Dallas weather in September

Long-run climate averages for Dallas, TX in September, plus what the forecast models say for the days ahead.

September at a glance

In September, Dallas averages 91°F by day and 72°F at night. The wettest month is usually May.

September in Dallas averages a daytime high of 91°F and an overnight low of 72°F, which reads as hot for this part of the world. Across the whole year Dallas sees roughly 54 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

Here 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.

Jan

56°

38°

Cool

Feb

64°

45°

Mild

Mar

70°

51°

Mild

Apr

75°

57°

Warm

May

83°

66°

Warm

Wettest

Jun

91°

73°

Hot

Jul

95°

77°

Hot

Aug

101°

81°

Hot

Sep

91°

72°

Hot

Oct

83°

63°

Warm

Nov

68°

50°

Mild

Dec

61°

44°

Mild

Common questions

How warm is Dallas in September?

Dallas averages a daytime high of 91°F in September, with overnight lows around 72°F. These are long-run climate averages, not a forecast — for the actual days ahead see the live model comparison.

Is September a good time to visit Dallas?

The most comfortable time to visit Dallas is usually February, March, April and November, when daytime highs sit in the pleasant 60-78°F range and the heaviest May rain is behind you.

Does it rain a lot in Dallas in September?

The wettest month in Dallas is usually May. Across the year the city sees roughly 54 inches of precipitation.

Dallas in other months

January February March April May June July August October November December

More about Dallas

Dallas live forecast Best time to visit Dallas Which forecast is most accurate in United States?