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Monthly 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 September
+21
+18
1 September, sun
+21
+18
Feels like
+21
757 mmHg
75%
4.4
m/s
SW
+19
1 September, Sunday. day, 21°; night, 18°; clear
2
+21
+18
2 September, mon
+21
+18
Feels like
+21
756 mmHg
80%
5
m/s
S
+19
2 September, Monday. day, 21°; night, 18°; rain
3
+21
+17
3 September, tue
+21
+17
Feels like
+20
756 mmHg
75%
5.5
m/s
SW
+19
3 September, Tuesday. day, 21°; night, 17°; clear
4
+21
+17
4 September, wed
+21
+17
Feels like
+20
757 mmHg
74%
6
m/s
S
+19
4 September, Wednesday. day, 21°; night, 17°; clear
5
+20
+17
5 September, thu
+20
+17
Feels like
+18
759 mmHg
75%
6.5
m/s
SW
+18
5 September, Thursday. day, 20°; night, 17°; partly cloudy
6
September
+20
+14
6 September, fri
+20
+14
Feels like
+18
764 mmHg
84%
4.5
m/s
E
+18
Climate normal
+20
+17
6 September, Friday. day, 20°; night, 14°; clear
7
+23
+13
7 September, sat
+23
+13
Feels like
+18
756 mmHg
74%
4.9
m/s
S
+19
Climate normal
+20
+17
7 September, Saturday. day, 23°; night, 13°; partly cloudy
8
+20
+11
8 September, sun
+20
+11
Feels like
+13
758 mmHg
52%
6.4
m/s
W
+19
Climate normal
+20
+16
8 September, Sunday. day, 20°; night, 11°; mostly clear
9
+22
+13
9 September, mon
+22
+13
Feels like
+17
760 mmHg
54%
4.3
m/s
W
+19
Climate normal
+19
+16
9 September, Monday. day, 22°; night, 13°; clear
10
+24
+12
10 September, tue
+24
+12
Feels like
+19
763 mmHg
53%
3.7
m/s
W
+19
Climate normal
+19
+15
10 September, Tuesday. day, 24°; night, 12°; clear
11
+24
+14
11 September, wed
+24
+14
Feels like
+18
765 mmHg
59%
3.4
m/s
S
+18
Climate normal
+19
+16
11 September, Wednesday. day, 24°; night, 14°; mostly clear
12
+25
+15
12 September, thu
+25
+15
Feels like
+20
765 mmHg
66%
3.7
m/s
S
+19
Climate normal
+18
+15
12 September, Thursday. day, 25°; night, 15°; mostly clear
13
+26
+15
13 September, fri
+26
+15
Feels like
+21
765 mmHg
64%
3.7
m/s
SE
+19
Climate normal
+19
+16
13 September, Friday. day, 26°; night, 15°; mostly clear
14
+25
+16
14 September, sat
+25
+16
Feels like
+21
764 mmHg
68%
3.9
m/s
SE
+19
Climate normal
+19
+16
14 September, Saturday. day, 25°; night, 16°; mostly clear
15
+22
+14
15 September, sun
+22
+14
Feels like
+16
763 mmHg
66%
5
m/s
SE
Climate normal
+18
+15
15 September, Sunday. day, 22°; night, 14°; partly cloudy
16
+20
+14
16 September, mon
+20
+14
Feels like
+15
762 mmHg
70%
5.7
m/s
E
Climate normal
+17
+14
16 September, Monday. day, 20°; night, 14°; partly cloudy
17
+20
+15
17 September, tue
+20
+15
Feels like
+14
759 mmHg
76%
6.2
m/s
NW
Climate normal
+17
+14
17 September, Tuesday. day, 20°; night, 15°; overcast
18
+22
+18
18 September, wed
+22
+18
Feels like
+18
758 mmHg
75%
5
m/s
S
Climate normal
+17
+14
18 September, Wednesday. day, 22°; night, 18°; clear
19
+23
+19
19 September, thu
+23
+19
Feels like
+20
753 mmHg
74%
4.1
m/s
SW
Climate normal
+18
+15
19 September, Thursday. day, 23°; night, 19°; clear
20
+25
+20
20 September, fri
+25
+20
Feels like
+23
750 mmHg
77%
