Dallas Weather in May
With daytime temperatures of 29°C (84°F) and nighttime lows of 18°C (64°F), May in Dallas brings high temperatures during the day. It is also the wettest month of the year, so pack an umbrella.
Rainfall in Dallas in May
This is the wettest month of the year, so having an umbrella ready is a smart choice. You can expect rain on around 11 days based on historical patterns, with 135 mm (5.3 in) average for the month. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.
Temperature in Dallas in May
Expect highs of 29°C (84°F) in Dallas in May, with nights dropping to around 18°C (64°F). This kind of day-to-night contrast is typical for this time of year. Nights drop to around 18°C (64°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.
Sunshine in Dallas in May
Expect a lot of sunshine this month, with about 260 hours of sun. These sunny conditions add to the overall experience.If you prefer dry days with pleasant temperatures, April and November typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Dallas's climate page.
Dallas Temperature in May
Min Temperature
18°C (64°F)
Max Temperature
29°C (84°F)
Chance of Rain
37%
Precipitation
135 mm (5.3 in)
Rainy days
11 days
Humidity
70%
Sunshine
260 hours
Percentage Sunshine
60%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Dallas typically rise from around 26°C (79°F) at the start of May to approximately 30°C (86°F) by the end. Nights are pleasant, with lows typically ranging from 15°C (59°F) to 21°C (70°F).
Average temperatures in May
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in May
Historical weather for Dallas in May
Browse day-by-day weather records for Dallas spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Dallas historical weather extremes in May
Based on 50 years of weather observations (1976-2026), these are the most extreme conditions recorded in Dallas.
- On May 30, 1985, temperatures climbed to 39°C (102°F), marking the warmest May day on record.
- Dallas registered its coldest May night on May 3, 2013, with temperatures dropping to 5°C (41°F).
Best Places in the United States of America in May
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in May →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Dallas in May
Warm but pleasant conditions in Dallas in May. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Expect heavy rainfall, so bring good rain protection and waterproof bags. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.What To Do in Dallas in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Dallas's climate page.
Temperature Rainfall Sunshine Humidity
See the full Dallas climate overview or explore weather in the United States of America.
