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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
25
+27
+20
25 August, sun
+27
+20
Feels like
+28
757 mmHg
51%
4.5
m/s
NW
25 August, Sunday. day, 27°; night, 20°; rain
26
+28
+20
26 August, mon
+28
+20
Feels like
+29
757 mmHg
50%
3.7
m/s
NW
26 August, Monday. day, 28°; night, 20°; clear
27
+24
+18
27 August, tue
+24
+18
Feels like
+25
757 mmHg
61%
3
m/s
N
27 August, Tuesday. day, 24°; night, 18°; clear
28
August
+24
+11
28 August, wed
+24
+11
Feels like
+18
759 mmHg
53%
3.6
m/s
N
Climate normal
+23
+17
28 August, Wednesday. day, 24°; night, 11°; mostly clear
29
+34
+13
29 August, thu
+34
+13
Feels like
+25
755 mmHg
39%
4.2
m/s
NE
Climate normal
+24
+16
29 August, Thursday. day, 34°; night, 13°; clear
30
+35
+15
30 August, fri
+35
+15
Feels like
+29
755 mmHg
42%
2.2
m/s
N
Climate normal
+22
+17
30 August, Friday. day, 35°; night, 15°; clear
31
+35
+17
31 August, sat
+35
+17
Feels like
+30
753 mmHg
53%
2.4
m/s
NW
Climate normal
+23
+17
31 August, Saturday. day, 35°; night, 17°; mostly clear
1 September
+32
+17
1 September, sun
+32
+17
Feels like
+28
752 mmHg
57%
2.7
m/s
SW
Climate normal
+24
+17
1 September, Sunday. day, 32°; night, 17°; partly cloudy
2
+24
+15
2 September, mon
+24
+15
Feels like
+21
754 mmHg
68%
2.8
m/s
SW
Climate normal
+24
+18
2 September, Monday. day, 24°; night, 15°; light rain
3
+27
+14
3 September, tue
+27
+14
Feels like
+23
758 mmHg
60%
2.6
m/s
N
Climate normal
+24
+18
3 September, Tuesday. day, 27°; night, 14°; light rain
4
+31
+16
4 September, wed
+31
+16
Feels like
+25
756 mmHg
56%
3.1
m/s
N
Climate normal
+24
+17
4 September, Wednesday. day, 31°; night, 16°; clear
5
+34
+17
5 September, thu
+34
+17
Feels like
+28
755 mmHg
50%
3
m/s
NE
Climate normal
+24
+18
5 September, Thursday. day, 34°; night, 17°; mostly clear
6
+31
+17
6 September, fri
+31
+17
Feels like
+27
754 mmHg
58%
2.7
m/s
SW
Climate normal
+24
+18
6 September, Friday. day, 31°; night, 17°; mostly clear
7
+28
+14
7 September, sat
+28
+14
Feels like
+23
754 mmHg
57%
3.1
m/s
W
Climate normal
+25
+19
7 September, Saturday. day, 28°; night, 14°; partly cloudy
8
+28
+15
8 September, sun
+28
+15
Feels like
+22
753 mmHg
61%
3.2
m/s
SW
Climate normal
+25
+17
8 September, Sunday. day, 28°; night, 15°; partly cloudy
9
+22
+13
9 September, mon
+22
+13
Feels like
+12
736 mmHg
84%
7.8
m/s
S
Climate normal
+26
+18
9 September, Monday. day, 22°; night, 13°; rain
10
+13
+8
10 September, tue
+13
+8
Feels like
+10
720 mmHg
96%
3.2
m/s
SW
Climate normal
+29
+19
10 September, Tuesday. day, 13°; night, 8°; light rain
11
+17
+7
11 September, wed
+17
+7
Feels like
+10
719 mmHg
74%
3.3
m/s
NW
Climate normal
+26
+17
11 September, Wednesday. day, 17°; night, 7°; partly cloudy
12
+17
+8
12 September, thu
+17
+8
Feels like
+9
719 mmHg
60%
4.3
m/s
NW
Climate normal
+24
+16
12 September, Thursday. day, 17°; night, 8°; mostly clear
