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As of 13:06 CDT

Weather in Oak Brook, IL

83°Current weather

Oak Brook, Saturday, 8 August, 13:06

Mostly clear. Feels like 85°. High 85°, low 69°.

Pressure30.00 inHg
Wind5 mph SW
Humidity61%
Visibility6.2 mi
Dew point67°
Sun, 0986° / 64°0.9Heavy rain
86 °Heavy rain

Oak Brook, Sunday, 9 August

Heavy rain. High 86°, low 64°.

Pressure29.97 inHg
Wind6.2 mph E
Humidity99%
Visibility4.5 mi
Dew point70°
Mon, 1089° / 70°0.56Rain
89 °Rain

Oak Brook, Monday, 10 August

Rain. High 89°, low 70°.

Pressure29.88 inHg
Wind6.3 mph SW
Humidity59%
Visibility6.2 mi
Dew point69°
Tue, 1179° / 71°0.1Light rain
79 °Light rain

Oak Brook, Tuesday, 11 August

Light rain. High 79°, low 71°.

Pressure29.80 inHg
Wind13.3 mph W
Humidity69%
Visibility6.2 mi
Dew point68°
Wed, 1287° / 68°0.06Light rain
87 °Light rain

Oak Brook, Wednesday, 12 August

Light rain. High 87°, low 68°.

Pressure29.85 inHg
Wind2.5 mph SW
Humidity52%
Visibility6.2 mi
Dew point64°
Thu, 1374° / 65°0.09Light rain
74 °Light rain

Oak Brook, Thursday, 13 August

Light rain. High 74°, low 65°.

Pressure29.91 inHg
Wind7.9 mph N
Humidity68%
Visibility—
Dew point57°
Fri, 1477° / 61°0Clear
77 °Clear

Oak Brook, Friday, 14 August

Clear. High 77°, low 61°.

Pressure30.15 inHg
Wind9.2 mph W
Humidity38%
Visibility—
Dew point47°
Sat, 1578° / 61°0Overcast
78 °Overcast

Oak Brook, Saturday, 15 August

Overcast. High 78°, low 61°.

Pressure30.18 inHg
Wind7.4 mph SW
Humidity47%
Visibility—
Dew point54°
Sun, 1679° / 66°0.06Light rain
79 °Light rain

Oak Brook, Sunday, 16 August

Light rain. High 79°, low 66°.

Pressure30.15 inHg
Wind7.9 mph S
Humidity45%
Visibility—
Dew point54°
Mon, 1774° / 65°0.06Light rain
74 °Light rain

Oak Brook, Monday, 17 August

Light rain. High 74°, low 65°.

Pressure30.00 inHg
Wind6.6 mph E
Humidity78%
Visibility—
Dew point62°
Tue, 1881° / 67°0.08Light rain
81 °Light rain

Oak Brook, Tuesday, 18 August

Light rain. High 81°, low 67°.

Pressure29.88 inHg
Wind7.4 mph SW
Humidity65%
Visibility—
Dew point66°
Wed, 1976° / 63°0.02Light rain
76 °Light rain

Oak Brook, Wednesday, 19 August

Light rain. High 76°, low 63°.

Pressure30.00 inHg
Wind11.5 mph NE
Humidity78%
Visibility—
Dew point61°
Thu, 2069° / 57°0Overcast
69 °Overcast

Oak Brook, Thursday, 20 August

Overcast. High 69°, low 57°.

Pressure30.24 inHg
Wind11.1 mph NE
Humidity39%
Visibility—
Dew point42°
Fri, 2173° / 56°0Partly cloudy
73 °Partly cloudy

Oak Brook, Friday, 21 August

Partly cloudy. High 73°, low 56°.

Pressure30.24 inHg
Wind9.6 mph W
Humidity39%
Visibility—
Dew point44°
Sat, 2275° / 57°0Mostly clear
75 °Mostly clear

Oak Brook, Saturday, 22 August

Mostly clear. High 75°, low 57°.

Pressure30.12 inHg
Wind8.5 mph W
Humidity41%
Visibility—
Dew point47°
Sun, 2377° / 60°0Clear
77 °Clear

Oak Brook, Sunday, 23 August

Clear. High 77°, low 60°.

Pressure30.12 inHg
Wind6.7 mph W
Humidity46%
Visibility—
Dew point53°

About the monthly outlook

How accurate is a 30-day forecast?

The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Oak Brook, IL are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.

What does "above normal" mean?

We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.

Where do the 66-year records come from?

They are real temperature extremes recorded in Oak Brook, IL since 1960: the highest and lowest reading for each calendar date, with the year it happened.

How often is it updated?

The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.