For this time of the year, Ottawa is experiencing slightly cooler temperatures, gently falling below the seasonal average.
According to the long-range forecast, temperatures are expected to be 17.6 °C which is -1.4 °C lower than the historical average.
Select a month and click on a day for more information:
Thursday
Oct 1
19° / 13°
Friday
Oct 2
15° / 7°
Saturday
Oct 3
18° / 6°
Sunday
Oct 4
17° / 8°
Monday
Oct 5
19° / 9°
Tuesday
Oct 6
19° / 9°
Wednesday
Oct 7
15° / 8°
Thursday
Oct 8
13° / 5°
Friday
Oct 9
12° / 5°
Saturday
Oct 10
14° / 6°
Sunday
Oct 11
16° / 6°
Monday
Oct 12
15° / 7°
Tuesday
Oct 13
13° / 7°
Wednesday
Oct 14
14° / 7°
Thursday
Oct 15
12° / 6°
Friday
Oct 16
13° / 5°
Saturday
Oct 17
11° / 5°
Sunday
Oct 18
11° / 4°
Monday
Oct 19
12° / 4°
Tuesday
Oct 20
12° / 6°
Wednesday
Oct 21
14° / 5°
Thursday
Oct 22
12° / 6°
Friday
Oct 23
13° / 6°
Saturday
Oct 24
10° / 4°
Sunday
Oct 25
10° / 4°
Monday
Oct 26
10° / 6°
Tuesday
Oct 27
10° / 3°
Wednesday
Oct 28
10° / 2°
Thursday
Oct 29
10° / 1°
Friday
Oct 30
9° / 3°
Saturday
Oct 31
10° / 4°
Ottawa 30 days weather forecast
Check out our estimated 30 days weather forecast for Ottawa, this data is based on the average weather in Ottawa in the last few years.
For a more accurate and detailed forecast, check out the 14 day weather for Ottawa next to the desired date.