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Monthly weather forecast in Seattle
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
+24
+19
25 August, sun
+24
+19
Feels like
+24
760 mmHg
54%
3.4
m/s
N
25 August, Sunday. day, 24°; night, 19°; rain
26
August
+23
+15
26 August, mon
+23
+15
Feels like
+17
759 mmHg
68%
4.7
m/s
SW
Climate normal
+26
+19
26 August, Monday. day, 23°; night, 15°; rain
27
+19
+12
27 August, tue
+19
+12
Feels like
+13
760 mmHg
69%
4.7
m/s
NE
Climate normal
+22
+18
27 August, Tuesday. day, 19°; night, 12°; light rain
28
+20
+12
28 August, wed
+20
+12
Feels like
+15
762 mmHg
66%
5.7
m/s
N
Climate normal
+21
+16
28 August, Wednesday. day, 20°; night, 12°; clear
29
+23
+14
29 August, thu
+23
+14
Feels like
+16
758 mmHg
69%
5.2
m/s
N
Climate normal
+22
+16
29 August, Thursday. day, 23°; night, 14°; mostly clear
30
+25
+16
30 August, fri
+25
+16
Feels like
+22
757 mmHg
63%
3.8
m/s
N
Climate normal
+20
+16
30 August, Friday. day, 25°; night, 16°; clear
31
+26
+17
31 August, sat
+26
+17
Feels like
+22
756 mmHg
64%
4
m/s
N
Climate normal
+21
+17
31 August, Saturday. day, 26°; night, 17°; mostly clear
1 September
+26
+17
1 September, sun
+26
+17
Feels like
+23
754 mmHg
66%
3.2
m/s
NW
Climate normal
+22
+16
1 September, Sunday. day, 26°; night, 17°; partly cloudy
2
+24
+16
2 September, mon
+24
+16
Feels like
+19
755 mmHg
67%
4.6
m/s
SW
Climate normal
+22
+17
2 September, Monday. day, 24°; night, 16°; light rain
3
+23
+15
3 September, tue
+23
+15
Feels like
+18
758 mmHg
66%
3.8
m/s
SW
Climate normal
+22
+17
3 September, Tuesday. day, 23°; night, 15°; light rain
4
+24
+16
4 September, wed
+24
+16
Feels like
+19
760 mmHg
62%
4.7
m/s
NW
Climate normal
+22
+17
4 September, Wednesday. day, 24°; night, 16°; partly cloudy
5
+23
+16
5 September, thu
+23
+16
Feels like
+19
757 mmHg
72%
5.4
m/s
SW
Climate normal
+21
+17
5 September, Thursday. day, 23°; night, 16°; overcast
6
+24
+15
6 September, fri
+24
+15
Feels like
+20
757 mmHg
70%
5.3
m/s
NW
Climate normal
+22
+17
6 September, Friday. day, 24°; night, 15°; partly cloudy
7
+24
+10
7 September, sat
+24
+10
Feels like
+16
746 mmHg
74%
4.8
m/s
NW
Climate normal
+22
+18
7 September, Saturday. day, 24°; night, 10°; partly cloudy
8
+21
+12
8 September, sun
+21
+12
Feels like
+14
713 mmHg
57%
5.6
m/s
W
Climate normal
+22
+17
8 September, Sunday. day, 21°; night, 12°; light rain
9
+17
+5
9 September, mon
+17
+5
Feels like
+10
719 mmHg
79%
2.6
m/s
W
Climate normal
+22
+17
9 September, Monday. day, 17°; night, 5°; light rain
10
+17
+7
10 September, tue
+17
+7
Feels like
+8
718 mmHg
64%
4.3
m/s
W
Climate normal
+25
+18
10 September, Tuesday. day, 17°; night, 7°; clear
11
+14
+11
11 September, wed
+14
+11
Feels like
+10
718 mmHg
87%
2.6
m/s
S
Climate normal
+23
+17
11 September, Wednesday. day, 14°; night, 11°; light rain
12
+12
+7
12 September, thu
+12
+7
Feels like
+9
712 mmHg
99%
3
m/s
SW
Climate normal
+21
+16
12 September, Thursday. day, 12°; night, 7°; rain
