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Monthly 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
18
+24
+18
18 August, sun
+24
+18
Feels like
+24
748 mmHg
68%
4.6
m/s
W
18 August, Sunday. day, 24°; night, 18°; clear
19
+23
+17
19 August, mon
+23
+17
Feels like
+22
750 mmHg
68%
5.1
m/s
SW
19 August, Monday. day, 23°; night, 17°; rain
20
+22
+17
20 August, tue
+22
+17
Feels like
+23
750 mmHg
73%
4.8
m/s
SW
20 August, Tuesday. day, 22°; night, 17°; rain
21
+21
+17
21 August, wed
+21
+17
Feels like
+21
749 mmHg
77%
5.6
m/s
SW
21 August, Wednesday. day, 21°; night, 17°; rain
22
+22
+17
22 August, thu
+22
+17
Feels like
+21
752 mmHg
67%
5
m/s
NW
22 August, Thursday. day, 22°; night, 17°; rain
23
+23
+17
23 August, fri
+23
+17
Feels like
+22
753 mmHg
63%
5.1
m/s
SW
23 August, Friday. day, 23°; night, 17°; clear
24
August
+25
+18
24 August, sat
+25
+18
Feels like
+23
760 mmHg
64%
3.5
m/s
SW
Climate normal
+23
+17
24 August, Saturday. day, 25°; night, 18°; partly cloudy
25
+26
+18
25 August, sun
+26
+18
Feels like
+23
761 mmHg
68%
3.2
m/s
W
Climate normal
+21
+17
25 August, Sunday. day, 26°; night, 18°; light rain
26
+28
+19
26 August, mon
+28
+19
Feels like
+25
759 mmHg
69%
2.3
m/s
S
Climate normal
+22
+16
26 August, Monday. day, 28°; night, 19°; rain
27
+29
+21
27 August, tue
+29
+21
Feels like
+26
755 mmHg
72%
4.1
m/s
SW
Climate normal
+21
+17
27 August, Tuesday. day, 29°; night, 21°; rain
28
+22
+13
28 August, wed
+22
+13
Feels like
+19
755 mmHg
75%
4.3
m/s
N
Climate normal
+21
+16
28 August, Wednesday. day, 22°; night, 13°; partly cloudy
29
+23
+12
29 August, thu
+23
+12
Feels like
+17
760 mmHg
54%
3.1
m/s
E
Climate normal
+22
+16
29 August, Thursday. day, 23°; night, 12°; clear
30
+23
+19
30 August, fri
+23
+19
Feels like
+19
756 mmHg
72%
3.8
m/s
SE
Climate normal
+22
+17
30 August, Friday. day, 23°; night, 19°; light rain
31
+25
+16
31 August, sat
+25
+16
Feels like
+21
753 mmHg
69%
4.4
m/s
W
Climate normal
+23
+18
31 August, Saturday. day, 25°; night, 16°; rain
1 September
+25
+14
1 September, sun
+25
+14
Feels like
+21
752 mmHg
74%
5.2
m/s
SW
Climate normal
+23
+17
1 September, Sunday. day, 25°; night, 14°; light rain
2
+22
+13
2 September, mon
+22
+13
Feels like
+16
756 mmHg
59%
5.1
m/s
W
Climate normal
+22
+17
2 September, Monday. day, 22°; night, 13°; partly cloudy
3
+22
+13
3 September, tue
+22
+13
Feels like
+17
759 mmHg
58%
3.7
m/s
SW
Climate normal
+22
+16
3 September, Tuesday. day, 22°; night, 13°; partly cloudy
4
+23
+14
4 September, wed
+23
+14
Feels like
+18
756 mmHg
59%
3.6
m/s
SW
Climate normal
+20
+17
4 September, Wednesday. day, 23°; night, 14°; partly cloudy
5
+24
+10
5 September, thu
+24
+10
Feels like
+18
755 mmHg
60%
3.6
m/s
W
Climate normal
+21
+15
5 September, Thursday. day, 24°; night, 10°; partly cloudy
6
+19
+16
6 September, fri
+19
+16
Feels like
+12
754 mmHg
72%
3.1
m/s
S
Climate normal
+21
+16
