Average data for 10 years
1 September
Sunday
+24°
+18°
2 September
Monday
+23°
+16°
3 September
Tuesday
+23°
+16°
4 September
Wednesday
+23°
+17°
5 September
Thursday
+24°
+18°
6 September
Friday
+24°
+17°
7 September
Saturday
+23°
+17°
8 September
Sunday
+23°
+17°
9 September
Monday
+24°
+18°
10 September
Tuesday
+23°
+17°
11 September
Wednesday
+21°
+15°
12 September
Thursday
+20°
+14°
13 September
Friday
+20°
+15°
14 September
Saturday
+20°
+14°
15 September
Sunday
+21°
+15°
16 September
Monday
+21°
+16°
17 September
Tuesday
+22°
+16°
18 September
Wednesday
+23°
+17°
19 September
Thursday
+23°
+17°
20 September
Friday
+21°
+15°
21 September
Saturday
+21°
+16°
22 September
Sunday
+23°
+18°
23 September
Monday
+23°
+17°
24 September
Tuesday
+23°
+18°
25 September
Wednesday
+25°
+19°
26 September
Thursday
+25°
+20°
27 September
Friday
+24°
+18°
28 September
Saturday
+20°
+15°
29 September
Sunday
+20°
+15°
30 September
Monday
+22°
+17°
Cities with similar weather in September
Portugal
Porto
France
Marseilles
France
Cannes
France
Bordeaux
United States
Denver
September in Santa Rosa is the warmest month of the year. In September, the weather in Santa Rosa is typically warm. Average daily high temperature in September is about 22 degrees above zero. On average, Santa Rosa has 30 sunny days in September. September as well as June, July, and August is considered the most comfortable time to visit Santa Rosa.