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May 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
27
+14
+10
27 April, sun
+14
+10
Feels like
+11
760 mmHg
73%
4.1
m/s
SW
27 April, Sunday. day, 14°; night, 10°; clear
28
+15
+10
28 April, mon
+15
+10
Feels like
+13
762 mmHg
64%
5
m/s
NW
28 April, Monday. day, 15°; night, 10°; rain
29
+15
+11
29 April, tue
+15
+11
Feels like
+13
762 mmHg
64%
4.6
m/s
N
29 April, Tuesday. day, 15°; night, 11°; rain
30
+17
+13
30 April, wed
+17
+13
Feels like
+15
760 mmHg
64%
4.9
m/s
NW
30 April, Wednesday. day, 17°; night, 13°; clear
1
+17
+12
1 May, thu
+17
+12
Feels like
+15
759 mmHg
66%
5
m/s
SW
1 May, Thursday. day, 17°; night, 12°; overcast
2
+19
+12
2 May, fri
+19
+12
Feels like
+17
758 mmHg
61%
5.6
m/s
W
2 May, Friday. day, 19°; night, 12°; clear
3
+17
+12
3 May, sat
+17
+12
Feels like
+15
756 mmHg
68%
5
m/s
SW
3 May, Saturday. day, 17°; night, 12°; clear
4
+15
+11
4 May, sun
+15
+11
Feels like
+13
758 mmHg
69%
4.5
m/s
W
4 May, Sunday. day, 15°; night, 11°; rain
5
+16
+10
5 May, mon
+16
+10
Feels like
+15
759 mmHg
67%
4.8
m/s
NW
5 May, Monday. day, 16°; night, 10°; clear
6
+18
+12
6 May, tue
+18
+12
Feels like
+16
759 mmHg
62%
4.3
m/s
NW
6 May, Tuesday. day, 18°; night, 12°; partly cloudy
7
+19
+12
7 May, wed
+19
+12
Feels like
+17
758 mmHg
61%
4
m/s
NW
7 May, Wednesday. day, 19°; night, 12°; partly cloudy
8
+18
+11
8 May, thu
+18
+11
Feels like
+17
758 mmHg
62%
4.9
m/s
NW
8 May, Thursday. day, 18°; night, 11°; rain
9
+18
+12
9 May, fri
+18
+12
Feels like
+17
758 mmHg
61%
4.1
m/s
NW
9 May, Friday. day, 18°; night, 12°; rain
10
+16
+12
10 May, sat
+16
+12
Feels like
+14
759 mmHg
69%
4
m/s
SW
10 May, Saturday. day, 16°; night, 12°; clear
11
+17
+12
11 May, sun
+17
+12
Feels like
+15
760 mmHg
62%
4.9
m/s
SW
11 May, Sunday. day, 17°; night, 12°; partly cloudy
12
+19
+13
12 May, mon
+19
+13
Feels like
+17
758 mmHg
60%
4.3
m/s
SW
12 May, Monday. day, 19°; night, 13°; partly cloudy
13
+20
+14
13 May, tue
+20
+14
Feels like
+19
757 mmHg
60%
3.7
m/s
NW
13 May, Tuesday. day, 20°; night, 14°; partly cloudy
14
+18
+13
14 May, wed
+18
+13
Feels like
+18
757 mmHg
69%
3.5
m/s
SW
14 May, Wednesday. day, 18°; night, 13°; rain
15
+19
+14
15 May, thu
+19
+14
Feels like
+18
757 mmHg
67%
3.9
m/s
SW
15 May, Thursday. day, 19°; night, 14°; partly cloudy
16
+20
+14
16 May, fri
+20
+14
Feels like
+19
757 mmHg
62%
3.5
m/s
N
16 May, Friday. day, 20°; night, 14°; rain
17
+20
+13
17 May, sat
+20
+13
Feels like
+19
757 mmHg
64%
4.8
m/s
W
17 May, Saturday. day, 20°; night, 13°; rain
18
+19
+13
18 May, sun
+19
+13
Feels like
+18
758 mmHg
63%
5
m/s
NW
18 May, Sunday. day, 19°; night, 13°; partly cloudy
19
+19
+13
19 May, mon
+19
+13
Feels like
+18
759 mmHg
62%
4
m/s
NW
19 May, Monday. day, 19°; night, 13°; partly cloudy
20
+17
+13
20 May, tue
+17
+13
Feels like
+16
756 mmHg
69%
3.7
m/s
NW
20 May, Tuesday. day, 17°; night, 13°; rain
21
+17
+12
21 May, wed
+17
+12
Feels like
+15
757 mmHg
74%
4.3
m/s
SW
21 May, Wednesday. day, 17°; night, 12°; overcast
22
+15
+11
22 May, thu
+15
+11
Feels like
+14
757 mmHg
76%
4.9
m/s
SW
22 May, Thursday. day, 15°; night, 11°; rain
23
+16
+12
23 May, fri
+16
+12
Feels like
+14
757 mmHg
73%
4.1
m/s
SW
23 May, Friday. day, 16°; night, 12°; overcast
24
+18
+12
24 May, sat
+18
+12
Feels like
+17
755 mmHg
70%
3.5
m/s
NW
24 May, Saturday. day, 18°; night, 12°; clear
25
+18
+13
25 May, sun
+18
+13
Feels like
+17
756 mmHg
70%
4.6
m/s
W
25 May, Sunday. day, 18°; night, 13°; rain
26
+19
+13
26 May, mon
+19
+13
Feels like
+18
757 mmHg
68%
3.7
m/s
W
26 May, Monday. day, 19°; night, 13°; clear
27
+19
+13
27 May, tue
+19
+13
Feels like
+19
758 mmHg
69%
3.5
m/s
W
27 May, Tuesday. day, 19°; night, 13°; partly cloudy
28
+18
+13
28 May, wed
+18
+13
Feels like
+18
757 mmHg
72%
4
m/s
W
28 May, Wednesday. day, 18°; night, 13°; clear
29
+19
+14
29 May, thu
+19
+14
Feels like
+19
757 mmHg
66%
3.2
m/s
N
29 May, Thursday. day, 19°; night, 14°; overcast
30
+21
+15
30 May, fri
+21
+15
Feels like
+21
757 mmHg
62%
3.2
m/s
NW
30 May, Friday. day, 21°; night, 15°; clear
31
+20
+15
31 May, sat
+20
+15
Feels like
+20
757 mmHg
63%
4
m/s
SW
31 May, Saturday. day, 20°; night, 15°; rain
Average data for 10 years
Portland May
8
sunny days
10
days with precipitation
13
cloudy days
8 sunny days; 10 days with precipitation; 13 cloudy days;
67
%
air humidity
2.7
m/s
Wind
W
57
mm of precipitation
(7% of annual average)
air humidity 67%; 57 millimeters of precipitation (7% of annual average); Wind westerly 2.7 Meters per second
Weather graphs for May
Temperature
Precipitation chance, %
Humidity, %
Wind, m/s
Pressure, mmHg
SW
W
SW
W
NW
NW
NW
NW
NW
SW
SW
SW
NW
SW
SW
N
W
NW
NW
NW
SW
SW
SW
NW
W
W
W
W
N
NW
SW
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
31
Daytime temperature
Night-time temperature
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