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United States weather

Weather in Dayton for September 2025

Your guide to Dayton weather in September - trends and predictions

    Temperatures

  • In general, the average temperature in Dayton at the beginning of September is 27.7 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 22 °F by the end of September.

    • Rain 🌧️

  • Dayton experiences moderate rainfall in September, with an average of 7 rainy days and a total precipitation of 90.7 mm.

    • More

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Average dry days
23
Dry days
Average rainy days
7
Rainy days
Average snowy days
0
Snow days
Average temperatures
27°/16°
Temperatures
Average wind speed
17 km/h
Avg max wind
Average humidity
60 %
Avg humidity

Dayton in September average weather

Move between months or click on a day
August
October
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Mist
30°
2
Sunny
25°
3
Overcast
26°
4
Partly cloudy
31°
5
Sunny
31°
6
Patchy light rain
31°
7
Sunny
20°
8
Sunny
21°
9
Sunny
28°
10
Sunny
30°
11
Sunny
32°
12
Overcast
30°
13
Overcast
28°
14
Partly cloudy
31°
15
Sunny
31°
16
Sunny
29°
17
Sunny
26°
18
Mist
26°
19
Overcast
28°
20
Partly cloudy
30°
21
Overcast
30°
22
Thundery outbreaks possible
29°
23
Fog
22°
24
Thundery outbreaks possible
22°
25
Mist
24°
26
Overcast
24°
27
Heavy rain at times
25°
28
Moderate rain at times
19°
29
Fog
19°
30
Fog
21°
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Temperatures trend during September in Dayton

See the weather trend as well as the moving average line

September weather day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
Sept. 1 Mist
Mist
 30° /18° 0 mm 6
Sept. 2 Sunny
Sunny
 25° /12° 0 mm 7
Sept. 3 Overcast
Overcast
 26° /10° 0 mm 6
Sept. 4 Partly cloudy
Partly cloudy
 31° /13° 0 mm 8
Sept. 5 Sunny
Sunny
 31° /16° 0 mm 8
Sept. 6 Patchy light rain
Patchy light rain
 31° /15° 3.4 mm 7
Sept. 7 Sunny
Sunny
 20° /8° 0 mm 6
Sept. 8 Sunny
Sunny
 21° /6° 0 mm 6
Sept. 9 Sunny
Sunny
 28° /11° 0 mm 7
Sept. 10 Sunny
Sunny
 30° /14° 0 mm 8
Sept. 11 Sunny
Sunny
 32° /15° 0 mm 8
Sept. 12 Overcast
Overcast
 30° /16° 0 mm 7
Sept. 13 Overcast
Overcast
 28° /17° 0 mm 6
Sept. 14 Partly cloudy
Partly cloudy
 31° /18° 0 mm 8
Sept. 15 Sunny
Sunny
 31° /18° 0 mm 8
Sept. 16 Sunny
Sunny
 29° /15° 0 mm 7
Sept. 17 Sunny
Sunny
 26° /10° 0 mm 7
Sept. 18 Mist
Mist
 26° /18° 0 mm 6
Sept. 19 Overcast
Overcast
 28° /17° 0 mm 6
Sept. 20 Partly cloudy
Partly cloudy
 30° /19° 0 mm 8
Sept. 21 Overcast
Overcast
 30° /20° 0 mm 7
Sept. 22 Thundery outbreaks possible
Thundery outbreaks possible
 29° /19° 18.8 mm 6
Sept. 23 Fog
Fog
 22° /18° 11.9 mm 5
Sept. 24 Thundery outbreaks possible
Thundery outbreaks possible
 22° /18° 0 mm 5
Sept. 25 Mist
Mist
 24° /18° 0 mm 5
Sept. 26 Overcast
Overcast
 24° /18° 0 mm 5
Sept. 27 Heavy rain at times
Heavy rain at times
 25° /19° 5.1 mm 6
Sept. 28 Moderate rain at times
Moderate rain at times
 19° /17° 13.9 mm 4
Sept. 29 Fog
Fog
 19° /17° 28 mm 4
Sept. 30 Fog
Fog
 21° /17° 9.8 mm 5
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Important Notice
Our weather forecast for Dayton in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Dayton forecast closer to your planned date for the most up-to-date weather information.

Dayton in September - FAQ

What are the expected maximum and minimum temperatures in Dayton during September?
During September, expect a variety of temperatures with highs around 27° and lows near 16°, suitable for diverse activities and preferences.
How much rainfall should be expected in Dayton during September?
Moderate rainfall is anticipated in Dayton during September, with a total of 90.7 mm spread over approximately 7 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Dayton during September?
The average wind speed in Dayton during September is 17 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Dayton

Explore the daily rainfall trends and prepare for Daytons September weather 💧

UV exposure in Dayton during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️

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Location coordinates Where is Dayton?

Get accurate weather forecasts for Dayton, located at latitude 39.759 and longitude -84.192. Stay updated with localized weather information tailored for Dayton.

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