Oak Brook Weather in August

During August, Oak Brook experiences high daytime temperatures of 28°C (82°F) and cooler nights around 18°C (64°F). Expect quite a bit of rainfall. Around 121 mm (4.8 in) is typical.

Rainfall in Oak Brook in August

Records from the past 30 years suggest around 11 days of rain, with 121 mm (4.8 in) average for the month. Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.

Temperature in Oak Brook in August

August in Oak Brook sees highs of 28°C (82°F) and lows of 18°C (64°F) overnight. Overall, the month follows a fairly predictable daily temperature pattern. Nights drop to around 18°C (64°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.

Sunshine in Oak Brook in August

Expect a lot of sunshine this month, with about 280 hours of sun. These sunny conditions add to the overall experience.

Wind Speed in Oak Brook in August

August sees wind speeds averaging 4 m/s (8 knots). You'll experience variable conditions with moderate winds that create small waves on water and keep branches moving. Conditions range from light winds to moderate breezes throughout the month.

If you prefer enjoying temperate temperatures and rain-free days, September typically offers the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.