13
+22
+10
13 September, fri
+22
+10
Feels like
+12
719 mmHg
41%
4.8
m/s
E
Climate normal
+24
+18
13 September, Friday. day, 22°; night, 10°; clear
14
+27
+14
14 September, sat
+27
+14
Feels like
+18
719 mmHg
43%
3.4
m/s
E
Climate normal
+24
+18
14 September, Saturday. day, 27°; night, 14°; clear
15
+29
+11
15 September, sun
+29
+11
Feels like
+20
717 mmHg
48%
2.9
m/s
NE
Climate normal
+23
+17
15 September, Sunday. day, 29°; night, 11°; clear
16
+28
+15
16 September, mon
+28
+15
Feels like
+21
718 mmHg
50%
3.2
m/s
NW
Climate normal
+21
+17
16 September, Monday. day, 28°; night, 15°; mostly clear
17
+26
+14
17 September, tue
+26
+14
Feels like
+21
717 mmHg
54%
2.8
m/s
NE
Climate normal
+22
+17
17 September, Tuesday. day, 26°; night, 14°; partly cloudy
18
+19
+10
18 September, wed
+19
+10
Feels like
+14
715 mmHg
87%
5
m/s
SW
Climate normal
+22
+16
18 September, Wednesday. day, 19°; night, 10°; rain
19
+14
+11
19 September, thu
+14
+11
Feels like
+10
719 mmHg
86%
3
m/s
NW
Climate normal
+21
+17
19 September, Thursday. day, 14°; night, 11°; partly cloudy
20
+22
+10
20 September, fri
+22
+10
Feels like
+15
714 mmHg
73%
3.4
m/s
NW
Climate normal
+21
+15
20 September, Friday. day, 22°; night, 10°; mostly clear
21
+16
+7
21 September, sat
+16
+7
Feels like
+10
717 mmHg
82%
3.9
m/s
W
Climate normal
+21
+16
21 September, Saturday. day, 16°; night, 7°; partly cloudy
22
+16
+6
22 September, sun
+16
+6
Feels like
+8
721 mmHg
56%
3.6
m/s
NW
Climate normal
+20
+15
22 September, Sunday. day, 16°; night, 6°; clear
23
+20
+4
23 September, mon
+20
+4
Feels like
+12
717 mmHg
56%
3.3
m/s
NW
Climate normal
+20
+16
23 September, Monday. day, 20°; night, 4°; mostly clear
24
+18
+4
24 September, tue
+18
+4
Feels like
+11
721 mmHg
61%
3.7
m/s
NW
Climate normal
+20
+16
24 September, Tuesday. day, 18°; night, 4°; clear
25
+18
+8
25 September, wed
+18
+8
Feels like
+10
721 mmHg
62%
3.6
m/s
W
Climate normal
+21
+15
25 September, Wednesday. day, 18°; night, 8°; clear
26
+19
+12
26 September, thu
+19
+12
Feels like
+13
720 mmHg
60%
4
m/s
SW
Climate normal
+23
+16
26 September, Thursday. day, 19°; night, 12°; mostly clear
Average data for 10 years
Next, the average data for 10 years
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
Average for 30 days
18
sunny days
5
days with precipitation
7
cloudy days
18 sunny days; 5 days with precipitation; 7 cloudy days;
61
%
air humidity
3.5
m/s
Wind
NW
7
mm of precipitation
(1% of annual average)
air humidity 61%; 7 millimeters of precipitation (1% of annual average); Wind north-westerly 3.5 Meters per second
Forecast in graphs
Temperature
Humidity, %
Wind, m/s
Pressure, mmHg
N
NE
N
NW
SW
SW
N
N
NE
SW
W
SW
S
SW
NW
NW
E
E
NE
NW
NE
SW
NW
NW
W
NW
NW
NW
W
SW
28
Average data for 10 years
29
30
31
1
September
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
Daytime temperature
Night-time temperature
