10 day forecast
Monthly forecast
Weather map
City or area
Find
Sign up
Log in
Go to comparison
September weather forecast in Ottawa
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
+28
+22
31 August, sun
+28
+22
Feels like
+28
748 mmHg
57%
5.1
m/s
S
31 August, Sunday. day, 28°; night, 22°; clear
1
+26
+21
1 September, mon
+26
+21
Feels like
+26
748 mmHg
62%
5.6
m/s
E
1 September, Monday. day, 26°; night, 21°; partly cloudy
2
+27
+20
2 September, tue
+27
+20
Feels like
+26
748 mmHg
57%
5.4
m/s
NW
2 September, Tuesday. day, 27°; night, 20°; clear
3
+25
+20
3 September, wed
+25
+20
Feels like
+25
748 mmHg
62%
5.5
m/s
W
3 September, Wednesday. day, 25°; night, 20°; partly cloudy
4
+24
+20
4 September, thu
+24
+20
Feels like
+24
749 mmHg
62%
5.5
m/s
N
4 September, Thursday. day, 24°; night, 20°; partly cloudy
5
+25
+17
5 September, fri
+25
+17
Feels like
+24
749 mmHg
57%
5.6
m/s
SE
5 September, Friday. day, 25°; night, 17°; clear
6
+25
+20
6 September, sat
+25
+20
Feels like
+24
749 mmHg
51%
5.5
m/s
W
6 September, Saturday. day, 25°; night, 20°; clear
7
+24
+19
7 September, sun
+24
+19
Feels like
+24
749 mmHg
62%
5.1
m/s
W
7 September, Sunday. day, 24°; night, 19°; clear
8
+23
+18
8 September, mon
+23
+18
Feels like
+23
748 mmHg
68%
4.9
m/s
N
8 September, Monday. day, 23°; night, 18°; clear
9
+24
+18
9 September, tue
+24
+18
Feels like
+23
749 mmHg
62%
5.1
m/s
E
9 September, Tuesday. day, 24°; night, 18°; clear
10
+22
+17
10 September, wed
+22
+17
Feels like
+21
750 mmHg
60%
5.6
m/s
NW
10 September, Wednesday. day, 22°; night, 17°; clear
11
+23
+16
11 September, thu
+23
+16
Feels like
+21
750 mmHg
55%
6.1
m/s
NW
11 September, Thursday. day, 23°; night, 16°; clear
12
+23
+17
12 September, fri
+23
+17
Feels like
+21
749 mmHg
56%
5
m/s
W
12 September, Friday. day, 23°; night, 17°; clear
13
+23
+16
13 September, sat
+23
+16
Feels like
+22
749 mmHg
56%
4.5
m/s
S
13 September, Saturday. day, 23°; night, 16°; partly cloudy
14
+21
+17
14 September, sun
+21
+17
Feels like
+20
750 mmHg
60%
4.9
m/s
E
14 September, Sunday. day, 21°; night, 17°; partly cloudy
15
+21
+16
15 September, mon
+21
+16
Feels like
+20
752 mmHg
61%
5.5
m/s
NE
15 September, Monday. day, 21°; night, 16°; partly cloudy
16
+23
+16
16 September, tue
+23
+16
Feels like
+22
750 mmHg
60%
5.3
m/s
SE
16 September, Tuesday. day, 23°; night, 16°; partly cloudy
17
+23
+18
17 September, wed
+23
+18
Feels like
+23
749 mmHg
68%
5.6
m/s
SE
17 September, Wednesday. day, 23°; night, 18°; partly cloudy
18
+22
+17
18 September, thu
+22
+17
Feels like
+21
749 mmHg
68%
5.1
m/s
NE
18 September, Thursday. day, 22°; night, 17°; rain
19
+24
+17
19 September, fri
+24
+17
Feels like
+23
748 mmHg
58%
6
m/s
S
19 September, Friday. day, 24°; night, 17°; clear
