Yosemite National Park is definitely worth a visit
Vast forests, blue lakes, towering sequoias, and majestic waterfalls hint at the beauty of Yosemite National Park—a true natural masterpiece.
Dallas Weather in September
Dallas in September averages 32°C (90°F) during the day and 21°C (70°F) at night. Keep in mind that quite a bit of rainfall is expected this month.
Rainfall in Dallas in September
Records from the past 30 years suggest around 6 days of rain, with 95 mm (3.7 in) average for the month. Although rain is not especially frequent, individual showers can still be quite heavy.
Temperature in Dallas in September
Temperatures in Dallas in September top out at 32°C (90°F) and drop to 21°C (70°F) overnight. If you're spending a lot of time outdoors, it helps to plan around the warmer part of the day. Nights are mild at around 21°C (70°F), which is comfortable for most people.
Sunshine in Dallas in September
Expect a lot of sunshine this month, with about 248 hours of sun. These sunny conditions add to the overall experience.Our weather planner can help you find worldwide destinations with pleasant weather during this period. April and November typically offer the best weather for Dallas.
Dallas Temperature in September
Min Temperature
21°C (70°F)
Max Temperature
32°C (90°F)
Chance of Rain
20%
Precipitation
95 mm (3.7 in)
Rainy days
6 days
Humidity
67%
Sunshine
248 hours
Percentage Sunshine
66%
Dallas Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Dallas - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Dallas typically drop from around 34°C (93°F) at the start of September to approximately 30°C (86°F) by the end. Nights are warm, with lows typically ranging from 18°C (64°F) to 24°C (75°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather records for Dallas in September
Browse day-by-day weather records for Dallas spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Dallas historical weather extremes in September
Based on 50 years of weather observations (1976-2026), these are the most extreme conditions recorded in Dallas.
- Dallas recorded its highest September temperature of 43°C (109°F) on September 4, 2000.
- The coldest night in September in Dallas was on September 30, 1984, with a minimum of 7°C (45°F).
Best Places in the United States of America in September
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in September →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Dallas in September
Warm but pleasant conditions in Dallas in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Expect heavy rainfall, so bring good rain protection and waterproof bags. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.
What To Do in Dallas in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming9/10 -
Cycling7/10 -
Walking7/10 -
Camping8/10 -
Outdoor sports7/10
Dallas 3-Day Forecast
More climate data for Dallas
Temperature Rainfall Sunshine Humidity
See the full Dallas climate overview or explore weather in the United States of America.
Popular in September
Where to go in September - average daytime high across popular destinations.
Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
Yosemite National Park is definitely worth a visit
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