10 day forecast
Monthly forecast
Weather map
City or area
Find
Sign up
Log in
Go to comparison
September weather forecast in Sunnyvale
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
31
+22
+18
31 August, sun
+22
+18
Feels like
+22
789 mmHg
58%
4.9
m/s
W
31 August, Sunday. day, 22°; night, 18°; clear
1
+23
+18
1 September, mon
+23
+18
Feels like
+22
789 mmHg
56%
4
m/s
W
1 September, Monday. day, 23°; night, 18°; clear
2
+22
+16
2 September, tue
+22
+16
Feels like
+21
790 mmHg
56%
4.5
m/s
W
2 September, Tuesday. day, 22°; night, 16°; clear
3
+21
+15
3 September, wed
+21
+15
Feels like
+20
790 mmHg
62%
4.5
m/s
W
3 September, Wednesday. day, 21°; night, 15°; clear
4
+21
+16
4 September, thu
+21
+16
Feels like
+20
790 mmHg
62%
4.5
m/s
W
4 September, Thursday. day, 21°; night, 16°; clear
5
+23
+17
5 September, fri
+23
+17
Feels like
+22
790 mmHg
54%
4.1
m/s
W
5 September, Friday. day, 23°; night, 17°; clear
6
+22
+17
6 September, sat
+22
+17
Feels like
+22
790 mmHg
56%
4.4
m/s
NW
6 September, Saturday. day, 22°; night, 17°; clear
7
+21
+16
7 September, sun
+21
+16
Feels like
+21
790 mmHg
58%
4.1
m/s
W
7 September, Sunday. day, 21°; night, 16°; clear
8
+21
+17
8 September, mon
+21
+17
Feels like
+20
790 mmHg
62%
4
m/s
NW
8 September, Monday. day, 21°; night, 17°; clear
9
+23
+18
9 September, tue
+23
+18
Feels like
+22
790 mmHg
56%
4.1
m/s
W
9 September, Tuesday. day, 23°; night, 18°; clear
10
+22
+16
10 September, wed
+22
+16
Feels like
+22
790 mmHg
58%
3.7
m/s
W
10 September, Wednesday. day, 22°; night, 16°; partly cloudy
11
+20
+15
11 September, thu
+20
+15
Feels like
+20
791 mmHg
69%
4
m/s
W
11 September, Thursday. day, 20°; night, 15°; partly cloudy
12
+18
+15
12 September, fri
+18
+15
Feels like
+18
790 mmHg
73%
3.5
m/s
W
12 September, Friday. day, 18°; night, 15°; clear
13
+18
+14
13 September, sat
+18
+14
Feels like
+17
790 mmHg
70%
4.1
m/s
W
13 September, Saturday. day, 18°; night, 14°; clear
14
+18
+14
14 September, sun
+18
+14
Feels like
+17
792 mmHg
70%
5.1
m/s
W
14 September, Sunday. day, 18°; night, 14°; clear
15
+18
+15
15 September, mon
+18
+15
Feels like
+18
792 mmHg
70%
5
m/s
W
15 September, Monday. day, 18°; night, 15°; clear
16
+19
+16
16 September, tue
+19
+16
Feels like
+19
791 mmHg
68%
4.8
m/s
W
16 September, Tuesday. day, 19°; night, 16°; clear
17
+21
+16
17 September, wed
+21
+16
Feels like
+20
791 mmHg
64%
4.4
m/s
W
17 September, Wednesday. day, 21°; night, 16°; clear
18
+21
+17
18 September, thu
+21
+17
Feels like
+21
791 mmHg
60%
4.5
m/s
NW
18 September, Thursday. day, 21°; night, 17°; clear
19
+21
+17
19 September, fri
+21
+17
Feels like
+21
790 mmHg
62%
3.7
m/s
W
19 September, Friday. day, 21°; night, 17°; clear
20
+19
+15
20 September, sat
+19
+15
Feels like
+18
790 mmHg
66%
5
m/s
W
20 September, Saturday. day, 19°; night, 15°; clear
21
+19
+15
21 September, sun
+19
+15
Feels like
+18
791 mmHg
67%
5.1
m/s
W
21 September, Sunday. day, 19°; night, 15°; clear
22
+21
+16
22 September, mon
+21
+16
Feels like
+19
792 mmHg
60%
5.4
m/s
NW
22 September, Monday. day, 21°; night, 16°; clear
23
+21
+17
23 September, tue
+21
+17
Feels like
+20
792 mmHg
56%
5
m/s
NW
23 September, Tuesday. day, 21°; night, 17°; clear
24
+21
+17
24 September, wed
+21
+17
Feels like
+20
791 mmHg
56%
4.9
m/s
NW
24 September, Wednesday. day, 21°; night, 17°; clear
25
+23
+19
25 September, thu
+23
+19
Feels like
+22
790 mmHg
51%
5
m/s
NW
25 September, Thursday. day, 23°; night, 19°; clear
26
+24
+19
26 September, fri
+24
+19
Feels like
+23
790 mmHg
46%
3.7
m/s
NW
26 September, Friday. day, 24°; night, 19°; clear
27
+23
+18
27 September, sat
+23
+18
Feels like
+22
790 mmHg
49%
3.5
m/s
NW
27 September, Saturday. day, 23°; night, 18°; clear
28
+19
+15
28 September, sun
+19
+15
Feels like
+18
791 mmHg
64%
3.9
m/s
NW
28 September, Sunday. day, 19°; night, 15°; clear
29
+18
+15
29 September, mon
+18
+15
Feels like
+17
792 mmHg
67%
4.3
m/s
W
29 September, Monday. day, 18°; night, 15°; clear
30
+20
+17
30 September, tue
+20
+17
Feels like
+19
792 mmHg
57%
4.5
m/s
NW
30 September, Tuesday. day, 20°; night, 17°; clear
1
+21
+16
1 October, wed
+21
+16
Feels like
+18
792 mmHg
50%
5
m/s
NW
1 October, Wednesday. day, 21°; night, 16°; clear
2
+19
+16
2 October, thu
+19
+16
Feels like
+17
790 mmHg
57%
5
m/s
W
2 October, Thursday. day, 19°; night, 16°; clear
3
+19
+16
3 October, fri
+19
+16
Feels like
+17
790 mmHg
57%
4.9
m/s
SW
3 October, Friday. day, 19°; night, 16°; clear
4
+19
+16
4 October, sat
+19
+16
Feels like
+18
791 mmHg
62%
4.8
m/s
W
4 October, Saturday. day, 19°; night, 16°; clear
Average data for 10 years
Sunnyvale September
28
sunny days
0
days with precipitation
2
cloudy days
28 sunny days; 0 days with precipitation; 2 cloudy days;
61
%
air humidity
2.4
m/s
Wind
W
5
mm of precipitation
(1% of annual average)
air humidity 61%; 5 millimeters of precipitation (1% of annual average); Wind westerly 2.4 Meters per second
Weather graphs for September
Temperature
Precipitation chance, %
Humidity, %
Wind, m/s
Pressure, mmHg
W
W
W
W
W
NW
W
NW
W
W
W
W
W
W
W
W
W
NW
W
W
W
NW
NW
NW
NW
NW
NW
NW
W
NW
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
Daytime temperature
Night-time temperature
Cities near you
San Francisco
Sacramento
Oakland
San Jose
Cupertino
Santa Barbara
Reno
Monterey
South San Francisco
Cities with similar weather in September
Podgorica
Toronto
Genoa
Boston
Seattle
Lima
Brisbane
San Remo
San Sebastian
