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United States weather

Weather in Houston, Texas for September 2025

Your guide to Houston weather in September - trends and predictions

    Official Weather Alert ⚠️

  • Meteorological - Air Quality Alert - See hour by hour.

    • Temperatures

  • Until now, September 2025 in Houston has been nearly identical to the historical average, with a temperature of 33 °F (showing only a slight deviation of -0.1 °F).

  • The forecast for the upcoming days in Houston predicts a temperature of 35.6 °F, which is slightly above the historical average.

  • In general, the average temperature in Houston at the beginning of September is 32.7 °F. As the month progressed, temperatures tended to moderately rise, reaching an average of 34.6 °F by the end of September.

    • Rain 🌧️

  • Houston in September brings notable rainfall, with an average of 16 rainy days and a total precipitation of 77.7 mm.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
14
Dry days
Average rainy days
16
Rainy days
Average snowy days
0
Snow days
Average temperatures
33°/24°
Temperatures
Average wind speed
16 km/h
Avg max wind
Average humidity
63 %
Avg humidity

Houston Weather September

Move between months or click on a day
August
October
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Moderate or heavy rain shower
33°
2
Moderate or heavy rain shower
34°
3
Moderate rain at times
33°
4
Light rain shower
32°
5
Patchy rain possible
31°
6
Patchy rain possible
33°
7
Partly cloudy
33°
8
Sunny
34°
9
Sunny
34°
10
Sunny
34°
11
Partly cloudy
33°
12
Overcast
32°
13
Weather Alert Sunny
38°
14
Partly cloudy
34°
15
Partly cloudy
34°
16
Sunny
34°
17
Sunny
35°
18
Sunny
33°
19
Sunny
35°
20
Sunny
37°
21
Sunny
36°
22
Sunny
36°
23
Partly cloudy
37°
24
Sunny
38°
25
Sunny
37°
26
Sunny
35°
27
Patchy rain possible
33°
28
Sunny
34°
29
Sunny
32°
30
Sunny
33°

Temperatures trend during September in Houston

See the weather trend as well as the moving average line

September weather in Houston day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
Sept. 1 Moderate or heavy rain shower
Moderate or heavy rain shower
 33° /25° 7.6 mm 7
Sept. 2 Moderate or heavy rain shower
Moderate or heavy rain shower
 34° /25° 4 mm 7
Sept. 3 Moderate rain at times
Moderate rain at times
 33° /25° 5.6 mm 7
Sept. 4 Light rain shower
Light rain shower
 32° /24° 1.6 mm 7
Sept. 5 Patchy rain possible
Patchy rain possible
 31° /24° 0.6 mm 7
Sept. 6 Patchy rain possible
Patchy rain possible
 33° /25° 0.6 mm 7
Sept. 7 Partly cloudy
Partly cloudy
 33° /24° 0.6 mm 8
Sept. 8 Sunny
Sunny
 34° /23° 0 mm 8
Sept. 9 Sunny
Sunny
 34° /22° 0.2 mm 8
Sept. 10 Sunny
Sunny
 34° /23° 1 mm 8
Sept. 11 Partly cloudy
Partly cloudy
 33° /22° 2 mm 7
Sept. 12 Overcast
Overcast
 32° /23° 0 mm 7
Sept. 13 Sunny
Sunny
 38° /24° 0 mm 2
Sept. 14 Partly cloudy
Partly cloudy
 34° /25° 0 mm 1.8
Sept. 15 Partly cloudy
Partly cloudy
 34° /25° 0 mm 2
Sept. 16 Sunny
Sunny
 34° /25° 0 mm 2.1
Sept. 17 Sunny
Sunny
 35° /26° 0 mm 0
Sept. 18 Sunny
Sunny
 33° /25° 0 mm 7
Sept. 19 Sunny
Sunny
 35° /25° 0 mm 7
Sept. 20 Sunny
Sunny
 37° /25° 0 mm 7
Sept. 21 Sunny
Sunny
 36° /25° 0 mm 7
Sept. 22 Sunny
Sunny
 36° /25° 0 mm 7
Sept. 23 Partly cloudy
Partly cloudy
 37° /26° 0 mm 8
Sept. 24 Sunny
Sunny
 38° /27° 0 mm 8
Sept. 25 Sunny
Sunny
 37° /26° 0 mm 8
Sept. 26 Sunny
Sunny
 35° /25° 0 mm 7
Sept. 27 Patchy rain possible
Patchy rain possible
 33° /22° 0.2 mm 8
Sept. 28 Sunny
Sunny
 34° /22° 6.5 mm 8
Sept. 29 Sunny
Sunny
 32° /22° 7 mm 8
Sept. 30 Sunny
Sunny
 33° /22° 2.9 mm 8
Next
Important Notice
Our weather forecast for Houston 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 Houston forecast closer to your planned date for the most up-to-date weather information.
Change Month
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Houston in September - FAQ

What are the expected maximum and minimum temperatures in Houston during September?
During September, expect a variety of temperatures with highs around 33° and lows near 24°, suitable for diverse activities and preferences.
How much rainfall should be expected in Houston during September?
Moderate rainfall is anticipated in Houston during September, with a total of 77.7 mm spread over approximately 16 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Houston during September?
The average wind speed in Houston during September is 16 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Houston

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

UV exposure in Houston during September

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

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Location coordinates Where is Houston?

Get accurate weather forecasts for Houston, located at latitude 29.763 and longitude -95.363. Stay updated with localized weather information tailored for Houston.

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