Mercedes Weather in September

Thinking of visiting Mercedes in September? Expect very high temperatures reaching 34°C (93°F) during the day, dropping to 23°C (73°F) at night, and be prepared for the wettest month of the year.

Rainfall in Mercedes in September

This month brings the peak rainfall of the year, with heavy showers. Be sure to have a poncho ready to manage the downpours. Looking at the last 30 years, the data shows about 13 days with rain, averaging 153 mm (6 in) for the month. Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.

Temperature in Mercedes in September

September in Mercedes brings typical temperatures with highs around 34°C (93°F) and lows of 23°C (73°F). If you're spending a lot of time outdoors, it helps to plan around the warmer part of the day. At 23°C (73°F) overnight, nights are warm enough to sit outside comfortably in light clothing.

Sunshine in Mercedes in September

With approximately 246 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.

September in Mercedes has its charm. However, if you're seeking pleasant, dry and sunny weather, our weather planner can help you explore other destinations in the world.

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 Mercedes's climate page.

Mercedes Temperature in September

Min Temperature 23°C (73°F)  

Max Temperature 34°C (93°F)  

Chance of Rain 44%  

Precipitation 153 mm (6 in)  

Rainy days 13 days  

Humidity 76% *  

Sunshine 246 hours *  

Percentage Sunshine 67% *  

* Data from: Brownsville, the United States of America (55 KM, 34 Miles).

What to Wear in Mercedes in September

Pack for serious heat in Mercedes in September. Prioritize clothing that breathes and doesn't cling or stick. Lightweight cotton, linen, and moisture-wicking fabrics are ideal. A wide hat provides welcome shade. It's going to pour! Pack a good poncho and prepare for very wet conditions. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Mercedes in September

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

Swimming

8/10

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 Mercedes's climate page.

More climate data for Mercedes

Temperature Rainfall Sunshine Humidity

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