Monthly climate guide
Dallas weather in May
With highs near 29°C (83°F) and lows around 17°C (63°F), May feels hot in Dallas. Rainfall averages about 139 mm (wet) and the sky is a mix of sun and cloud. Daytime highs are 4°C warmer than April and 5°C cooler than June.
What stands out in May
- Humidity near 72% makes 29°C feel stickier than it sounds.
- Rain is above Dallas's usual level, by about 77%.
- Just 290 km apart, but Dallas runs about 2°C cooler than Austin this month.
- It warms up quickly from here: by June highs are about 5°C higher.
It's usually the wettest month of the year.
Avg high
29°C
83°F
Avg low
17°C
63°F
Rainfall
139 mm
wet
Humidity
72%
relative
Sky
54%
cloud · a mix of sun and cloud
Dallas weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 13°C / 55°F | 1°C / 34°F | 59 mm | 73% | 49% |
| February | 15°C / 60°F | 3°C / 38°F | 66 mm | 75% | 58% |
| March | 21°C / 69°F | 8°C / 47°F | 75 mm | 73% | 55% |
| April | 25°C / 76°F | 12°C / 54°F | 91 mm | 72% | 53% |
| May | 29°C / 83°F | 17°C / 63°F | 139 mm | 72% | 54% |
| June | 33°C / 92°F | 22°C / 72°F | 96 mm | 69% | 42% |
| July | 36°C / 97°F | 24°C / 76°F | 47 mm | 60% | 41% |
| August | 37°C / 98°F | 25°C / 76°F | 63 mm | 57% | 38% |
| September | 33°C / 91°F | 21°C / 70°F | 66 mm | 61% | 38% |
| October | 26°C / 80°F | 14°C / 57°F | 107 mm | 66% | 38% |
| November | 19°C / 67°F | 7°C / 45°F | 62 mm | 71% | 46% |
| December | 14°C / 57°F | 3°C / 37°F | 70 mm | 74% | 57% |
What to pack for May
- Light, breathable clothing (cotton or linen)
- A sun hat and high-SPF sunscreen
- A refillable water bottle
- An extra layer — evenings are noticeably cooler than afternoons
- A compact umbrella or packable rain jacket
- Water-resistant shoes
Is May a good time to visit Dallas?
Compare the months in the chart above to find your ideal window.
Best time to visit Dallas →Other United States cities in May
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Dallas weather in May. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/usa/dallas/may
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Dallas in May: quick answers
Is May a good time to visit Dallas?
May is one of the wetter months in Dallas, with about 139 mm of rain. You can still go: pack a rain jacket and keep plans flexible.
How warm is Dallas in May?
Average highs are about 29°C (83°F) and average lows about 17°C (63°F), based on 10 years of daily data.
Does it rain a lot in Dallas in May?
Dallas typically gets around 139 mm of rain in May — wet. It's usually the wettest month of the year.
Figures are long-term averages for the area around Dallas (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.