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September weather forecast in Portland
30 days
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
30 days
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun
Sunday
Mon
Monday
Tue
Tuesday
Wed
Wednesday
Thu
Thursday
Fri
Friday
Sat
Saturday
31
+21
+18
31 August, sun
+21
+18
Feels like
+21
757 mmHg
74%
4.8
m/s
W
+20
31 August, Sunday. day, 21°; night, 18°; clear
1
+21
+18
1 September, mon
+21
+18
Feels like
+21
757 mmHg
75%
4.4
m/s
SW
+19
1 September, Monday. day, 21°; night, 18°; clear
2
+21
+18
2 September, tue
+21
+18
Feels like
+21
756 mmHg
80%
5
m/s
S
+19
2 September, Tuesday. day, 21°; night, 18°; rain
3
+21
+17
3 September, wed
+21
+17
Feels like
+20
756 mmHg
75%
5.5
m/s
SW
+19
3 September, Wednesday. day, 21°; night, 17°; clear
4
+21
+17
4 September, thu
+21
+17
Feels like
+20
757 mmHg
74%
6
m/s
S
+19
4 September, Thursday. day, 21°; night, 17°; clear
5
+20
+17
5 September, fri
+20
+17
Feels like
+18
759 mmHg
75%
6.5
m/s
SW
+18
5 September, Friday. day, 20°; night, 17°; partly cloudy
6
+20
+17
6 September, sat
+20
+17
Feels like
+19
757 mmHg
80%
5.3
m/s
S
+18
6 September, Saturday. day, 20°; night, 17°; clear
7
+20
+17
7 September, sun
+20
+17
Feels like
+20
756 mmHg
77%
5.5
m/s
W
+19
7 September, Sunday. day, 20°; night, 17°; partly cloudy
8
+20
+16
8 September, mon
+20
+16
Feels like
+19
757 mmHg
75%
5.5
m/s
S
+18
8 September, Monday. day, 20°; night, 16°; partly cloudy
9
+19
+16
9 September, tue
+19
+16
Feels like
+18
758 mmHg
77%
5.4
m/s
N
+18
9 September, Tuesday. day, 19°; night, 16°; rain
10
+19
+15
10 September, wed
+19
+15
Feels like
+18
758 mmHg
75%
6
m/s
NW
+18
10 September, Wednesday. day, 19°; night, 15°; partly cloudy
11
+19
+16
11 September, thu
+19
+16
Feels like
+17
758 mmHg
75%
5.3
m/s
SW
+18
11 September, Thursday. day, 19°; night, 16°; clear
12
+18
+15
12 September, fri
+18
+15
Feels like
+17
756 mmHg
79%
5.8
m/s
S
+17
12 September, Friday. day, 18°; night, 15°; rain
13
+19
+16
13 September, sat
+19
+16
Feels like
+19
756 mmHg
75%
5
m/s
SW
+18
13 September, Saturday. day, 19°; night, 16°; partly cloudy
14
+19
+16
14 September, sun
+19
+16
Feels like
+18
757 mmHg
77%
5.3
m/s
W
+18
14 September, Sunday. day, 19°; night, 16°; clear
15
+18
+15
15 September, mon
+18
+15
Feels like
+16
759 mmHg
73%
6
m/s
W
+17
15 September, Monday. day, 18°; night, 15°; partly cloudy
16
+17
+14
16 September, tue
+17
+14
Feels like
+15
761 mmHg
73%
5.4
m/s
W
+17
16 September, Tuesday. day, 17°; night, 14°; rain
17
+17
+14
17 September, wed
+17
+14
Feels like
+16
760 mmHg
74%
5
m/s
SW
+17
17 September, Wednesday. day, 17°; night, 14°; clear
18
+17
+14
18 September, thu
+17
+14
Feels like
+14
760 mmHg
73%
6.5
m/s
SW
+17
18 September, Thursday. day, 17°; night, 14°; partly cloudy
19
+18
+15
19 September, fri
+18
+15
Feels like
+15
760 mmHg
73%
7
m/s
W
+17
