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Markham IL Weather - Clear - 76°F
Clear
76°F
Updated 1:43 am
Feels Like 84°F
Humidity 89%
Wind N 0 mph
Barometer  29.95 in
Dew Point 73°F
Markham IL Weather - Clear - 24°C
Clear
24°C
Updated 1:43 am
Feels Like 29°C
Humidity 89%
Wind N 0 km/h
Barometer  101.4 kPa
Dew Point 23°C
Markham, IL Weather and Current Conditionsmarkham il weather forecast

Markham, IL Weather Forecast

Markham Illinois WeatherMarkham, Illinois Weather Weather Forecast
14 Day API Markham, IL Weather Forecast. Note: Our 7 day Markham, Illinois weather forecast is our most reliable, and specific forecast. This model should only be used as a probable scenario. Forecasting more than 7 days ahead is challenging.
Markham, IL Weather Forecast Dated: 143 AM Fri Sep 04 2026
Expect a very warm period with a mix of sun and clouds and occasional showers over the coming period. moderate humidity and no major pressure swings will dominate.

Friday, September 4, 2026

Mid-Morning
Markham Weather - 2026-09-04 - Morning - Sunny
81°F 27°C
Sunny
Mid-Afternoon
Markham Weather - 2026-09-04 - Afternoon - Sunny
92°F 33°C
Sunny
Early-Evening
Markham Weather - 2026-09-04 - Evening - Partly Cloudy
87°F 30°C
Partly Cloudy
Sizzling hot near 92°F 33°C with a heat index reaching 98°F 37°C, sunny through the afternoon, turning cloudy this evening, with steady humidity and steady pressure. Winds turning from the NW to the SSW at 6 mph 9 km/h.

Saturday, September 5, 2026

Mid-Morning
Markham Weather - 2026-09-05 - Morning - Sunny
80°F 27°C
Sunny
Mid-Afternoon
Markham Weather - 2026-09-05 - Afternoon - Sunny
92°F 33°C
Sunny
Early-Evening
Markham Weather - 2026-09-05 - Evening - Sunny
75°F 24°C
Sunny
Hot and sweltering around 92°F 33°C, sunny throughout the day, with steady humidity and steady pressure. Winds blowing from the N at 7 mph 12 km/h.

Sunday, September 6, 2026

Mid-Morning
Markham Weather - 2026-09-06 - Morning - Sunny
72°F 22°C
Sunny
Mid-Afternoon
Markham Weather - 2026-09-06 - Afternoon - Sunny
79°F 26°C
Sunny
Early-Evening
Markham Weather - 2026-09-06 - Evening - Partly Cloudy
73°F 23°C
Partly Cloudy
Enjoyable around 79°F 26°C, sunny in the morning, becoming partly cloudy through the afternoon and evening, with steady humidity and steady pressure. Winds moving from the ENE to the NE at 8 mph 13 km/h.

Monday, September 7, 2026

Mid-Morning
Markham Weather - 2026-09-07 - Morning - Sunny
67°F 19°C
Sunny
Mid-Afternoon
Markham Weather - 2026-09-07 - Afternoon - Sunny
79°F 26°C
Sunny
Early-Evening
Markham Weather - 2026-09-07 - Evening - Sunny
72°F 22°C
Sunny
Mild temperatures up to 79°F 26°C, sunny through the afternoon, turning cloudy this evening, with steady humidity and steady pressure. Winds swinging from the E to the ENE at 7 mph 11 km/h.

Tuesday, September 8, 2026

Mid-Morning
Markham Weather - 2026-09-08 - Morning - Overcast
67°F 20°C
Overcast
Mid-Afternoon
Markham Weather - 2026-09-08 - Afternoon - Overcast
84°F 29°C
Overcast
Early-Evening
Markham Weather - 2026-09-08 - Evening - Overcast
81°F 27°C
Overcast
Very warm with a high of 84°F 29°C, overcast through the afternoon, turning partly cloudy this evening, with lower humidity and barometric pressure falling. Winds shifting from the SE to the S at 10 mph 16 km/h. Gusts up to 23 mph 37 km/h.

