Average data for 10 years
1 September
Sunday
+31°
+28°
2 September
Monday
+32°
+28°
3 September
Tuesday
+32°
+28°
4 September
Wednesday
+30°
+27°
5 September
Thursday
+31°
+27°
6 September
Friday
+31°
+27°
7 September
Saturday
+30°
+27°
8 September
Sunday
+31°
+27°
9 September
Monday
+30°
+27°
10 September
today
+31°
+27°
11 September
tomorrow
+30°
+26°
12 September
Thursday
+31°
+27°
13 September
Friday
+31°
+27°
14 September
Saturday
+30°
+27°
15 September
Sunday
+29°
+26°
16 September
Monday
+30°
+26°
17 September
Tuesday
+30°
+27°
18 September
Wednesday
+31°
+27°
19 September
Thursday
+31°
+27°
20 September
Friday
+30°
+26°
21 September
Saturday
+30°
+26°
22 September
Sunday
+29°
+25°
23 September
Monday
+29°
+26°
24 September
Tuesday
+30°
+26°
25 September
Wednesday
+30°
+26°
26 September
Thursday
+29°
+26°
27 September
Friday
+29°
+25°
28 September
Saturday
+30°
+26°
29 September
Sunday
+30°
+26°
30 September
Monday
+30°
+26°
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September in Brownsville is the rainiest month of the year. In September, the weather in Brownsville is typically hot. Average daily high temperature in September is about 30 degrees above zero. On average, Brownsville has 14 rainy, 13 sunny, and 3 partly cloudy days in September. The rains are usually heavy. September as well as July is considered the most uncomfortable time to visit Brownsville.