Average data for 10 years
1 September
Sunday
+21°
+18°
2 September
Monday
+21°
+18°
3 September
Tuesday
+21°
+17°
4 September
Wednesday
+21°
+17°
5 September
Thursday
+20°
+17°
6 September
Friday
+20°
+17°
7 September
Saturday
+20°
+17°
8 September
Sunday
+20°
+16°
9 September
Monday
+19°
+16°
10 September
Tuesday
+19°
+15°
11 September
Wednesday
+19°
+16°
12 September
Thursday
+18°
+15°
13 September
Friday
+19°
+16°
14 September
Saturday
+19°
+16°
15 September
Sunday
+18°
+15°
16 September
Monday
+17°
+14°
17 September
Tuesday
+17°
+14°
18 September
Wednesday
+17°
+14°
19 September
Thursday
+18°
+15°
20 September
Friday
+18°
+14°
21 September
Saturday
+19°
+15°
22 September
Sunday
+18°
+15°
23 September
Monday
+18°
+16°
24 September
Tuesday
+17°
+15°
25 September
Wednesday
+17°
+13°
26 September
Thursday
+18°
+14°
27 September
Friday
+19°
+16°
28 September
Saturday
+16°
+15°
29 September
Sunday
+16°
+14°
30 September
Monday
+15°
+13°
Cities with similar weather in September
Canada
Toronto
Canada
Vancouver
United States
Seattle
Kazakhstan
Balkhash
Canada
Montreal
September in Portland is the sunniest month of the year. In September, the weather in Portland is typically warm. Average daily high temperature in September is about 19 degrees above zero. On average, Portland has 15 sunny, 8 partly cloudy, and 7 rainy days in September. The rains are usually heavy.