Wednesday, September 9, 2026

Mid-Morning
Markham Weather - 2026-09-09 - Morning - Overcast
81°F 27°C
Overcast
Mid-Afternoon
Markham Weather - 2026-09-09 - Afternoon - Partly Cloudy
87°F 31°C
Partly Cloudy
Early-Evening
Markham Weather - 2026-09-09 - Evening - Cloudy
82°F 28°C
Cloudy
Very warm near 87°F 31°C, though humidity makes it feel like 91°F 33°C, cloudy through the afternoon, turning overcast this evening, with increasing humidity and steady pressure. Winds decreasing from SW 13 mph 20 km/h to ESE 5 mph 7 km/h.

Thursday, September 10, 2026

Mid-Morning
Markham Weather - 2026-09-10 - Morning - Scattered Showers
74°F 23°C
Scattered Showers
Mid-Afternoon
Markham Weather - 2026-09-10 - Afternoon - Scattered Showers
82°F 28°C
Scattered Showers
Early-Evening
Markham Weather - 2026-09-10 - Evening - Scattered Showers
73°F 23°C
Scattered Showers
Balmy with temperatures reaching 82°F 28°C, periods of heavy rain and gusty conditions, with lower humidity and steady pressure. Winds switching from the ESE to the NE at 9 mph 14 km/h.

Friday, September 11, 2026

Mid-Morning
Markham Weather - 2026-09-11 - Morning - Scattered Showers
66°F 19°C
Scattered Showers
Mid-Afternoon
Markham Weather - 2026-09-11 - Afternoon - Scattered Showers
73°F 23°C
Scattered Showers
Early-Evening
Markham Weather - 2026-09-11 - Evening - Overcast
68°F 20°C
Overcast
Enjoyable around 73°F 23°C, scattered downpours possible, with steady humidity and steady pressure. Winds moving from the E to the ENE at 9 mph 14 km/h.

Saturday, September 12, 2026

Mid-Morning
Markham Weather - 2026-09-12 - Morning - Sunny
65°F 18°C
Sunny
Mid-Afternoon
Markham Weather - 2026-09-12 - Afternoon - Partly Cloudy
78°F 26°C
Partly Cloudy
Early-Evening
Markham Weather - 2026-09-12 - Evening - Sunny
72°F 22°C
Sunny
Mild temperatures up to 78°F 26°C, cloudy in the morning, becoming partly cloudy through the afternoon and evening, with steady humidity and steady pressure. Winds SE at 11 mph 18 km/h. Gusts up to 21 mph 34 km/h.

Sunday, September 13, 2026

Mid-Morning
Markham Weather - 2026-09-13 - Morning - Sunny
73°F 23°C
Sunny
Mid-Afternoon
Markham Weather - 2026-09-13 - Afternoon - Sunny
91°F 33°C
Sunny
Early-Evening
Markham Weather - 2026-09-13 - Evening - Sunny
86°F 30°C
Sunny
Sizzling hot near 91°F 33°C with a heat index reaching 94°F 35°C, sunny throughout the day, with steady humidity and steady pressure. Winds out of the SSW at 10 mph 17 km/h. Gusts up to 24 mph 39 km/h.

Monday, September 14, 2026

Mid-Morning
Markham Weather - 2026-09-14 - Morning - Overcast
79°F 26°C
Overcast
Mid-Afternoon
Markham Weather - 2026-09-14 - Afternoon - Overcast
92°F 33°C
Overcast
Early-Evening
Markham Weather - 2026-09-14 - Evening - Partly Cloudy
84°F 29°C
Partly Cloudy
Very hot with temperatures reaching 92°F 33°C, cloudy through the afternoon, turning partly cloudy this evening, with steady humidity and steady pressure. Winds turning from the SW to the SSW at 7 mph 11 km/h.

