Dayton Weather in September

September in Dayton brings very high temperatures, with highs of 32°C (90°F) and nights dropping to 21°C (70°F). Rainfall is on the higher side this month, averaging around 131 mm (5.2 in), so keep a rain jacket handy.

Rainfall in Dayton in September

Climate statistics over the past 30 years suggest around 11 days of rain, with 131 mm (5.2 in) average 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 Dayton in September

Expect highs of 32°C (90°F) in Dayton in September, with nights dropping to around 21°C (70°F). It's usually most comfortable outside during the morning and later in the day. At 21°C (70°F) overnight, nights are warm enough to sit outside comfortably in light clothing.

Sunshine in Dayton in September

Expect sunny days throughout the month, with an estimated 235 hours of sunshine. This makes it a pleasant time to visit Dayton.

If your ideal day consists of dry skies and pleasant temperatures, March typically offers the best circumstances for Dayton.

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• January
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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 Dayton's climate page.

Dayton Temperature in September

Min Temperature 21°C (70°F)  

Max Temperature 32°C (90°F)  

Chance of Rain 36%  

Precipitation 131 mm (5.2 in)  

Rainy days 11 days  

Humidity 77% *  

Sunshine 235 hours *  

Percentage Sunshine 64% *  

* Data from: Houston, the United States of America (55 KM, 34 Miles).

What to Wear in Dayton in September

Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Prepare for significant rainfall with proper waterproof clothing and shoes. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.

What To Do in Dayton 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

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 Dayton's climate page.

More climate data for Dayton

Temperature Rainfall Sunshine Humidity

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