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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
11
+26
+19
11 August, sun
+26
+19
Feels like
+28
757 mmHg
67%
3.7
m/s
NW
11 August, Sunday. day, 26°; night, 19°; partly cloudy
12
+26
+19
12 August, mon
+26
+19
Feels like
+28
757 mmHg
62%
3.9
m/s
NW
12 August, Monday. day, 26°; night, 19°; clear
13
August
+22
+14
13 August, tue
+22
+14
Feels like
+18
755 mmHg
58%
2.9
m/s
SW
Climate normal
+26
+19
13 August, Tuesday. day, 22°; night, 14°; light rain
14
+27
+16
14 August, wed
+27
+16
Feels like
+24
756 mmHg
58%
3.2
m/s
N
Climate normal
+27
+19
14 August, Wednesday. day, 27°; night, 16°; mostly clear
15
+26
+16
15 August, thu
+26
+16
Feels like
+20
756 mmHg
59%
3
m/s
SW
Climate normal
+30
+21
15 August, Thursday. day, 26°; night, 16°; light rain
16
+25
+14
16 August, fri
+25
+14
Feels like
+21
755 mmHg
62%
2.4
m/s
W
Climate normal
+30
+20
16 August, Friday. day, 25°; night, 14°; partly cloudy
17
+23
+14
17 August, sat
+23
+14
Feels like
+21
753 mmHg
71%
2.9
m/s
E
Climate normal
+28
+20
17 August, Saturday. day, 23°; night, 14°; mostly clear
18
+23
+13
18 August, sun
+23
+13
Feels like
+19
754 mmHg
68%
3.3
m/s
SW
Climate normal
+27
+18
18 August, Sunday. day, 23°; night, 13°; light rain
19
+25
+13
19 August, mon
+25
+13
Feels like
+21
756 mmHg
58%
3.2
m/s
S
Climate normal
+26
+18
19 August, Monday. day, 25°; night, 13°; partly cloudy
20
+26
+15
20 August, tue
+26
+15
Feels like
+22
756 mmHg
64%
2.7
m/s
S
Climate normal
+26
+18
20 August, Tuesday. day, 26°; night, 15°; partly cloudy
21
+25
+15
21 August, wed
+25
+15
Feels like
+22
757 mmHg
67%
3
m/s
SW
Climate normal
+25
+17
21 August, Wednesday. day, 25°; night, 15°; rain
22
+24
+15
22 August, thu
+24
+15
Feels like
+20
756 mmHg
68%
3.2
m/s
SW
Climate normal
+25
+18
22 August, Thursday. day, 24°; night, 15°; light rain
23
+25
+15
23 August, fri
+25
+15
Feels like
+20
754 mmHg
69%
3.2
m/s
SW
Climate normal
+27
+18
23 August, Friday. day, 25°; night, 15°; partly cloudy
24
+27
+15
24 August, sat
+27
+15
Feels like
+21
754 mmHg
65%
3.1
m/s
SW
Climate normal
+27
+19
24 August, Saturday. day, 27°; night, 15°; partly cloudy
25
+24
+11
25 August, sun
+24
+11
Feels like
+18
746 mmHg
74%
3.3
m/s
SW
Climate normal
+27
+20
25 August, Sunday. day, 24°; night, 11°; rain
26
+20
+10
26 August, mon
+20
+10
Feels like
+13
722 mmHg
67%
3.8
m/s
S
Climate normal
+28
+20
26 August, Monday. day, 20°; night, 10°; mostly clear
27
+26
+9
27 August, tue
+26
+9
Feels like
+16
720 mmHg
55%
4
m/s
NW
Climate normal
+24
+18
27 August, Tuesday. day, 26°; night, 9°; clear
28
+28
+9
28 August, wed
+28
+9
Feels like
+18
720 mmHg
55%
4.4
m/s
NW
Climate normal
+23
+17
28 August, Wednesday. day, 28°; night, 9°; clear
29
+24
+7
29 August, thu
+24
