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