Weather in Ottawa in Autumn
| September | October | November | ||||
| Average day temperature: | 68.5°F | 54.5°F | 39.3°F | |||
| Average night temperature: | 54.8°F | 45.0°F | 32.5°F | |||
| Number of sunny days: | 12 days | 8 days | 8 days | |||
| Day length: | 11.7 - 13.3 h. | 10.2 - 11.7 h. | 9.0 - 10.1 h. | |||
| Number of rainy days: | 4 days | 5 days | 2 days | |||
| Precipitation totals: | 1.8 in. | 2.8 in. | 1.8 in. | |||
Day & Night air temperature, °F
September
October
November
0
11
22
33
44
55
66
77
88
38.8
54.4
68.3
32.4
44.9
54.8
| Day temperature | Night temperature |
Precipitation total, in.
September
October
November
0.0
0.5
1.0
1.5
2.1
2.6
3.1
3.6
4.1
2.1
3
1.8
Sunny, partly cloudy and cloudy days
September
October
November
0
5
10
15
20
25
30
35
16
15
9
8
9
10
6
7
11
| Cloudy days | Partly cloudy days | Sunny days |
Wind speed, mph
September
October
November
0.0
1.4
2.8
4.2
5.7
7.1
8.5
9.9
11.3
8.2
7.5
6.6
Average sunny hours
September
October
November
0
1
2
3
4
5
6
7
4.3
4.8
Sunny hours are calculated based on the average daily number of hours while sunlight can reach the ground. It depends on day length and cloudiness during the day.
Best time for vacation in Ottawa
Ottawa on a weather map
Leaflet | Tiles © Esri
Places in Canada:
Name
°F
24 Hours Forecast
Ottawa
Local time: 02:27
April 01, tuesday
0300
28°F
SE
11 mph
11 mph
0600
27°F
SE
14 mph
14 mph
0900
25°F
SE
16 mph
16 mph
1200
34°F
SE
14 mph
14 mph
1500
37°F
SE
15 mph
15 mph
1800
34°F
SE
12 mph
12 mph
2100
25°F
S
7 mph
7 mph
April 02, wednesday
0000
21°F
S
6 mph
6 mph
