Joliet Weather in August

With daytime temperatures of 28°C (82°F) and nighttime lows of 17°C (63°F), August in Joliet brings high temperatures during the day. Do keep in mind that quite a bit of rainfall is typical. Around 131 mm (5.2 in) falls on average.

Rainfall in Joliet in August

The climate data from previous years indicates about 12 days of rain, averaging 131 mm (5.2 in) for the month. Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.

Temperature in Joliet in August

Joliet in August gets highs of 28°C (82°F) during the day and drops to 17°C (63°F) at night. This kind of day-to-night contrast is typical for this time of year. With overnight lows of 17°C (63°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.

Sunshine in Joliet in August

With approximately 280 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.

For Joliet itself, September generally stands out with 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.