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Weather in Bexar County for September 2025

Your guide to Bexar County weather in September - trends and predictions
  • In general, the average temperature in Bexar County at the beginning of September is 36.3 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 35.4 °F by the end of September.

  • With an average of 4 rainy days, Bexar County experiences minimal rainfall in September, ensuring that most days remain pleasantly dry.

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Average dry days
26
Dry days
Average rainy days
4
Rainy days
Average snowy days
0
Snow days
Average temperatures
38°/24°
Temperatures
Average wind speed
21 km/h
Avg max wind
Average humidity
55 %
Avg humidity

Bexar County in September average weather

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Temperatures trend during September in Bexar County

See the weather trend as well as the moving average line

September weather day by day

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Date Weather Temperatures Rain UV More
Sept. 1 Partly cloudy
Partly cloudy
37° /25° 0.1 mm 9
Sept. 2 Partly cloudy
Partly cloudy
36° /23° 1.1 mm 9
Sept. 3 Sunny
Sunny
35° /23° 10.9 mm 8
Sept. 4 Overcast
Overcast
35° /22° 0.8 mm 8
Sept. 5 Cloudy
Cloudy
37° /23° 0 mm 9
Sept. 6 Overcast
Overcast
37° /24° 0 mm 9
Sept. 7 Mist
Mist
37° /23° 0 mm 9
Sept. 8 Sunny
Sunny
37° /22° 0 mm 9
Sept. 9 Partly cloudy
Partly cloudy
37° /21° 0 mm 9
Sept. 10 Sunny
Sunny
37° /22° 0.6 mm 9
Sept. 11 Overcast
Overcast
36° /23° 0 mm 8
Sept. 12 Overcast
Overcast
35° /23° 0 mm 8
Sept. 13 Overcast
Overcast
34° /24° 0 mm 8
Sept. 14 Overcast
Overcast
37° /23° 0 mm 8
Sept. 15 Thundery outbreaks possible
Thundery outbreaks possible
35° /24° 0 mm 8
Sept. 16 Light rain shower
Light rain shower
36° /21° 5.1 mm 8
Sept. 17 Patchy rain possible
Patchy rain possible
38° /23° 0.1 mm 9
Sept. 18 Partly cloudy
Partly cloudy
36° /24° 0 mm 9
Sept. 19 Overcast
Overcast
36° /24° 0 mm 8
Sept. 20 Partly cloudy
Partly cloudy
38° /23° 0 mm 9
Sept. 21 Cloudy
Cloudy
35° /23° 0 mm 8
Sept. 22 Patchy rain possible
Patchy rain possible
37° /23° 0 mm 8
Sept. 23 Thundery outbreaks possible
Thundery outbreaks possible
37° /24° 0 mm 8
Sept. 24 Thundery outbreaks possible
Thundery outbreaks possible
37° /24° 2.3 mm 8
Sept. 25 Overcast
Overcast
34° /23° 9.1 mm 8
Sept. 26 Cloudy
Cloudy
34° /22° 0 mm 8
Sept. 27 Overcast
Overcast
35° /21° 0 mm 9
Sept. 28 Partly cloudy
Partly cloudy
37° /22° 0 mm 9
Sept. 29 Overcast
Overcast
35° /21° 0 mm 8
Sept. 30 Light rain shower
Light rain shower
36° /21° 0.3 mm 8
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Important Notice
Our weather forecast for Bexar County 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 Bexar County forecast closer to your planned date for the most up-to-date weather information.

Bexar County in September - FAQ

What are the expected maximum and minimum temperatures in Bexar County during September?
With daytime temperatures soaring above 38° and not dropping much below 24° at night, September in Bexar County is quite hot. Staying hydrated and avoiding peak sun hours is advisable.
How much rainfall should be expected in Bexar County during September?
Expect minimal rainfall in Bexar County during September, with a total of 15.7 mm over approximately 4 days. This minimal precipitation is unlikely to significantly impact plans.
What are the typical wind conditions in Bexar County during September?
The average wind speed in Bexar County during September is 21 km/h, suggesting breezy to windy conditions, depending on your activities.
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Location coordinates Where is Bexar County?

Get accurate weather forecasts for Bexar County, located at latitude 29.424 and longitude -98.494. Stay updated with localized weather information tailored for Bexar County.

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