Decatur
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Decatur Weather in September

During September, Decatur experiences high daytime temperatures of 29°C (84°F) and cooler nights around 18°C (64°F). Expect quite a bit of rainfall. Around 99 mm (3.9 in) is typical.

Rainfall in Decatur in September

Looking at the last 30 years, the data shows about 8 days with rain, averaging 99 mm (3.9 in) 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 Decatur in September

September in Decatur is generally excellent, with days reaching 29°C (84°F) and nights settling 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. At 18°C (64°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.

Sunshine in Decatur in September

Enjoy a sunny month with about 227 hours of sunshine, the clear skies make Decatur even more beautiful.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. April, May, September and October typically offer the best weather for Decatur.

Decatur Temperature in September

Min Temperature
18°C (64°F)
Max Temperature
29°C (84°F)
Chance of Rain
25%
Precipitation
99 mm (3.9 in)
Rainy days
8 days
Humidity
74% *
Sunshine
227 hours *
Percentage Sunshine
61% *
* Data from: Atlanta, the United States of America (8 KM, 5 Miles).

Decatur Weather by Month

Pick a month to see the average temperature, rainfall and sunshine in Decatur - 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 Decatur in September

Warm weather calls for comfortable, breathable clothing in September. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). High rain levels are expected, so pack waterproof gear and an umbrella or poncho. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Decatur in September

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

  • Swimming
    9/10
  • Cycling
    7/10
  • Walking
    7/10
  • Camping
    8/10
  • Outdoor sports
    7/10

Decatur 3-Day Forecast

Popular in September

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

Bucket list

Need travel inspiration? Check out our bucket list articles and be inspired.