Dallas Weather in May – Average Temperature and Rainfall

High
28.4°
Low
18.5°
Rainfall
187 mm
Rainy season
13d
max
38.5°
min
8.0°

May

Early
27.2°
52.4 mm
Mid
28.5°
64.7 mm
Late
29.4°
69.8 mm

Summary

The climate figures for Dallas are averaged from 2016–2025 observations (10 years). Annual rainfall averages about 1,401 mm.

The rainy season runs February–November. The wettest month is May with 186.8 mm across 13 rain days; the driest is July at just 72.2 mm.

The hottest month is July (average high 35°C) and the coolest is January (13.2°C).

The most comfortable time to visit Dallas is July — less rain and milder heat.

Monthly averages

Common questions

Will it rain in Dallas today?
No. The chance of rain today is only about 1%.
How hot is it in Dallas today?
Between 11°C and 25°C, with a felt maximum of 23°C.
What is the weather in Dallas tomorrow?
Tomorrow: overcast, 16–24°C, with a 6% chance of rain.

Dallas