Tuesday, September 15, 2026

Mid-Morning
Markham Weather - 2026-09-15 - Morning - Sunny
76°F 25°C
Sunny
Mid-Afternoon
Markham Weather - 2026-09-15 - Afternoon - Sunny
89°F 32°C
Sunny
Early-Evening
Markham Weather - 2026-09-15 - Evening - Sunny
85°F 29°C
Sunny
Very warm near 89°F 32°C, though humidity makes it feel like 93°F 34°C, sunny throughout the day, with lower humidity and steady pressure. Winds switching from the SW to the NW at 6 mph 10 km/h.

Wednesday, September 16, 2026

Mid-Morning
Markham Weather - 2026-09-16 - Morning - Sunny
75°F 24°C
Sunny
Mid-Afternoon
Markham Weather - 2026-09-16 - Afternoon - Sunny
83°F 29°C
Sunny
Early-Evening
Markham Weather - 2026-09-16 - Evening - Partly Cloudy
75°F 24°C
Partly Cloudy
Quite warm around 83°F 29°C, sunny in the morning, becoming partly cloudy through the afternoon and evening, with lower humidity and steady pressure. Winds moving from the NE to the ESE at 6 mph 10 km/h.

Thursday, September 17, 2026

Mid-Morning
Markham Weather - 2026-09-17 - Morning - Light Showers
63°F 17°C
Light Showers
Mid-Afternoon
Markham Weather - 2026-09-17 - Afternoon - Scattered Showers
69°F 21°C
Scattered Showers
Early-Evening
Markham Weather - 2026-09-17 - Evening - Overcast
71°F 22°C
Overcast
Mild temperatures up to 69°F 21°C, scattered downpours possible, with steady humidity and barometric pressure falling. Winds blowing from the SSW at 10 mph 16 km/h.

