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Dallas Weather in May

Typical May weather in Dallas, United States, based on 2006–2025 climate averages.

In May, Dallas averages a high of 28.3°C (82.9°F) and a low of 18.7°C (65.7°F), with about 12 rainy days (157 mm of rain) and 10 hours of sunshine a day.

Avg high

28.3°C (82.9°F)

Avg low

18.7°C (65.7°F)

Rainfall

157 mm (6.2 in)

Rainy days

12 days

Sunshine

10 h / day

Humidity

69%

May vs the rest of the year

Here is how every month in Dallas stacks up against May — the wettest month for rain.

MonthAvg highvs MayRainRainy days
January13.4°C (56.1°F)−14.9°C (−26.8°F)72 mm6
February15.5°C (59.9°F)−12.8°C (−23°F)80 mm8
March20.8°C (69.4°F)−7.5°C (−13.5°F)110 mm10
April24.4°C (75.9°F)−3.9°C (−7°F)125 mm10
May28.3°C (82.9°F)—157 mm12
June32.7°C (90.9°F)+4.4°C (+7.9°F)106 mm9
July34.8°C (94.6°F)+6.5°C (+11.7°F)59 mm8
August35.3°C (95.5°F)+7°C (+12.6°F)72 mm7
September31.4°C (88.5°F)+3.1°C (+5.6°F)87 mm7
October26°C (78.8°F)−2.3°C (−4.1°F)118 mm7
November19.5°C (67.1°F)−8.8°C (−15.8°F)93 mm7
December15°C (59°F)−13.3°C (−23.9°F)81 mm8

What May feels like in Dallas

May is late spring in Dallas. Expect proper heat in the afternoon — slow down between noon and four. Evenings bring a clear drop in temperature, and nights stay mild. The air carries some moisture, so hot spells feel a little sticky.

Rain in Dallas in May

Expect a mix of dry and wet days, with rain about one day in 3. Rain tends to come in heavy bursts: about 13.1 mm (0.5 in) on an average rainy day. The yearly figure is similar, around 11.7 mm per wet day. May is Dallas's wettest month of the year.

Daylight and sunshine in May

Mid-month, Dallas gets 13 h 49 min of daylight, from sunrise near 6:29 am to sunset near 8:18 pm. Days are getting longer: 52 min more daylight than in mid-April. About 72% of daylight hours are sunny; in short, there are plenty of bright spells.

How May compares to the rest of the year

May is the 5th warmest month of the year in Dallas. Afternoons run 3.9°C (7°F) warmer than in April, with 32 mm more rain. The warm-up continues into June. The next month's average high: 32.7°C (90.9°F).

Who May suits

  • Sightseeing: a good fit — daytime temperatures are fine for walking around.
  • Parks & outdoor: less ideal — afternoons are too warm to linger outside.

Tips for visiting Dallas in May

Versatile Layers

Mornings and evenings are cooler than midday, so dress in layers.

Rain Protection

A packable rain jacket saves the day on showery afternoons.

Sun Protection

Protect yourself from strong sun: hat, SPF and plenty of water.

Quick questions

How warm is Dallas in May?

Expect around 28.3°C (82.9°F) in the afternoon and 18.7°C (65.7°F) at night, which most visitors would call hot.

Does it rain a lot in Dallas in May?

Yes, fairly — rain falls about one day in 3 and totals about 157 mm, so an umbrella is worth carrying.

What should I wear in Dallas in May?

The numbers point to versatile layers, rain protection and sun protection. There is little need to change for the evening.

Is May or June better for visiting Dallas?

May scores better on our climate ranking (#9 of 12 vs #12), rated Good against Fair. June is warmer and has fewer rainy days.

Is May a good time to visit Dallas?

Good

Good — warm to hot days, frequent rain (about 12 rainy days), plenty of sunshine (10 h a day). Within Dallas's own year, May ranks #9 of 12.

May in other United States cities

Drier places in May

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Monthly averages from 20 years of Open-Meteo history (2006–2025), not a forecast — see all 12 months in Dallas weather by month.