Donna Weather in September

During September, Donna experiences very high daytime temperatures of 34°C (93°F) and cooler nights around 23°C (73°F). As the wettest month of the year, expect frequent rainfall.

Rainfall in Donna in September

With this being the rainiest month, having an umbrella is essential to avoid unexpected rain. Rain is expected on roughly 13 days, totalling around 131 mm (5.2 in) for the month. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.

Temperature in Donna in September

Temperatures in Donna in September top out at 34°C (93°F) and drop to 23°C (73°F) overnight. The hottest part of the day is usually in the afternoon, so lighter clothing can help you stay comfortable. At 23°C (73°F) overnight, it stays warm after dark. Light, breathable clothing and good airflow in your room make a noticeable difference.

Sunshine in Donna in September

Expect a lot of sunshine this month, with about 246 hours of sun. These sunny conditions add to the overall experience.

September in Donna has its charm, but if you're looking for destinations with pleasant temperatures and sunny skies, our weather planner can help you explore other options in the world.

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Check the conditions for any month of the year.

• January
• February
• March
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• May
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• 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 Donna's climate page.

Donna Temperature in September

Min Temperature 23°C (73°F)  

Max Temperature 34°C (93°F)  

Chance of Rain 43%  

Precipitation 131 mm (5.2 in)  

Rainy days 13 days  

Humidity 76% *  

Sunshine 246 hours *  

Percentage Sunshine 67% *  

* Data from: Brownsville, the United States of America (68 KM, 42 Miles).

What to Wear in Donna in September

Get ready for hot weather in September! Lightweight, breathable fabrics are your best friend during this month. Cotton and linen shirts, shorts, sundresses, and sandals will keep you comfortable. Light colors help reflect the heat, avoid wearing black. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.

What To Do in Donna 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

6/10

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 Donna's climate page.

More climate data for Donna

Temperature Rainfall Sunshine Humidity

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