The best month to visit Dallas Texas is generally April. This is when the temperatures are usually mild and comfortable, with average highs in the mid-70s and low-80s. April also brings some of the most beautiful blooms that you can find in Texas, from bluebonnets to Indian paintbrushes. However, any time between March and early June can make a great time to visit this vibrant city as there are plenty of exciting activities going on such as art festivals, sports events, music concerts, theater productions, and more! Additionally, springtime tends to have fewer crowds than summer months so you may be able to see all that Dallas has to offer without having to battle too many crowds.