20
+24
+19
20 September, sat
+24
+19
Feels like
+22
748 mmHg
56%
5.9
m/s
W
20 September, Saturday. day, 24°; night, 19°; clear
21
+22
+17
21 September, sun
+22
+17
Feels like
+22
750 mmHg
63%
5.3
m/s
SE
21 September, Sunday. day, 22°; night, 17°; clear
22
+24
+17
22 September, mon
+24
+17
Feels like
+22
751 mmHg
55%
5.4
m/s
SE
22 September, Monday. day, 24°; night, 17°; rain
23
+22
+18
23 September, tue
+22
+18
Feels like
+21
751 mmHg
62%
5.5
m/s
SE
23 September, Tuesday. day, 22°; night, 18°; clear
24
+23
+17
24 September, wed
+23
+17
Feels like
+22
750 mmHg
58%
4.9
m/s
E
24 September, Wednesday. day, 23°; night, 17°; clear
25
+22
+17
25 September, thu
+22
+17
Feels like
+22
748 mmHg
68%
5.1
m/s
SE
25 September, Thursday. day, 22°; night, 17°; rain
26
+21
+16
26 September, fri
+21
+16
Feels like
+20
748 mmHg
61%
5.6
m/s
NE
26 September, Friday. day, 21°; night, 16°; clear
27
+22
+15
27 September, sat
+22
+15
Feels like
+20
747 mmHg
56%
5.9
m/s
NW
27 September, Saturday. day, 22°; night, 15°; partly cloudy
28
+19
+16
28 September, sun
+19
+16
Feels like
+17
748 mmHg
62%
6
m/s
NW
28 September, Sunday. day, 19°; night, 16°; clear
29
+18
+14
29 September, mon
+18
+14
Feels like
+16
750 mmHg
60%
5.8
m/s
N
29 September, Monday. day, 18°; night, 14°; clear
30
+18
+12
30 September, tue
+18
+12
Feels like
+15
749 mmHg
63%
6.3
m/s
NE
30 September, Tuesday. day, 18°; night, 12°; clear
1
+18
+14
1 October, wed
+18
+14
Feels like
+15
748 mmHg
64%
5.8
m/s
NE
1 October, Wednesday. day, 18°; night, 14°; partly cloudy
2
+17
+14
2 October, thu
+17
+14
Feels like
+14
749 mmHg
68%
6
m/s
NW
2 October, Thursday. day, 17°; night, 14°; partly cloudy
3
+17
+13
3 October, fri
+17
+13
Feels like
+15
750 mmHg
69%
5.5
m/s
N
3 October, Friday. day, 17°; night, 13°; partly cloudy
4
+20
+13
4 October, sat
+20
+13
Feels like
+17
750 mmHg
60%
5.1
m/s
S
4 October, Saturday. day, 20°; night, 13°; partly cloudy
Average data for 10 years
Ottawa September
18
sunny days
3
days with precipitation
9
cloudy days
18 sunny days; 3 days with precipitation; 9 cloudy days;
61
%
air humidity
3.9
m/s
Wind
NW
55
mm of precipitation
(7% of annual average)
air humidity 61%; 55 millimeters of precipitation (7% of annual average); Wind north-westerly 3.9 Meters per second
Weather graphs for September
Temperature
Precipitation chance, %
Humidity, %
Wind, m/s
Pressure, mmHg
E
NW
W
N
SE
W
W
N
E
NW
NW
W
S
E
NE
SE
SE
NE
S
W
SE
SE
SE
E
SE
NE
NW
NW
N
NE
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
Chicago
Indianapolis
Iowa City
St. Louis
Milwaukee
Wisconsin Rapids
Michigan City
Madison
Wisconsin Dells
Cities with similar weather in September
Suhum
Tbilisi
Burgas
Varna
Florence
Tivat
Kemer
Belgrade
Verona
