10-day forecast for Westmont, IL: 61° to 91°, with precipitation expected on 5 days. The table below breaks each day into morning, afternoon, evening and overnight.
86°
Best day: Wednesday, August 12
87° · 0.89 in
Worst day: Tuesday, August 11
Tap any day below to see morning, afternoon, evening and overnight.
Mon, 1091° / 72°0.67
Morning77°feels 78°
Afternoon90°feels 101°
Evening77°feels 79°
Overnight76°feels 77°
91 °
Westmont, Monday, 10 August
Heavy rain. High 91°, low 72°.
Pressure29.88 inHg
Wind4.4 mph SW
Humidity62%
Visibility6.2 mi
Dew point73°
Tue, 1187° / 66°0.89
Morning70°feels 71°
Afternoon81°feels 88°
Evening71°feels 72°
Overnight68°feels 69°
87 °
Westmont, Tuesday, 11 August
Heavy rain. High 87°, low 66°.
Pressure29.83 inHg
Wind8.4 mph S
Humidity65%
Visibility6.2 mi
Dew point73°
Wed, 1286° / 67°0.03
Morning69°feels 70°
Afternoon86°feels 87°
Evening77°feels 78°
Overnight69°feels 70°
86 °
Westmont, Wednesday, 12 August
Light rain. High 86°, low 67°.
Pressure29.85 inHg
Wind1.5 mph N
Humidity50%
Visibility6.2 mi
Dew point64°
Thu, 1376° / 65°0.13
Morning71°feels 71°
Afternoon74°feels 74°
Evening65°feels 65°
Overnight70°feels 71°
76 °
Westmont, Thursday, 13 August
Light rain. High 76°, low 65°.
Pressure29.94 inHg
Wind4.9 mph E
Humidity51%
Visibility6.2 mi
Dew point57°
Fri, 1476° / 63°0
Morning67°feels 67°
Afternoon75°feels 74°
Evening71°feels 70°
Overnight67°feels 67°
76 °
Westmont, Friday, 14 August
Overcast. High 76°, low 63°.
Pressure30.15 inHg
Wind12.3 mph E
Humidity43%
Visibility—
Dew point50°
Sat, 1576° / 66°0.03
Morning68°feels 67°
Afternoon73°feels 72°
Evening69°feels 69°
Overnight67°feels 67°
76 °
Westmont, Saturday, 15 August
Light rain. High 76°, low 66°.
Pressure30.21 inHg
Wind11.9 mph SE
Humidity46%
Visibility—
Dew point50°
Sun, 1678° / 64°0.24
Morning69°feels 70°
Afternoon78°feels 78°
Evening73°feels 73°
Overnight68°feels 69°
78 °
Westmont, Sunday, 16 August
Rain. High 78°, low 64°.
Pressure29.97 inHg
Wind9.9 mph NW
Humidity71%
Visibility—
Dew point66°
Mon, 1779° / 66°0
Morning69°feels 69°
Afternoon75°feels 75°
Evening73°feels 72°
Overnight67°feels 67°
79 °
Westmont, Monday, 17 August
Light rain. High 79°, low 66°.
Pressure30.09 inHg
Wind6.5 mph N
Humidity49%
Visibility—
Dew point54°
Tue, 1880° / 61°0
Morning64°feels 64°
Afternoon72°feels 73°
Evening75°feels 75°
Overnight69°feels 69°
80 °
Westmont, Tuesday, 18 August
Overcast. High 80°, low 61°.
Pressure29.91 inHg
Wind7.2 mph S
Humidity71%
Visibility—
Dew point60°
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 Westmont, 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.