6 September, Friday. day, 19°; night, 16°; mostly clear
7
+19
+14
7 September, sat
+19
+14
Feels like
+13
752 mmHg
64%
4.5
m/s
S
Climate normal
+20
+16
7 September, Saturday. day, 19°; night, 14°; partly cloudy
8
+19
+13
8 September, sun
+19
+13
Feels like
+14
752 mmHg
74%
2.9
m/s
SE
Climate normal
+20
+15
8 September, Sunday. day, 19°; night, 13°; mostly clear
9
+20
+14
9 September, mon
+20
+14
Feels like
+15
753 mmHg
79%
2.5
m/s
E
Climate normal
+19
+14
9 September, Monday. day, 20°; night, 14°; partly cloudy
10
+21
+13
10 September, tue
+21
+13
Feels like
+15
753 mmHg
81%
2.8
m/s
S
Climate normal
+20
+15
10 September, Tuesday. day, 21°; night, 13°; clear
11
+21
+18
11 September, wed
+21
+18
Feels like
+16
751 mmHg
75%
4.5
m/s
S
Climate normal
+18
+14
11 September, Wednesday. day, 21°; night, 18°; clear
12
+19
+18
12 September, thu
+19
+18
Feels like
+17
750 mmHg
90%
5.1
m/s
S
Climate normal
+18
+14
12 September, Thursday. day, 19°; night, 18°; light rain
13
+23
+17
13 September, fri
+23
+17
Feels like
+21
752 mmHg
90%
3.1
m/s
S
Climate normal
+19
+12
13 September, Friday. day, 23°; night, 17°; partly cloudy
14
+25
+19
14 September, sat
+25
+19
Feels like
+21
752 mmHg
82%
3.9
m/s
SW
Climate normal
+18
+14
14 September, Saturday. day, 25°; night, 19°; clear
15
+26
+21
15 September, sun
+26
+21
Feels like
+22
748 mmHg
76%
6
m/s
SW
Climate normal
+15
+13
15 September, Sunday. day, 26°; night, 21°; clear
16
+20
+13
16 September, mon
+20
+13
Feels like
+19
747 mmHg
84%
3.4
m/s
NE
Climate normal
+17
+10
16 September, Monday. day, 20°; night, 13°; partly cloudy
17
+19
+12
17 September, tue
+19
+12
Feels like
+12
748 mmHg
64%
3.6
m/s
NE
Climate normal
+18
+12
17 September, Tuesday. day, 19°; night, 12°; clear
18
+20
+17
18 September, wed
+20
+17
Feels like
+14
750 mmHg
71%
5.1
m/s
SE
Climate normal
+18
+12
18 September, Wednesday. day, 20°; night, 17°; clear
19
+16
+15
19 September, thu
+16
+15
Feels like
+11
748 mmHg
88%
6.5
m/s
S
Climate normal
+19
+12
19 September, Thursday. day, 16°; night, 15°; rain
20
+15
+11
20 September, fri
+15
+11
Feels like
+10
748 mmHg
87%
5.2
m/s
W
Climate normal
+19
+14
20 September, Friday. day, 15°; night, 11°; light rain
21
+14
+9
21 September, sat
+14
+9
Feels like
+6
751 mmHg
56%
6.6
m/s
NW
Climate normal
+18
+14
21 September, Saturday. day, 14°; night, 9°; mostly clear
Average for 30 days
13
sunny days
7
days with precipitation
10
cloudy days
13 sunny days; 7 days with precipitation; 10 cloudy days;
72
%
air humidity
4.2
m/s
Wind
S
21
mm of precipitation
(3% of annual average)
air humidity 72%; 21 millimeters of precipitation (3% of annual average); Wind southerly 4.2 Meters per second
Forecast in graphs
Temperature
Humidity, %
Wind, m/s
Pressure, mmHg
SW
W
S
SW
N
E
SE
W
SW
W
SW
SW
W
S
S
SE
E
S
S
S
S
SW
SW
NE
NE
SE
S
W
NW
NW
24
Average data for 10 years
25
26
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
Daytime temperature
Night-time temperature