What is "second summer?"
It refers to a return of summer-like conditions, including high temperatures and humidity, after a brief period of cooler weather.
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Weather / Houston Weather
Houston Weather: Second Summer Returns in September 2025
Houston is experiencing a "second summer" with hot and humid conditions expected to persist throughout September 2025. Temperatures are rising, and residents should be prepared for ozone alerts and potential air quality issues.
Key Insights
- Temperatures in the low to mid-90s are expected to continue.
- High humidity will make conditions feel even hotter.
- There is a low chance of isolated showers, mainly south of I-10.
- An ozone watch is in effect due to sunny skies, warm temperatures, and light winds.
- A weak low-pressure system may develop in the Gulf by the end of the week.
In-Depth Analysis
Houston's "false fall" has ended, with summer conditions making a comeback. High pressure is dominating the weather pattern, leading to rising temperatures and humidity. While a few isolated showers are possible, most areas will remain dry. The combination of heat and light winds may lead to ozone action days, requiring residents to limit outdoor activities during the afternoon. Although it is nearly the peak of hurricane season, the Atlantic Basin remains relatively quiet, but a weak low-pressure system could form in the Gulf of Mexico by the end of the week. Residents should review their hurricane preparedness plans.
FAQ
What is an ozone watch?
It is an alert issued when conditions are favorable for ground-level ozone formation, which can cause respiratory issues. People sensitive to air quality should limit outdoor activities.
What should I do during an ozone watch?
Limit prolonged outdoor activities, especially during the afternoon when ozone levels are typically highest.
Takeaways
- Expect hot and humid conditions to continue in Houston.
- Stay informed about daily forecasts and air quality alerts.
- Limit outdoor activities during ozone action days.
- Review hurricane preparedness plans, even though the Atlantic Basin is currently quiet.
Discussion
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Sources
Disclaimer
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