13
+10
+5
13 September, fri
+10
+5
Feels like
+4
712 mmHg
86%
4.3
m/s
W
Climate normal
+22
+16
13 September, Friday. day, 10°; night, 5°; light rain
14
+14
+6
14 September, sat
+14
+6
Feels like
+8
718 mmHg
66%
2.6
m/s
SW
Climate normal
+22
+17
14 September, Saturday. day, 14°; night, 6°; partly cloudy
15
+14
+11
15 September, sun
+14
+11
Feels like
+11
717 mmHg
77%
2.9
m/s
SW
Climate normal
+21
+16
15 September, Sunday. day, 14°; night, 11°; light rain
16
+16
+6
16 September, mon
+16
+6
Feels like
+9
720 mmHg
71%
3.5
m/s
NW
Climate normal
+20
+15
16 September, Monday. day, 16°; night, 6°; mostly clear
17
+22
+10
17 September, tue
+22
+10
Feels like
+14
720 mmHg
57%
3.5
m/s
E
Climate normal
+20
+16
17 September, Tuesday. day, 22°; night, 10°; clear
18
+24
+12
18 September, wed
+24
+12
Feels like
+15
717 mmHg
52%
3.4
m/s
E
Climate normal
+20
+15
18 September, Wednesday. day, 24°; night, 12°; clear
19
+25
+8
19 September, thu
+25
+8
Feels like
+17
714 mmHg
57%
2.7
m/s
W
Climate normal
+19
+15
19 September, Thursday. day, 25°; night, 8°; clear
20
+23
+6
20 September, fri
+23
+6
Feels like
+16
713 mmHg
59%
3.1
m/s
NW
Climate normal
+20
+14
20 September, Friday. day, 23°; night, 6°; clear
21
+21
+8
21 September, sat
+21
+8
Feels like
+14
717 mmHg
64%
3.1
m/s
W
Climate normal
+20
+15
21 September, Saturday. day, 21°; night, 8°; clear
22
+21
+12
22 September, sun
+21
+12
Feels like
+15
716 mmHg
75%
3.5
m/s
W
Climate normal
+19
+15
22 September, Sunday. day, 21°; night, 12°; mostly clear
23
+13
+7
23 September, mon
+13
+7
Feels like
+10
715 mmHg
97%
3.7
m/s
W
Climate normal
+19
+15
23 September, Monday. day, 13°; night, 7°; rain
24
+13
+3
24 September, tue
+13
+3
Feels like
+5
720 mmHg
78%
4.5
m/s
W
Climate normal
+18
+15
24 September, Tuesday. day, 13°; night, 3°; mostly clear
Average data for 10 years
Next, the average data for 10 years
25
+18
+15
25 September, wed
+18
+15
Feels like
+18
763 mmHg
74%
3.5
m/s
E
25 September, Wednesday. day, 18°; night, 15°; rain
26
+19
+15
26 September, thu
+19
+15
Feels like
+19
762 mmHg
70%
3
m/s
N
26 September, Thursday. day, 19°; night, 15°; partly cloudy
27
+19
+14
27 September, fri
+19
+14
Feels like
+18
760 mmHg
68%
4.1
m/s
N
27 September, Friday. day, 19°; night, 14°; clear
28
+19
+14
28 September, sat
+19
+14
Feels like
+17
759 mmHg
66%
4
m/s
NE
28 September, Saturday. day, 19°; night, 14°; rain
Average for 30 days
14
sunny days
10
days with precipitation
6
cloudy days
14 sunny days; 10 days with precipitation; 6 cloudy days;
70
%
air humidity
4
m/s
Wind
W
12
mm of precipitation
(2% of annual average)
air humidity 70%; 12 millimeters of precipitation (2% of annual average); Wind westerly 4 Meters per second
Forecast in graphs
Temperature
Humidity, %
Wind, m/s
Pressure, mmHg
SW
NE
N
N
N
N
NW
SW
SW
NW
SW
NW
NW
W
W
W
S
SW
W
SW
SW
NW
E
E
W
NW
W
W
W
W
26
Average data for 10 years
27
28
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
Daytime temperature
Night-time temperature
