Rock Falls Weather in September

September in Rock Falls brings high temperatures, with daytime highs of 25°C (77°F) and nights around 11°C (52°F). Quite a bit of rainfall is expected, around 84 mm (3.3 in), so pack an umbrella.

Rainfall in Rock Falls in September

Past climate data indicates that roughly 8 days will see rain, totalling around 84 mm (3.3 in) for the month. Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.

Temperature in Rock Falls in September

Rock Falls has perfect weather in September, with days reaching 25°C (77°F) and nights cooling to 11°C (52°F). Overall, the month follows a fairly predictable daily temperature pattern. Nights drop to around 11°C (52°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.

So this is a great month to visit if you prefer dry days with pleasant temperatures.

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• January
• February
• March
• April

• May
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• 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 Rock Falls's climate page.

Rock Falls Temperature in September

Min Temperature 11°C (52°F)  

Max Temperature 25°C (77°F)  

Chance of Rain 27%  

Precipitation 84 mm (3.3 in)  

Rainy days 8 days  

What to Wear in Rock Falls in September

For Rock Falls in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho.

What To Do in Rock Falls in September

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

Cycling

9/10

Walking

9/10

Camping

8/10

Outdoor sports

9/10

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 Rock Falls's climate page.

More climate data for Rock Falls

Temperature Rainfall

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