Willowbrook
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Willowbrook Weather in September

Willowbrook in September sees high daytime temperatures of 25°C (77°F) and nighttime lows of 13°C (55°F). Rainfall is fairly high this month at around 85 mm (3.3 in), so pack a rain jacket to stay dry.

Rainfall in Willowbrook in September

Records from the past 30 years suggest around 10 days of rain, with 85 mm (3.3 in) average for the month. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.

Temperature in Willowbrook in September

September tends to be one of the excellent months in Willowbrook, with 25°C (77°F) in the afternoon and 13°C (55°F) overnight. This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. With lows of 13°C (55°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.

Sunshine in Willowbrook in September

The city usually sees around 226 hours of sunlight, indicating many sunny days , a great month for sightseeing.

Wind Speed in Willowbrook in September

Wind speeds average 4 m/s (8 knots) during September. At this speed, expect moderate winds that can raise dust and move small branches. Since this is an average, some days have gentle light winds while others experience stronger breezes that are quite noticeable.

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

Willowbrook Temperature in September

Min Temperature
13°C (55°F)
Max Temperature
25°C (77°F)
Chance of Rain
33%
Precipitation
85 mm (3.3 in)
Rainy days
10 days
Humidity
71% *
Windspeed
4 m/s (8 knots) *
Sunshine
226 hours *
Percentage Sunshine
60% *
* Data from: Chicago, the United States of America (23 KM, 14 Miles).

Willowbrook Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in Willowbrook - and find the best time to visit.

Best Places in the United States of America in September

Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in September →

perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

What to Wear in Willowbrook in September

Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Prepare for significant rainfall with proper waterproof clothing and shoes. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.

What To Do in Willowbrook in September

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

  • Swimming
    9/10
  • Cycling
    9/10
  • Walking
    9/10
  • Barbeque
    8/10
  • Camping
    8/10
  • Outdoor sports
    9/10

Willowbrook 3-Day Forecast

Popular in September

Where to go in September - average daytime high across popular destinations.

Bucket list

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