Houston weather in September 2025

The weather in Houston in September is very hot. The average temperatures are between 24°C and 31°C, drinking water regularly is advisable.

You can expect rain for roughly half of the month of September in Houston. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.

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

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

Temperatures

31° / 24°

Rainy Days

Snowy Days

Dry Days

Rainfall

312

Sun Hours

11.0

Hrs

Sun	Mon	Tue	Wed	Thu	Fri	Sat
	1 34° /26°	2 34° /26°	3 33° /26°	4 34° /26°	5 32° /26°	6 34° /26°
7 35° /25°	8 35° /25°	9 34° /25°	10 34° /25°	11 33° /25°	12 33° /25°	13 33° /25°
14 32° /25°	15 33° /25°	16 33° /25°	17 33° /25°	18 33° /24°	19 33° /24°	20 32° /23°
21 33° /24°	22 33° /24°	23 32° /24°	24 32° /23°	25 33° /24°	26 33° /24°	27 32° /24°
28 33° /23°	29 31° /23°	30 33° /23°

Explore the weather in Houston in other months

Houston annual weather

Month	Temperatures	Rainy Days	Dry Days	Rainfall	Weather	More details
January	16° / 9°	6	25	111 mm	Good	Houston in January
February	18° / 11°	6	22	106 mm	Good	Houston in February
March	22° / 14°	6	25	108 mm	Good	Houston in March
April	26° / 17°	6	24	123 mm	Perfect	Houston in April
May	29° / 21°	9	23	191 mm	Ok	Houston in May
June	32° / 25°	10	20	229 mm	Ok	Houston in June
July	33° / 25°	12	19	248 mm	Ok	Houston in July
August	34° / 26°	12	19	303 mm	Bad	Houston in August
September	31° / 24°	12	18	312 mm	Ok	Houston in September
October	28° / 19°	7	24	180 mm	Good	Houston in October
November	21° / 14°	5	25	124 mm	Good	Houston in November
December	18° / 11°	6	24	127 mm	Good	Houston in December