Houston Weather in September
32.1°C high · 21.1°C low · 133 mm rain · 8h sun
Sep is a warm month in Houston — not peak season, but a good time to avoid crowds.
September at a glance
| Metric | Value |
|---|---|
| Average high | 32.1°C |
| Average low | 21.1°C |
| Rainfall | 133 mm |
| Sunshine | 8 hours/day |
| Daylight | 12.2 hours |
What to pack in September
Pack light, breathable clothes, plus a raincoat and umbrella for Houston in September.
Houston weather by month
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Frequently asked questions
What is the weather in Houston in September?
Highs of 32.1°C and lows of 21.1°C, with about 133 mm of rain and 8 hours of sunshine per day.
Is September a good time to visit Houston?
Sep is a warm month in Houston — not peak season, but a good time to avoid crowds.
What to do in Houston · Best time to visit Houston
Climate data: Open-Meteo Historical (ERA5), 1991–2020. CC BY 4.0.