Allen Weather in September
September in Allen averages 32°C (90°F) during the day and 20°C (68°F) at night. Quite a bit of rainfall is typical this month, with around 79 mm (3.1 in) on average. An umbrella is a good idea.
Rainfall in Allen in September
Records from the past 30 years suggest around 6 days of rain, with 79 mm (3.1 in) average for the month. When rain does fall this month, it tends to come down hard. The low number of rain days makes each shower more significant.
Temperature in Allen in September
September in Allen brings very high temperatures, with highs of 32°C (90°F) and nights around 20°C (68°F). For most visitors, the main thing to prepare for is the heat during the day. Nights drop to around 20°C (68°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.
Sunshine in Allen in September
Enjoy a sunny month with about 248 hours of sunshine, the clear skies make Allen even more beautiful.Our weather planner can help you find worldwide destinations with pleasant weather during this period. March, April, May, October and November typically offer the best weather for Allen.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Allen's climate page.
Allen Temperature in September
Min Temperature
20°C (68°F)
Max Temperature
32°C (90°F)
Chance of Rain
21%
Precipitation
79 mm (3.1 in)
Rainy days
6 days
Humidity
67% *
Sunshine
248 hours *
Percentage Sunshine
66% *
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 →
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What to Wear in Allen in September
Warm weather calls for comfortable, breathable clothing in September. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Rain is likely on several days, so bring a good rain jacket. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Allen in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Allen's climate page.
Temperature Rainfall Sunshine Humidity
See the full Allen climate overview or explore weather in the United States of America.
