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