10 day forecast
Monthly forecast
Weather map
City or area
Find
Sign up
Log in
Go to comparison
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
1
+24
+17
1 September, sun
+24
+17
Feels like
+25
758 mmHg
63%
4.1
m/s
N
1 September, Sunday. day, 24°; night, 17°; partly cloudy
2
+24
+18
2 September, mon
+24
+18
Feels like
+24
758 mmHg
55%
4.5
m/s
N
2 September, Monday. day, 24°; night, 18°; clear
3
+24
+18
3 September, tue
+24
+18
Feels like
+24
758 mmHg
58%
4
m/s
NW
3 September, Tuesday. day, 24°; night, 18°; clear
4
+24
+17
4 September, wed
+24
+17
Feels like
+23
758 mmHg
61%
4.8
m/s
NW
4 September, Wednesday. day, 24°; night, 17°; partly cloudy
5
+24
+18
5 September, thu
+24
+18
Feels like
+24
758 mmHg
60%
4.3
m/s
SW
5 September, Thursday. day, 24°; night, 18°; clear
6
+24
+18
6 September, fri
+24
+18
Feels like
+25
757 mmHg
63%
4
m/s
NW
6 September, Friday. day, 24°; night, 18°; clear
7
+25
+19
7 September, sat
+25
+19
Feels like
+26
758 mmHg
58%
4.3
m/s
N
7 September, Saturday. day, 25°; night, 19°; clear
8
+25
+17
8 September, sun
+25
+17
Feels like
+25
758 mmHg
58%
4.4
m/s
NW
8 September, Sunday. day, 25°; night, 17°; clear
9
+26
+18
9 September, mon
+26
+18
Feels like
+27
759 mmHg
58%
3.9
m/s
NW
9 September, Monday. day, 26°; night, 18°; clear
10
+29
+19
10 September, tue
+29
+19
Feels like
+28
758 mmHg
43%
5.1
m/s
N
10 September, Tuesday. day, 29°; night, 19°; clear
11
+26
+17
11 September, wed
+26
+17
Feels like
+26
757 mmHg
50%
4.3
m/s
N
11 September, Wednesday. day, 26°; night, 17°; rain
12
+24
+16
12 September, thu
+24
+16
Feels like
+23
757 mmHg
52%
4.5
m/s
N
12 September, Thursday. day, 24°; night, 16°; clear
13
+24
+18
13 September, fri
+24
+18
Feels like
+24
756 mmHg
50%
3.4
m/s
N
13 September, Friday. day, 24°; night, 18°; clear
14
+24
+18
14 September, sat
+24
+18
Feels like
+24
756 mmHg
51%
3.5
m/s
SE
14 September, Saturday. day, 24°; night, 18°; partly cloudy
15
+23
+17
15 September, sun
+23
+17
Feels like
+23
757 mmHg
61%
3.5
m/s
N
15 September, Sunday. day, 23°; night, 17°; clear
16
+21
+17
16 September, mon
+21
+17
Feels like
+21
757 mmHg
66%
3.5
m/s
SW
16 September, Monday. day, 21°; night, 17°; rain
17
+22
+17
17 September, tue
+22
+17
Feels like
+22
757 mmHg
68%
3.2
m/s
SE
17 September, Tuesday. day, 22°; night, 17°; clear
18
+22
+16
18 September, wed
+22
+16
Feels like
+22
757 mmHg
64%
4
m/s
SW
18 September, Wednesday. day, 22°; night, 16°; partly cloudy
19
+21
+17
19 September, thu
+21
+17
Feels like
+21
757 mmHg
63%
4.1
m/s
SW
19 September, Thursday. day, 21°; night, 17°; clear
20
+21
+15
20 September, fri
+21
+15
Feels like
+20
757 mmHg
60%
4.3
m/s
N
20 September, Friday. day, 21°; night, 15°; clear
21
+21
+16
21 September, sat
+21
+16
Feels like
+20
757 mmHg
63%
4.1
m/s
SE
21 September, Saturday. day, 21°; night, 16°; partly cloudy
22
+20
+15
22 September, sun
+20
+15
Feels like
+20
758 mmHg
67%
3.7
m/s
SE
22 September, Sunday. day, 20°; night, 15°; rain
23
+20
+16
23 September, mon
+20
+16
Feels like
+20
758 mmHg
68%
4.1
m/s
S
23 September, Monday. day, 20°; night, 16°; rain
24
+20
+16
24 September, tue
+20
+16
Feels like
+19
758 mmHg
64%
4
m/s
SW
24 September, Tuesday. day, 20°; night, 16°; partly cloudy
25
+21
+15
25 September, wed
+21
+15
Feels like
+20
760 mmHg
68%
4.4
m/s
W
25 September, Wednesday. day, 21°; night, 15°; partly cloudy
26
+23
+16
26 September, thu
+23
+16
Feels like
+22
759 mmHg
64%
5.5
m/s
N
26 September, Thursday. day, 23°; night, 16°; partly cloudy
27
+23
+16
27 September, fri
+23
+16
Feels like
+22
757 mmHg
62%
5
m/s
N
27 September, Friday. day, 23°; night, 16°; clear
28
+21
+15
28 September, sat
+21
+15
Feels like
+20
756 mmHg
63%
5
m/s
S
28 September, Saturday. day, 21°; night, 15°; partly cloudy
29
+20
+15
29 September, sun
+20
+15
Feels like
+19
758 mmHg
64%
4.5
m/s
SE
29 September, Sunday. day, 20°; night, 15°; clear
30
+19
+14
30 September, mon
+19
+14
Feels like
+18
760 mmHg
67%
3.7
m/s
W
30 September, Monday. day, 19°; night, 14°; clear
1
+18
+14
1 October, tue
+18
+14
Feels like
+16
760 mmHg
66%
4
m/s
NW
1 October, Tuesday. day, 18°; night, 14°; partly cloudy
2
+18
+13
2 October, wed
+18
+13
Feels like
+17
759 mmHg
67%
3.7
m/s
NW
2 October, Wednesday. day, 18°; night, 13°; clear
3
+19
+14
3 October, thu
+19
+14
Feels like
+16
757 mmHg
57%
4.5
m/s
NE
3 October, Thursday. day, 19°; night, 14°; partly cloudy
4
+20
+15
4 October, fri
+20
+15
Feels like
+18
757 mmHg
56%
5.5
m/s
S
4 October, Friday. day, 20°; night, 15°; clear
5
+20
+15
5 October, sat
+20
+15
Feels like
+18
758 mmHg
56%
4.8
m/s
S
5 October, Saturday. day, 20°; night, 15°; clear
Average data for 10 years
Portland September
17
sunny days
4
days with precipitation
9
cloudy days
17 sunny days; 4 days with precipitation; 9 cloudy days;
61
%
air humidity
2.7
m/s
Wind
N
39
mm of precipitation
(5% of annual average)
air humidity 61%; 39 millimeters of precipitation (5% of annual average); Wind northerly 2.7 Meters per second
Weather graphs for September
Temperature
Precipitation chance, %
Humidity, %
Wind, m/s
Pressure, mmHg
N
N
NW
NW
SW
NW
N
NW
NW
N
N
N
N
SE
N
SW
SE
SW
SW
N
SE
SE
S
SW
W
N
N
S
SE
W
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
Seattle
Vancouver
Victoria
Aberdeen
Bellingham
Eugene
Bend
Abbotsford
Klamath Falls
Cities with similar weather in September
Budapest
Bishkek
Genoa
Cahul
Zagreb
Bilbao
Albena
Kabul
Urumqi
