Ottawa weather forecast

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Saturday
18th Sep

23

16

7
Sunday
19th Sep

22

12

10
Monday
20th Sep

25

11

12
Tuesday
21st Sep

25

16

5
Wednesday
22nd Sep

22

17

1

Last updated at 04:02 on Saturday 18th September 2021 GMT

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The 5-day weather forecast for Ottawa, Ontario is provided by the Swiss meteorological agency, MeteoBlue. Find out more about our data sources.

Ottawa weather forecast by day

Below are the detailed weather forecasts for Ottawa for the next 5 days.

Ottawa weather for Saturday 18th September 2021

Below is the Ottawa weather forecast for Saturday 18th September 2021. Expect scattered clouds in Ottawa, Ontario with a maximum temperature of 23°C, maximum UV of 5 (Moderate) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 16 kph from the north.

23
°C maximum temperature
16
°C minimum temperature
scattered clouds
7
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
0
no heat & humidity
16
kph wind from N

Ottawa weather for Sunday 19th September 2021

Below is the Ottawa weather forecast for Sunday 19th September 2021. Expect clear skies in Ottawa, Ontario with a maximum temperature of 22°C, maximum UV of 5 (Moderate) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 7 kph from the north.

22
°C maximum temperature
12
°C minimum temperature
clear skies
10
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
22
°C wind chill
7
kph wind from N

Ottawa weather for Monday 20th September 2021

Below is the Ottawa weather forecast for Monday 20th September 2021. Expect clear skies in Ottawa, Ontario with a maximum temperature of 25°C, maximum UV of 5 (Moderate) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 13 kph from the south-east.

25
°C maximum temperature
11
°C minimum temperature
clear skies
12
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
25
°C wind chill
13
kph wind from SE

Ottawa weather for Tuesday 21st September 2021

Below is the Ottawa weather forecast for Tuesday 21st September 2021. Expect mostly cloudy with light rain in Ottawa, Ontario with a maximum temperature of 25°C, maximum UV of 5 (Moderate) and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected with 35% chance of some rain and a moderate breeze of 20 kph from the south.

25
°C maximum temperature
16
°C minimum temperature
mostly cloudy with light rain
5
hours of sunshine
5
UV index (Moderate)
35
% chance of some rain
<2
mm of rainfall expected
25
°C wind chill
20
kph wind from S

Ottawa weather for Wednesday 22nd September 2021

Below is the Ottawa weather forecast for Wednesday 22nd September 2021. Expect mostly cloudy with rain in Ottawa, Ontario with a maximum temperature of 22°C, maximum UV of 1 (Low) and 1 hour of bright sunshine. There are 30-40 mm of rainfall expected with 95% chance of some rain and a gentle breeze of 15 kph from the south.