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Weather by the Numbers

Fri, 4th
Markham IL Weather - Friday, Sep 4, 2026 - Sunny
Hi: 92°F 33°C
Lo: 76°F 24°C
Sunrise 06:20 AM
Sunset 07:19 PM
Wind WSW 9 mph14 km/h
Dew Point 68°F20°C
uv Index 7
Barometric Pressure 29.94 in1014 mb
POP 2% *
Humidity 51%
Sat, 5th
Markham IL Weather - Saturday, Sep 5, 2026 - Sunny
Hi: 93°F 34°C
Lo: 70°F 21°C
Sunrise 06:21 AM
Sunset 07:17 PM
Wind NW 7 mph12 km/h
Dew Point 65°F18°C
uv Index 7
Barometric Pressure 29.88 in1012 mb
POP 1% *
Humidity 45%
Sun, 6th
Markham IL Weather - Sunday, Sep 6, 2026 - Sunny
Hi: 79°F 26°C
Lo: 66°F 19°C
Sunrise 06:22 AM
Sunset 07:15 PM
Wind NE 10 mph16 km/h
Dew Point 56°F13°C
uv Index 7
Barometric Pressure 30.06 in1018 mb
POP 1% *
Humidity 46%
Mon, 7th
Markham IL Weather - Monday, Sep 7, 2026 - Sunny
Hi: 79°F 26°C
Lo: 61°F 16°C
Sunrise 06:23 AM
Sunset 07:14 PM
Wind E 8 mph13 km/h
Dew Point 47°F8°C
uv Index 6
Barometric Pressure 30.15 in1021 mb
POP 1% *
Humidity 36%
Tue, 8th
Markham IL Weather - Tuesday, Sep 8, 2026 - Cloudy
Hi: 86°F 30°C
Lo: 65°F 18°C
Sunrise 06:24 AM
Sunset 07:12 PM
Wind SSE 8 mph12 km/h
Dew Point 61°F16°C
uv Index 6
Barometric Pressure 30.09 in1019 mb
POP 7% *
Humidity 54%
Wed, 9th
Markham IL Weather - Wednesday, Sep 9, 2026 - Patchy Rain Nearby
Hi: 89°F 32°C
Lo: 76°F 25°C
Sunrise 06:25 AM
Sunset 07:10 PM
Wind WSW 12 mph20 km/h
Dew Point 65°F19°C
uv Index 7
Barometric Pressure 29.94 in1014 mb
POP 5% *
Humidity 49%
Thu, 10th
Markham IL Weather - Thursday, Sep 10, 2026 - Cloudy
Hi: 82°F 28°C
Lo: 68°F 20°C
Sunrise 06:26 AM
Sunset 07:09 PM
Wind NE 6 mph10 km/h
Dew Point 61°F16°C
uv Index 6
Barometric Pressure 29.94 in1014 mb
POP 17% *
Humidity 54%
Fri, 11th
Markham IL Weather - Friday, Sep 11, 2026 - Patchy Rain Nearby
Hi: 74°F 24°C
Lo: 64°F 18°C
Sunrise 06:27 AM
Sunset 07:07 PM
Wind ENE 10 mph16 km/h
Dew Point 55°F13°C
uv Index 5
Barometric Pressure 30 in1016 mb
POP 13% *
Humidity 61%
Sat, 12th
Markham IL Weather - Saturday, Sep 12, 2026 - Patchy Rain Nearby
Hi: 78°F 26°C
Lo: 60°F 16°C
Sunrise 06:28 AM
Sunset 07:05 PM
Wind SE 11 mph18 km/h
Dew Point 55°F13°C
uv Index 5
Barometric Pressure 30.09 in1019 mb
POP 7% *
Humidity 52%
Sun, 13th
Markham IL Weather - Sunday, Sep 13, 2026 - Sunny
Hi: 92°F 33°C
Lo: 66°F 19°C
Sunrise 06:29 AM
Sunset 07:03 PM
Wind SSW 11 mph17 km/h
Dew Point 60°F15°C
uv Index 7
Barometric Pressure 30.06 in1018 mb
POP 1% *
Humidity 43%
Mon, 14th
Markham IL Weather - Monday, Sep 14, 2026 - Partly Cloudy
Hi: 92°F 33°C
Lo: 73°F 23°C
Sunrise 06:30 AM
Sunset 07:02 PM
Wind WSW 9 mph15 km/h
Dew Point 65°F18°C
uv Index 8
Barometric Pressure 30 in1016 mb
POP 8% *
Humidity 46%
Tue, 15th
Markham IL Weather - Tuesday, Sep 15, 2026 - Sunny
Hi: 90°F 32°C
Lo: 71°F 22°C
Sunrise 06:31 AM
Sunset 07:00 PM
Wind WSW 10 mph17 km/h
Dew Point 65°F19°C
uv Index 7
Barometric Pressure 29.85 in1011 mb
POP 2% *
Humidity 53%
Wed, 16th
Markham IL Weather - Wednesday, Sep 16, 2026 - Sunny
Hi: 83°F 29°C
Lo: 69°F 21°C
Sunrise 06:32 AM
Sunset 06:58 PM
Wind NE 8 mph13 km/h
Dew Point 43°F6°C
uv Index 7
Barometric Pressure 30.03 in1017 mb
POP 0% *
Humidity 26%
Thu, 17th
Markham IL Weather - Thursday, Sep 17, 2026 - Light Rain Shower
Hi: 72°F 22°C
Lo: 62°F 17°C
Sunrise 06:33 AM
Sunset 06:56 PM
Wind ESE 9 mph15 km/h
Dew Point 59°F15°C
uv Index 4
Barometric Pressure 29.97 in1015 mb
POP 42% *
Humidity 85%
* POP = Probability of Precipitation. Data for 12:00 PM.