Dallas weather in May
Long-run climate averages for Dallas, TX in May, plus what the forecast models say for the days ahead.
In May, Dallas averages 81°F by day and 64°F at night. It is the wettest month of the year here.
May in Dallas averages a daytime high of 81°F and an overnight low of 64°F, which reads as warm for this part of the world. It is also the wettest month, so build rain into any plan. Across the whole year Dallas sees roughly 37 inches of precipitation.
Climate averages tell you what to pack. They do not tell you what next Tuesday looks like - for that, see the live Dallas forecast with every model compared and how much they currently agree.
Dallas weather by month
what to expect in Dallas through the year, 1991-2020 averagesHere is Dallas's typical weather in each month: the average daytime high and overnight low in °F, how each month feels, and the wettest month marked. Use it to plan any trip to Dallas by season.
Bottom line: over the last 30 days the European model has been the most accurate forecast for Dallas, scoring 94/100 on our CheckWeather Score, ahead of the American at 76. See the full US accuracy scoreboard for exactly how every model is tested.
Common questions
How warm is Dallas in May?
Is May a good time to visit Dallas?
Does it rain a lot in Dallas in May?
Climate averages from ERA5 reanalysis. Model accuracy re-scored over a rolling 30 days. Page updated .