19 September, Friday. day, 18°; night, 15°; clear
20
+18
+14
20 September, sat
+18
+14
Feels like
+15
760 mmHg
74%
5.9
m/s
SE
+17
20 September, Saturday. day, 18°; night, 14°; clear
21
+19
+15
21 September, sun
+19
+15
Feels like
+17
758 mmHg
75%
5.5
m/s
W
+17
21 September, Sunday. day, 19°; night, 15°; clear
22
+18
+15
22 September, mon
+18
+15
Feels like
+17
760 mmHg
73%
4.6
m/s
W
+17
22 September, Monday. day, 18°; night, 15°; clear
23
+18
+16
23 September, tue
+18
+16
Feels like
+17
760 mmHg
73%
5
m/s
W
+17
23 September, Tuesday. day, 18°; night, 16°; clear
24
+17
+15
24 September, wed
+17
+15
Feels like
+15
761 mmHg
68%
5
m/s
N
+17
24 September, Wednesday. day, 17°; night, 15°; partly cloudy
25
+17
+13
25 September, thu
+17
+13
Feels like
+14
762 mmHg
69%
5.5
m/s
NW
+16
25 September, Thursday. day, 17°; night, 13°; clear
26
+18
+14
26 September, fri
+18
+14
Feels like
+15
760 mmHg
79%
6.4
m/s
SE
+17
26 September, Friday. day, 18°; night, 14°; clear
27
+19
+16
27 September, sat
+19
+16
Feels like
+17
757 mmHg
80%
6.3
m/s
S
+17
27 September, Saturday. day, 19°; night, 16°; rain
28
+16
+15
28 September, sun
+16
+15
Feels like
+14
756 mmHg
81%
6
m/s
SE
+17
28 September, Sunday. day, 16°; night, 15°; rain
29
+16
+14
29 September, mon
+16
+14
Feels like
+13
757 mmHg
82%
6.9
m/s
NE
+16
29 September, Monday. day, 16°; night, 14°; rain
30
+15
+13
30 September, tue
+15
+13
Feels like
+12
757 mmHg
79%
6
m/s
N
+16
30 September, Tuesday. day, 15°; night, 13°; clear
1
+15
+12
1 October, wed
+15
+12
Feels like
+12
758 mmHg
75%
6.4
m/s
N
+16
1 October, Wednesday. day, 15°; night, 12°; partly cloudy
2
+15
+12
2 October, thu
+15
+12
Feels like
+12
760 mmHg
79%
6.4
m/s
NE
+15
2 October, Thursday. day, 15°; night, 12°; overcast
3
+15
+13
3 October, fri
+15
+13
Feels like
+12
758 mmHg
81%
6.5
m/s
NE
+15
3 October, Friday. day, 15°; night, 13°; clear
4
+15
+13
4 October, sat
+15
+13
Feels like
+12
758 mmHg
75%
6
m/s
N
+15
4 October, Saturday. day, 15°; night, 13°; rain
Average data for 10 years
Portland September
15
sunny days
7
days with precipitation
8
cloudy days
15 sunny days; 7 days with precipitation; 8 cloudy days;
75
%
air humidity
3.5
m/s
Wind
W
69
mm of precipitation
(8% of annual average)
+18
°C
Water temperature
air humidity 75%; 69 millimeters of precipitation (8% of annual average); Wind westerly 3.5 Meters per second; Water temperature +18°
Weather graphs for September
Temperature
Water temperature
Precipitation chance, %
Humidity, %
Wind, m/s
Pressure, mmHg
SW
S
SW
S
SW
S
W
S
N
NW
SW
S
SW
W
W
W
SW
SW
W
SE
W
W
W
N
NW
SE
S
SE
NE
N
1
Average data for 10 years
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Daytime temperature
Night-time temperature
Cities near you
Boston
Montreal
Colchester
Quebec
Anjou
Laval
Nantucket
Bangor
Berlin
Cities with similar weather in September
Toronto
Vancouver
Seattle
Balkhash
Montreal
Bruges
San Sebastian
Rijeka
Brest
