Houston Weather in May – Average Temperature and Rainfall
- High
- 29.0°
- Low
- 20.6°
- Rainfall
- 235 mm
- Rainy season
- 16d
- max
- 34.9°
- min
- 11.9°
May
- Early
- 27.8° 94.1 mm
- Mid
- 29.5° 62.7 mm
- Late
- 29.7° 77.8 mm
Summary
The climate figures for Houston are averaged from 2016–2025 observations (10 years). Annual rainfall averages about 1,920 mm.
The rainy season runs January–December. The wettest month is May with 234.6 mm across 16 rain days; the driest is February at just 104.3 mm.
The hottest month is August (average high 33°C) and the coolest is January (16.8°C).
The most comfortable time to visit Houston is February — less rain and milder heat.
Monthly averages
Common questions
Will it rain in Houston today?
No. The chance of rain today is only about 3%.
How hot is it in Houston today?
Between 14°C and 25°C, with a felt maximum of 26°C.
What is the weather in Houston tomorrow?
Tomorrow: overcast, 19–29°C, with a 4% chance of rain.