Houston Weather in September
United States · 30-year monthly averages
🤔 Fair time to visit
September in Houston is hot, with average daytime highs around 32°C (89°F) and nighttime lows near 23°C (73°F). Expect roughly 146mm of precipitation spread over about 8 rainy days, and this is one of the wetter months.
Avg high
32°C
89°F
Avg low
23°C
73°F
Rainfall
146mm
rainy
Rainy days
8
days with ≥1mm
🎒 What to pack
- breathable summer clothing
- sunscreen, hat and sunglasses
- refillable water bottle
- compact umbrella or rain jacket
September vs the rest of the year
FAQ
- How hot is Houston in September?
- September in Houston is hot, with average daytime highs around 32°C (89°F) and nighttime lows near 23°C (73°F). Expect roughly 146mm of precipitation spread over about 8 rainy days, and this is one of the wetter months.
- Does it rain a lot in Houston in September?
- Houston sees around 146mm of precipitation in September on average — rainy by global standards.
- Is September a good time to visit Houston?
- September is a workable month to visit Houston, but expect some weather trade-offs.