showers before 1pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 79.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 56.
A slight chance of rain showers. Partly sunny, with a high near 78.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
May 26
|
Slight Chance Rain Showers then Chance Showers And Thunderstorms
|
81°F |
6 to 9 mph
E
|
|
Tuesday Night
May 26
|
Chance Showers And Thunderstorms
|
64°F |
8 mph
ESE
|
|
Wednesday
May 27
|
Showers And Thunderstorms Likely
|
81°F |
8 mph
SE
|
|
Wednesday Night
May 27
|
Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
|
64°F |
6 mph
ESE
|
|
Thursday
May 28
|
Slight Chance Showers And Thunderstorms
|
83°F |
7 mph
E
|
|
Thursday Night
May 28
|
Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
|
61°F |
8 mph
ENE
|
|
Friday
May 29
|
Chance Rain Showers then Chance Showers And Thunderstorms
|
79°F |
8 to 12 mph
ENE
|
|
Friday Night
May 29
|
Chance Showers And Thunderstorms
|
56°F |
10 mph
ENE
|
|
Saturday
May 30
|
Slight Chance Rain Showers
|
78°F |
10 mph
ENE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Markham.