10-day forecast for Markham, IL: 37° to 83°, with precipitation expected on 4 days. The table below breaks each day into morning, afternoon, evening and overnight.
83°
Best day: Monday, October 12
45° · 0.25 in
Worst day: Sunday, October 18
Tap any day below to see morning, afternoon, evening and overnight.
Sun, 1175° / 61°0
Morning65°feels 65°
Afternoon73°feels 72°
Evening64°feels 64°
Overnight66°feels 66°
75 °
Markham, Sunday, 11 October
Clear. High 75°, low 61°.
Pressure29.97 inHg
Wind0.6 mph SE
Humidity65%
Visibility6.2 mi
Dew point58°
Mon, 1283° / 62°0
Morning64°feels 64°
Afternoon83°feels 84°
Evening76°feels 77°
Overnight62°feels 61°
83 °
Markham, Monday, 12 October
Partly cloudy. High 83°, low 62°.
Pressure29.85 inHg
Wind8.4 mph SW
Humidity57%
Visibility6.2 mi
Dew point63°
Tue, 1381° / 64°0
Morning70°feels 70°
Afternoon81°feels 83°
Evening65°feels 66°
Overnight73°feels 73°
81 °
Markham, Tuesday, 13 October
Clear. High 81°, low 64°.
Pressure29.77 inHg
Wind9.6 mph W
Humidity66%
Visibility6.2 mi
Dew point67°
Wed, 1468° / 57°0.1
Morning63°feels 63°
Afternoon67°feels 66°
Evening59°feels 58°
Overnight62°feels 63°
68 °
Markham, Wednesday, 14 October
Light rain. High 68°, low 57°.
Pressure30.09 inHg
Wind9.5 mph NE
Humidity64%
Visibility—
Dew point55°
Thu, 1564° / 53°0.05
Morning54°feels 53°
Afternoon58°feels 57°
Evening58°feels 57°
Overnight61°feels 61°
64 °
Markham, Thursday, 15 October
Light rain. High 64°, low 53°.
Pressure30.36 inHg
Wind10.2 mph E
Humidity63%
Visibility—
Dew point45°
Fri, 1665° / 52°0.01
Morning56°feels 55°
Afternoon64°feels 62°
Evening57°feels 54°
Overnight53°feels 50°
65 °
Markham, Friday, 16 October
Light rain. High 65°, low 52°.
Pressure29.88 inHg
Wind15.3 mph W
Humidity39%
Visibility—
Dew point38°
Sat, 1748° / 43°0.06
Morning44°feels 38°
Afternoon45°feels 40°
Evening45°feels 38°
Overnight43°feels 36°
48 °
Markham, Saturday, 17 October
Light rain. High 48°, low 43°.
Pressure30.06 inHg
Wind15.5 mph N
Humidity75%
Visibility—
Dew point38°
Sun, 1845° / 37°0.25
Morning38°feels 31°
Afternoon42°feels 37°
Evening42°feels 40°
Overnight41°feels 37°
45 °
Markham, Sunday, 18 October
Snow. High 45°, low 37°.
Pressure30.45 inHg
Wind15.5 mph N
Humidity89%
Visibility—
Dew point38°
Mon, 1951° / 38°0
Morning41°feels 38°
Afternoon48°feels 45°
Evening45°feels 42°
Overnight42°feels 39°
51 °
Markham, Monday, 19 October
Overcast. High 51°, low 38°.
Pressure30.42 inHg
Wind7.5 mph S
Humidity38%
Visibility—
Dew point23°
About this forecast
How reliable is a 10-day forecast?
The first 3–5 days are the most reliable, typically within 2–4°. From day six to ten the models show the trend: the direction of change is right more often than the exact numbers.
What does the time-of-day table show?
Temperature in Markham, IL around 8am, 2pm, 8pm and 2am each day — handy for planning a walk, a drive or work outdoors.
How is the best day chosen?
We weigh the daytime high against precipitation: a warm, dry day scores highest.