Joliet Weather in July

July in Joliet sees daytime temperatures around 29°C (84°F) and lows of 18°C (64°F) at night. With around 116 mm (4.6 in) of rainfall expected, it's worth packing a rain jacket.

Rainfall in Joliet in July

You can expect rain on roughly 12 days based on historical data, averaging 116 mm (4.6 in) for the month. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.

Temperature in Joliet in July

Expect highs of 29°C (84°F) in Joliet in July, with nights dropping to around 18°C (64°F). Conditions stay fairly consistent through the month, making it easier to plan what to wear. With overnight lows of 18°C (64°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. On average, it is the warmest month of the year.

Sunshine in Joliet in July

Expect a lot of sunshine this month, with about 319 hours of sun. These sunny conditions add to the overall experience.

Should you favor a climate that's both dry and comfortably warm, September typically offers the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

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For a detailed overview over the year and the best time to visit the United States of America, check out our Joliet's climate page.

Joliet Temperature in July

Min Temperature 18°C (64°F)  

Max Temperature 29°C (84°F)  

Chance of Rain 40%  

Precipitation 116 mm (4.6 in)  

Rainy days 12 days  

Humidity 68% *  

Sunshine 319 hours *  

Percentage Sunshine 69% *  

* Data from: Chicago, the United States of America (53 KM, 33 Miles).

What to Wear in Joliet in July

Warm but pleasant conditions in Joliet in July. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Expect heavy rainfall, so bring good rain protection and waterproof bags. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Joliet in July

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

9/10

Cycling

7/10

Walking

7/10

Camping

6/10

Outdoor sports

7/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Joliet's climate page.

More climate data for Joliet

Temperature Rainfall Sunshine Humidity

See the full Joliet climate overview or explore weather in the United States of America.