4.2
m/s
SW
Climate normal
+18
+14
20 September, Friday. day, 25°; night, 20°; clear
21
+25
+20
21 September, sat
+25
+20
Feels like
+21
748 mmHg
74%
4.9
m/s
S
Climate normal
+19
+15
21 September, Saturday. day, 25°; night, 20°; clear
22
+23
+20
22 September, sun
+23
+20
Feels like
+18
755 mmHg
66%
6.9
m/s
SW
Climate normal
+18
+15
22 September, Sunday. day, 23°; night, 20°; mostly clear
23
+22
+18
23 September, mon
+22
+18
Feels like
+19
755 mmHg
68%
5.7
m/s
SW
Climate normal
+18
+16
23 September, Monday. day, 22°; night, 18°; partly cloudy
24
+18
+13
24 September, tue
+18
+13
Feels like
+12
757 mmHg
78%
7
m/s
N
Climate normal
+17
+15
24 September, Tuesday. day, 18°; night, 13°; mostly clear
25
+14
+13
25 September, wed
+14
+13
Feels like
+9
756 mmHg
94%
6
m/s
N
Climate normal
+17
+13
25 September, Wednesday. day, 14°; night, 13°; partly cloudy
26
+16
+13
26 September, thu
+16
+13
Feels like
+8
758 mmHg
83%
11.1
m/s
NE
Climate normal
+18
+14
26 September, Thursday. day, 16°; night, 13°; rain
27
+14
+13
27 September, fri
+14
+13
Feels like
+6
757 mmHg
74%
9.1
m/s
N
Climate normal
+19
+16
27 September, Friday. day, 14°; night, 13°; light rain
28
+16
+13
28 September, sat
+16
+13
Feels like
+11
752 mmHg
80%
5.3
m/s
N
Climate normal
+16
+15
28 September, Saturday. day, 16°; night, 13°; mostly clear
29
+17
+15
29 September, sun
+17
+15
Feels like
+12
755 mmHg
63%
5.2
m/s
SE
Climate normal
+16
+14
29 September, Sunday. day, 17°; night, 15°; light rain
30
+16
+15
30 September, mon
+16
+15
Feels like
+13
757 mmHg
56%
3.6
m/s
NE
Climate normal
+15
+13
30 September, Monday. day, 16°; night, 15°; rain
1 October
+18
+13
1 October, tue
+18
+13
Feels like
+11
758 mmHg
57%
6.5
m/s
SW
Climate normal
+15
+12
1 October, Tuesday. day, 18°; night, 13°; clear
2
+18
+12
2 October, wed
+18
+12
Feels like
+13
758 mmHg
67%
2.5
m/s
NW
Climate normal
+15
+12
2 October, Wednesday. day, 18°; night, 12°; mostly clear
3
+15
+14
3 October, thu
+15
+14
Feels like
+8
762 mmHg
66%
8.4
m/s
E
Climate normal
+15
+13
3 October, Thursday. day, 15°; night, 14°; rain
4
+16
+12
4 October, fri
+16
+12
Feels like
+12
762 mmHg
72%
2.5
m/s
W
Climate normal
+15
+13
4 October, Friday. day, 16°; night, 12°; partly cloudy
5
+17
+13
5 October, sat
+17
+13
Feels like
+12
749 mmHg
90%
5.8
m/s
W
Climate normal
+14
+12
5 October, Saturday. day, 17°; night, 13°; mostly clear
Average for 30 days
18
sunny days
5
days with precipitation
7
cloudy days
18 sunny days; 5 days with precipitation; 7 cloudy days;
70
%
air humidity
5.3
m/s
Wind
S
9
mm of precipitation
(1% of annual average)
+19
°C
Water temperature
air humidity 70%; 9 millimeters of precipitation (1% of annual average); Wind southerly 5.3 Meters per second; Water temperature +19°
Forecast in graphs
Temperature
Humidity, %
Wind, m/s
Pressure, mmHg
E
S
W
W
W
S
S
SE
SE
SE
E
NW
S
SW
SW
S
SW
SW
N
N
NE
N
N
SE
NE
SW
NW
E
W
W
6
Average data for 10 years
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
1
October
2
3
4
5
Daytime temperature
Night-time temperature