+7
Feels like
+16
720 mmHg
55%
4.9
m/s
NW
Climate normal
+24
+16
29 August, Thursday. day, 24°; night, 7°; clear
30
+24
+7
30 August, fri
+24
+7
Feels like
+14
719 mmHg
46%
4
m/s
N
Climate normal
+22
+17
30 August, Friday. day, 24°; night, 7°; clear
31
+24
+7
31 August, sat
+24
+7
Feels like
+15
718 mmHg
50%
4.5
m/s
W
Climate normal
+23
+17
31 August, Saturday. day, 24°; night, 7°; clear
1 September
+22
+9
1 September, sun
+22
+9
Feels like
+14
719 mmHg
66%
4.3
m/s
NW
Climate normal
+24
+17
1 September, Sunday. day, 22°; night, 9°; mostly clear
2
+22
+13
2 September, mon
+22
+13
Feels like
+16
718 mmHg
71%
4
m/s
W
Climate normal
+24
+18
2 September, Monday. day, 22°; night, 13°; mostly clear
3
+20
+7
3 September, tue
+20
+7
Feels like
+11
720 mmHg
57%
4.8
m/s
NW
Climate normal
+24
+18
3 September, Tuesday. day, 20°; night, 7°; mostly clear
4
+22
+6
4 September, wed
+22
+6
Feels like
+12
719 mmHg
52%
4.7
m/s
N
Climate normal
+24
+17
4 September, Wednesday. day, 22°; night, 6°; clear
5
+24
+6
5 September, thu
+24
+6
Feels like
+14
718 mmHg
54%
3.8
m/s
NW
Climate normal
+24
+18
5 September, Thursday. day, 24°; night, 6°; clear
6
+26
+6
6 September, fri
+26
+6
Feels like
+16
718 mmHg
52%
4
m/s
NW
Climate normal
+24
+18
6 September, Friday. day, 26°; night, 6°; clear
7
+26
+6
7 September, sat
+26
+6
Feels like
+17
719 mmHg
54%
4.2
m/s
W
Climate normal
+25
+19
7 September, Saturday. day, 26°; night, 6°; clear
8
+25
+8
8 September, sun
+25
+8
Feels like
+16
721 mmHg
52%
4.5
m/s
NW
Climate normal
+25
+17
8 September, Sunday. day, 25°; night, 8°; clear
9
+28
+12
9 September, mon
+28
+12
Feels like
+18
721 mmHg
41%
5
m/s
N
Climate normal
+26
+18
9 September, Monday. day, 28°; night, 12°; clear
10
+30
+10
10 September, tue
+30
+10
Feels like
+20
720 mmHg
46%
4.6
m/s
N
Climate normal
+29
+19
10 September, Tuesday. day, 30°; night, 10°; clear
11
+28
+9
11 September, wed
+28
+9
Feels like
+19
718 mmHg
48%
4.9
m/s
NW
Climate normal
+26
+17
11 September, Wednesday. day, 28°; night, 9°; clear
Average data for 10 years
Next, the average data for 10 years
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
Average for 30 days
19
sunny days
6
days with precipitation
5
cloudy days
19 sunny days; 6 days with precipitation; 5 cloudy days;
59
%
air humidity
3.8
m/s
Wind
NW
11
mm of precipitation
(2% of annual average)
air humidity 59%; 11 millimeters of precipitation (2% of annual average); Wind north-westerly 3.8 Meters per second
Forecast in graphs
Temperature
Humidity, %
Wind, m/s
Pressure, mmHg
SW
N
SW
W
E
SW
S
S
SW
SW
SW
SW
SW
S
NW
NW
NW
N
W
NW
W
NW
N
NW
NW
W
NW
N
N
NW
13
Average data for 10 years
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
1
September
2
3
4
5
6
7
8
9
10
11
Daytime temperature
Night-time temperature
