Romeoville Weather in July

Romeoville in July sees high daytime temperatures of 29°C (84°F) and nighttime lows of 18°C (64°F). Rainfall is fairly high this month at around 108 mm (4.3 in), so pack a rain jacket to stay dry.

Rainfall in Romeoville in July

You can typically expect 11 days of rain this month, averaging around 108 mm (4.3 in). Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.

Temperature in Romeoville in July

If you're visiting Romeoville in July, expect highs of 29°C (84°F) and overnight lows around 18°C (64°F). The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. Nights cool down to 18°C (64°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions. On average, this month sees the highest temperatures of the year. Worth packing a few lighter outfits.

Sunshine in Romeoville in July

Expect sunny days throughout the month, with an estimated 319 hours of sunshine. This makes it a pleasant time to visit Romeoville.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. September typically offers the best weather for Romeoville.