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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
28
+15
+10
28 April, Sunday. day, 15°; night, 10°; rain
29
+15
+11
29 April, Monday. day, 15°; night, 11°; rain
30
+17
+13
30 April, Tuesday. day, 17°; night, 13°; clear
1
+17
+12
1 May, Wednesday. day, 17°; night, 12°; overcast
2
+19
+12
2 May, Thursday. day, 19°; night, 12°; clear
3
+17
+12
3 May, Friday. day, 17°; night, 12°; clear
4
+15
+11
4 May, Saturday. day, 15°; night, 11°; rain
5
+16
+10
5 May, Sunday. day, 16°; night, 10°; clear
6
+18
+12
6 May, Monday. day, 18°; night, 12°; partly cloudy
7
+19
+12
7 May, Tuesday. day, 19°; night, 12°; partly cloudy
8
+18
+11
8 May, Wednesday. day, 18°; night, 11°; rain
9
+18
+12
9 May, Thursday. day, 18°; night, 12°; rain
10
+16
+12
10 May, Friday. day, 16°; night, 12°; clear
11
+17
+12
11 May, Saturday. day, 17°; night, 12°; partly cloudy
12
+19
+13
12 May, Sunday. day, 19°; night, 13°; partly cloudy
13
+20
+14
13 May, Monday. day, 20°; night, 14°; partly cloudy
14
+18
+13
14 May, Tuesday. day, 18°; night, 13°; rain
15
+19
+14
15 May, Wednesday. day, 19°; night, 14°; partly cloudy
16
+20
+14
16 May, Thursday. day, 20°; night, 14°; rain
17
+20
+13
17 May, Friday. day, 20°; night, 13°; rain
18
+19
+13
18 May, Saturday. day, 19°; night, 13°; partly cloudy
19
+19
+13
19 May, Sunday. day, 19°; night, 13°; partly cloudy
20
+17
+13
20 May, Monday. day, 17°; night, 13°; rain
21
+17
+12
21 May, Tuesday. day, 17°; night, 12°; overcast
22
+15
+11
22 May, Wednesday. day, 15°; night, 11°; rain
23
+16
+12
23 May, Thursday. day, 16°; night, 12°; overcast
24
+18
+12
24 May, Friday. day, 18°; night, 12°; clear
25
+18
+13
25 May, Saturday. day, 18°; night, 13°; rain
26
+19
+13
26 May, Sunday. day, 19°; night, 13°; clear
27
+19
+13
27 May, Monday. day, 19°; night, 13°; partly cloudy
28
+18
+13
28 May, Tuesday. day, 18°; night, 13°; clear
29
+19
+14
29 May, Wednesday. day, 19°; night, 14°; overcast
30
+21
+15
30 May, Thursday. day, 21°; night, 15°; clear
31
+20
+15
31 May, Friday. day, 20°; night, 15°; rain
1
+20
+14
1 June, Saturday. day, 20°; night, 14°; overcast
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
Cities near you
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Eugene
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Seaside
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Cities with similar weather in May
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Tokmok
Koblenz