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Dallas in May: Weather, Average temperature and Climate

Planning a trip and want to know what the weather in Dallas in May will be like? Take a look at our weather guide for Dallas, based on historical data.
Check flight prices to Dallas on Avionero:
May

Weather in Dallas in May 2025

Good Weather
Warm
☁️
Cloudy
Planning a trip to Dallas in May? You are in luck! The weather is generally good, with an average maximum temperature of +29°C and approximately 5 sunny days. Just be prepared for some rain, as there are usually around 9 rainy days and 137 mm of precipitation. Expect good weather and pack accordingly to enjoy the outdoors. Search flights in one click on Avionero.
Good to know:
  • May is usually the wettest month of the year in Dallas;

Average weather

☀️
+29°C
Avg. max. temperature
+5°C
Min.
+38°C
Max.
137 mm
Total precipitation
67%
Avg. humidity
4 m/s
Avg. wind
5 ☀️
Sunny Days
10 ⛅️
Cloudy
9 🌦
Rainy
Our opinion: Dallas has good weather in May.

Average temperature in Dallas in May

Here are the expected maximum, average and minimum temperatures in Dallas for May based on the historical data.
Last Year
Historical Data

Going from a maximum of +34°C during the day to a minimum of +12°C during the night, the temperature in May averages around +29°C.

The average maximum temperature goes up 32% by the end of the month, compared with the beginning of the month, from +25°C to +32°C.

Is Dallas warm or cold in May?

Dallas is typically warm in May.

Maximum temperatures go up compared to the previous month from +25°C to +29°C. The minimum temperature also goes up from +14°C to +19°C.

It’s generally warm, but pack a long-sleeve shirt for evenings.

Take a look at how May is compared to other months in Dallas:

Climate in Dallas in May

Dallas weather looks like this, on average, in May and the surrounding months.
AprilMayJune
Avg. temperature
+25°C+29°C+33°C
Min. temperature
+1°C+5°C+13°C
Max. temperature
+37°C+38°C+41°C
Rainfall
94 mm137 mm94 mm
Wind
4 m/s4 m/s3 m/s
Humidity
62%67%64%
Air pressure
1013 HPa1012 HPa1012 HPa
Sunny days
757
Cloudy days
9109
Rainy days
998
Snowy days
000

May weather is still as good as in April. It’s getting warmer as May arrives. The average maximum temperature goes up from +25°C to +29°C during the day. Prepare for more rain. Average rainfall goes from 94 mm to 137 mm. Humidity rises from 62% to 67%. The average wind speed doesn’t change much during May, staying around 4 m/s. The days becoming less sunny, going from 7 sunny days in April to 5 in May.

June brings much the same weather, it remains good.

Wind

Wind speed in Dallas in May based on historical data.
Last Year
Historical Data

The average wind speed is 3 m/s getting up to 6 m/s which is a medium breeze. You can feel it, especially getting out of the water.

The average wind speed in Dallas is gradually decreasing during May, going from 3 m/s to 2 m/s over the course of the month.

Rain

Amount of rainfall in mm during May in Dallas based on historical data.
Last Year
Historical Data
Typically, there is a 52% chance of rain on an average day in May, with total rainfall of approximately 144 mm. The maximum amount of rainfall per day is around 39 mm, which is moderate rain. May is a pretty wet month with over 16 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of galoshes.
May is one of the rainiest months in Dallas, here is a comparison with other months, total mm:
Dallas wettest month is May, where a typical day has a 29% chance of precipitation and 137 mm of rainfall per day. July, on the other hand, is the driest month with a mere 23% chance of precipitation and 43 mm of rainfall per day.

How was the weather last May in Dallas?

This is the weather in Dallas in May 2023:
1 May
☀️
+25°C
2 May
☁️
+27°C
3 May
☁️
+27°C
4 May
☁️
+28°C
5 May
☀️
+34°C
6 May
☀️
+31°C
7 May
☁️
+30°C
8 May
☁️
+31°C
9 May
☀️
+30°C
10 May
☁️
+27°C
11 May
🌫️
+30°C
12 May
🌫️
+31°C
13 May
☁️
+30°C
14 May
🌧️
+27°C
15 May
🌧️
+30°C
16 May
☁️
+26°C
17 May
☀️
+29°C
18 May
☁️
+31°C
19 May
☁️
+33°C
20 May
☁️
+26°C
21 May
☁️
+25°C
22 May
☀️
+28°C
23 May
☁️
+30°C
24 May
☁️
+30°C
25 May
☁️
+29°C
26 May
☁️
+31°C
27 May
☁️
+30°C
28 May
☁️
+30°C
29 May
☁️
+32°C
30 May
☁️
+30°C
31 May
☀️
+32°C
In May 2023 Dallas had 7 sunny days, 20 cloudy days, and 2 rainy days. The average maximum temperature was +29°C, with an absolute maximum of +34°C and a minimum of +25°C. The average humidity was 72%, with a maximum of 100% and a minimum of 33%. The average wind speed was 3 m/s, with a maximum of 14 m/s and a minimum of 0 m/s.
Are you planning a trip in May?

Climate Change over Years

This is how Dallas climate have been changing during last 43 years period.

The climate in Dallas in May has not changed much over the last 43 years.

The average temperature was the lowest in 1979 (+23°C) and the highest in 2012 (+27°C). The driest year was 2005 with only 460 mm of rainfall, and the wettest year was 2020 with 1551 mm.

FAQ

Frequently asked questions about the weather in Dallas in May:

Is May a good time to visit Dallas?

May is a really good time to go to Dallas. The weather is nice so plan your packing around outdoor activities and exploring. Check out other good time to visit Dallas.

Can you sunbathe in Dallas in May?

May is warm in Dallas. You may enjoy some beach or pool time in the day, but pack something a tad warmer for the evening.

Is Dallas rainy in May?

Dallas is often rainy in May. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.

Is it sunny in Dallas in May?

Usually, it’s not very sunny in Dallas in May, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.

Other cities in USA

Check out the weather for other cities in USA.

Monthly weather in Dallas

Source of the data

For this page, we’ve looked at the typical weather in Dallas, based on historical hourly weather data from January 1, 1979, to December 31, 2023.

For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.