DeKalb
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DeKalb Weather in September

September in DeKalb brings high temperatures, with highs of 24°C (75°F) and nights dropping to 12°C (54°F). Rainfall is on the higher side this month, averaging around 76 mm (3 in), so keep a rain jacket handy.

Rainfall in DeKalb in September

The climate data from previous years indicates about 9 days of rain, averaging 76 mm (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 DeKalb in September

The temperature in DeKalb in September is excellent. Daytime highs reach 24°C (75°F), with nights dropping to 12°C (54°F). The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. With overnight lows of 12°C (54°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 DeKalb in September

Expect sunny days throughout the month, with an estimated 226 hours of sunshine. This makes it a pleasant time to visit DeKalb.

If you're a fan of comfortable temperatures and drier conditions, September is a great time to visit.

DeKalb Temperature in September

Min Temperature
12°C (54°F)
Max Temperature
24°C (75°F)
Chance of Rain
30%
Precipitation
76 mm (3 in)
Rainy days
9 days
Humidity
71% *
Sunshine
226 hours *
Percentage Sunshine
60% *
* Data from: Chicago, the United States of America (70 KM, 43 Miles).

DeKalb Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in DeKalb - 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 DeKalb 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. Rain gear is recommended, you can expect wet weather on multiple days. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.

What To Do in DeKalb 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

DeKalb 3-Day Forecast

Popular in September

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

Bucket list

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