10-day forecast for Oak, IL: 57° to 100°, with precipitation expected on 3 days. The table below breaks each day into morning, afternoon, evening and overnight.
100°
Best day: Tuesday, August 11
81° · 0.74 in
Worst day: Friday, August 14
Tap any day below to see morning, afternoon, evening and overnight.
Sun, 0991° / 73°0
Morning78°feels 79°
Afternoon91°feels 93°
Evening82°feels 89°
Overnight75°feels 77°
91 °
Oak, Sunday, 9 August
Clear. High 91°, low 73°.
Pressure30.03 inHg
Wind10.6 mph S
Humidity46%
Visibility6.2 mi
Dew point66°
Mon, 1097° / 74°0
Morning78°feels 79°
Afternoon96°feels 101°
Evening84°feels 91°
Overnight76°feels 78°
97 °
Oak, Monday, 10 August
Clear. High 97°, low 74°.
Pressure30.03 inHg
Wind12.8 mph SW
Humidity46%
Visibility6.2 mi
Dew point69°
Tue, 11100° / 75°0
Morning80°feels 83°
Afternoon99°feels 103°
Evening87°feels 92°
Overnight78°feels 79°
100 °
Oak, Tuesday, 11 August
Mostly clear. High 100°, low 75°.
Pressure29.94 inHg
Wind14.6 mph SW
Humidity41%
Visibility6.2 mi
Dew point68°
Wed, 1297° / 78°0
Morning82°feels 85°
Afternoon90°feels 94°
Evening82°feels 86°
Overnight82°feels 85°
97 °
Oak, Wednesday, 12 August
Overcast. High 97°, low 78°.
Pressure29.85 inHg
Wind14.3 mph W
Humidity39%
Visibility6.2 mi
Dew point66°
Thu, 1387° / 72°0.26
Morning75°feels 77°
Afternoon81°feels 85°
Evening76°feels 78°
Overnight73°feels 74°
87 °
Oak, Thursday, 13 August
Rain. High 87°, low 72°.
Pressure29.91 inHg
Wind8.4 mph SW
Humidity72%
Visibility—
Dew point70°
Fri, 1481° / 64°0.74
Morning72°feels 73°
Afternoon79°feels 79°
Evening72°feels 72°
Overnight65°feels 65°
81 °
Oak, Friday, 14 August
Heavy rain. High 81°, low 64°.
Pressure30.09 inHg
Wind10.5 mph NE
Humidity58%
Visibility—
Dew point62°
Sat, 1581° / 57°0
Morning64°feels 64°
Afternoon78°feels 78°
Evening70°feels 70°
Overnight63°feels 63°
81 °
Oak, Saturday, 15 August
Overcast. High 81°, low 57°.
Pressure30.27 inHg
Wind7.6 mph E
Humidity38%
Visibility—
Dew point49°
Sun, 1686° / 60°0.01
Morning67°feels 66°
Afternoon82°feels 82°
Evening74°feels 75°
Overnight70°feels 70°
86 °
Oak, Sunday, 16 August
Light rain. High 86°, low 60°.
Pressure30.21 inHg
Wind5.9 mph S
Humidity36%
Visibility—
Dew point51°
Mon, 1786° / 70°0.19
Morning75°feels 77°
Afternoon85°feels 91°
Evening81°feels 87°
Overnight76°feels 77°
86 °
Oak, Monday, 17 August
Light rain. High 86°, low 70°.
Pressure30.00 inHg
Wind16.5 mph SW
Humidity61%
Visibility—
Dew point69°
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 Oak, 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.