Dayton weather in September 2025

The temperatures in Dayton in September are comfortable with low of 14°C and and high up to 24°C.

You can expect about 3 to 8 days of rain in Dayton during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.

Our weather forecast can give you a great sense of what weather to expect in Dayton in September 2025.

If you’re planning to visit Dayton in the near future, we highly recommend that you review the 14 day weather forecast for Dayton before you arrive.

Temperatures

24° / 14°

Rainy Days

Snowy Days

Dry Days

Rainfall

Sun Hours

10.4

Hrs

Sun	Mon	Tue	Wed	Thu	Fri	Sat
	1 27° /16°	2 27° /16°	3 28° /16°	4 27° /16°	5 26° /16°	6 26° /16°
7 24° /15°	8 25° /14°	9 27° /15°	10 26° /16°	11 27° /16°	12 27° /17°	13 26° /16°
14 26° /15°	15 27° /14°	16 26° /15°	17 25° /14°	18 25° /15°	19 25° /14°	20 26° /16°
21 27° /17°	22 24° /14°	23 21° /11°	24 23° /12°	25 23° /14°	26 24° /14°	27 25° /13°
28 21° /14°	29 23° /13°	30 24° /13°

Explore the weather in Dayton in other months

Dayton annual weather

Month	Temperatures	Rainy Days	Dry Days	Snowy Days	Rainfall	Weather	More details
January	1° / -6°	6	11	14	79 mm	Awful	Dayton in January
February	3° / -4°	6	11	11	97 mm	Awful	Dayton in February
March	10° / 1°	8	17	6	110 mm	Awful	Dayton in March
April	16° / 6°	8	20	2	136 mm	Bad	Dayton in April
May	22° / 13°	8	23	0	155 mm	Ok	Dayton in May
June	26° / 17°	8	22	0	146 mm	Good	Dayton in June
July	28° / 18°	8	23	0	139 mm	Good	Dayton in July
August	27° / 17°	6	25	0	112 mm	Perfect	Dayton in August
September	24° / 14°	5	25	0	97 mm	Perfect	Dayton in September
October	18° / 8°	4	26	0	91 mm	Good	Dayton in October
November	10° / 2°	5	22	3	87 mm	Bad	Dayton in November
December	5° / -1°	7	14	10	96 mm	Awful	Dayton in December