Killeen Weather in September

September in Killeen brings very high temperatures around 33°C (91°F) during the day, dropping to 20°C (68°F) at night, with quite a bit of rainfall expected, averaging around 93 mm (3.7 in) for the month.

Rainfall in Killeen in September

This month experiences about 6 days of rain according to historical data, averaging 93 mm (3.7 in). Showers tend to be short but heavy rather than persistent drizzle. When it rains, it usually means it, but it doesn't last long.

Temperature in Killeen in September

Daytime temperatures in Killeen reach 33°C (91°F) in September, dropping to 20°C (68°F) at night. The hottest part of the day is usually in the afternoon, so lighter clothing can help you stay comfortable. 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 Killeen in September

With approximately 229 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.

Should you favor a climate that's both dry and comfortably warm, April and November typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.

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• January
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For a detailed overview over the year and the best time to visit the United States of America, check out our Killeen's climate page.

Killeen Temperature in September

Min Temperature 20°C (68°F)  

Max Temperature 33°C (91°F)  

Chance of Rain 20%  

Precipitation 93 mm (3.7 in)  

Rainy days 6 days  

Sunshine 229 hours *  

Percentage Sunshine *  

* Data from: Waco, the United States of America (73 KM, 45 Miles).

What to Wear in Killeen in September

Warm but pleasant conditions in Killeen 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 Killeen in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

9/10

Cycling

7/10

Walking

7/10

Camping

8/10

Outdoor sports

7/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Killeen's climate page.

More climate data for Killeen

Temperature Rainfall Sunshine

See the full Killeen climate overview or explore weather in the United States of America.