Dallas weather in September 2025

Expect daytime maximum temperatures of 88°F in Dallas, Texas in September and high heat and humidity based on long-term weather averages. There are 8 hours of sunshine per day on average with typically 3.3 inches of rainfall in the month.

  • 88°F maximum daytime temperature in September in Dallas88
    88°F max day temperature
  • 8 hours of sunshine per day
  • 7 days with some rainfall in September in Dallas7
    7 days with some rainfall
  • 68°F minimum night-time temperature in September in Dallas68
    68°F min night temperature
  • 12 hours of daylight per day in September in Dallas12
    12 hours of daylight per day
  • High heat & humidity in September in DallasH
    High heat & humidity
  • 3.3 inches monthly rainfall in September in Dallas3.3
    3.3 inches of monthly rainfall
  • UV (maximum) index 8 (Very High) in September in Dallas8
    8 (Very High) UV index

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The September weather guide for Texas (Dallas) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C)  |  Imperial (°F)

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How hot is it in Dallas in September?

Daytime temperatures usually reach 88°F in Dallas in September with high heat and humidity, falling to 68°F at night.

How sunny is it in Dallas in September?

There are normally 8 hours of bright sunshine each day in Dallas in September - that's 66% of daylight hours.

Does it rain in Dallas in September?

There are usually 7 days with some rain in Dallas in September and the average monthly rainfall is 3.3 inches.

What is the chance of a hurricane in Dallas in September?

On average less than 1 day in September in Dallas is likely to be affected by the passage of one or more tropical storms.

Dallas September sunrise & sunset times

Browse the sunrise and sunset times for Dallas in September 2025. Select a month to view Dallas sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 06:02 18:51
Monday, 15th September 2025 06:11 18:33
Tuesday, 30th September 2025 06:21 18:13

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