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Canada weather

Weather in Ottawa for October 2025

Your guide to Ottawa weather in October - trends and predictions

    Official Weather Alert ⚠️

  • Weather Warning - See hour by hour.

    • Snow Forecast ❄️

  • With an average of 2 snowy days, Ottawa usually enjoys a light touch of snow in October.
    According to Ottawa snow forecast for October 2025, no snow is expected until the end of the month.

    • Temperatures

  • Until now, October 2025 in Ottawa has been nearly identical to the historical average, with a temperature of 15.4 °C (showing only a slight deviation of 0.4 °C).

  • The forecast for the upcoming days in Ottawa predicts a temperature of 7.3 °C, which is slightly above the historical average.

  • In general, the average temperature in Ottawa at the beginning of October is 21.6 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 9.1 °C by the end of October.

    • Rain 🌧️

  • The climate of Ottawa in October is notably wet, with an average of 13 rainy days, and a total of 85.1 mm of precipitation.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
16
Dry days
Average rainy days
13
Rainy days
Average snowy days
2
Snow days
Average temperatures
14°/6°
Temperatures
Average wind speed
17 km/h
Avg max wind
Average humidity
76 %
Avg humidity

Ottawa Weather October

Move between months or click on a day
September
November
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Mist
19°
2
Mist
20°
3
Mist
25°
4
Mist
25°
5
Overcast
25°
6
Light rain shower
21°
7
Light rain shower
16°
8
Patchy rain possible
13°
9
Light rain shower
11°
10
Light rain shower
12°
11
Light rain shower
15°
12
Patchy rain possible
14°
13
Overcast
11°
14
Patchy rain possible
14°
15
Overcast
9°
16
Patchy rain possible
13°
17
Overcast
13°
18
Patchy rain possible
15°
19
Overcast
17°
20
Light rain shower
15°
21
Light rain shower
17°
22
Light rain
13°
23
Overcast
12°
24
Overcast
10°
25
Light rain
11°
26
Light drizzle
11°
27
Light drizzle
11°
28
Patchy rain possible
10°
29
Overcast
9°
30
Weather Alert Moderate rain
6°
31
Heavy rain
6°

Temperatures trend during October in Ottawa

See the weather trend as well as the moving average line

October weather in Ottawa day by day

Click on a date for more information
September November
Date Weather Temperatures Rain Snow More
1 Oct. Mist
Mist
 19° /10° 0 mm 0 cm
2 Oct. Mist
Mist
 20° /9° 10.1 mm 0 cm
3 Oct. Mist
Mist
 25° /9° 0 mm 0 cm
4 Oct. Mist
Mist
 25° /12° 0 mm 0 cm
5 Oct. Overcast
Overcast
 25° /13° 0 mm 0 cm
6 Oct. Light rain shower
Light rain shower
 21° /11° 6.5 mm 0 cm
7 Oct. Light rain shower
Light rain shower
 16° /9° 18.4 mm 0 cm
8 Oct. Patchy rain possible
Patchy rain possible
 13° /5° 2 mm 0 cm
9 Oct. Light rain shower
Light rain shower
 11° /3° 0.6 mm 0.3 cm
10 Oct. Light rain shower
Light rain shower
 12° /4° 0.9 mm 0 cm
11 Oct. Light rain shower
Light rain shower
 15° /6° 1.8 mm 0 cm
12 Oct. Patchy rain possible
Patchy rain possible
 14° /6° 1.3 mm 0 cm
13 Oct. Overcast
Overcast
 11° /5° 0.4 mm 0 cm
14 Oct. Patchy rain possible
Patchy rain possible
 14° /5° 0 mm 0 cm
15 Oct. Overcast
Overcast
 9° /5° 0.1 mm 0 cm
16 Oct. Patchy rain possible
Patchy rain possible
 13° /4° 0 mm 0 cm
17 Oct. Overcast
Overcast
 13° /4° 0 mm 0 cm
18 Oct. Patchy rain possible
Patchy rain possible
 15° /5° 0 mm 0 cm
19 Oct. Overcast
Overcast
 17° /6° 0 mm 0 cm
20 Oct. Light rain shower
Light rain shower
 15° /9° 50.4 mm 0 cm
21 Oct. Light rain shower
Light rain shower
 17° /8° 4.3 mm 0 cm
22 Oct. Light rain
Light rain
 13° /7° 5.1 mm 0 cm
23 Oct. Overcast
Overcast
 12° /5° 4.4 mm 0 cm
24 Oct. Overcast
Overcast
 10° /3° 0 mm 0 cm
25 Oct. Light rain
Light rain
 11° /5° 2.7 mm 0 cm
26 Oct. Light drizzle
Light drizzle
 11° /6° 3.2 mm 0 cm
27 Oct. Light drizzle
Light drizzle
 11° /5° 0.6 mm 0 cm
28 Oct. Patchy rain possible
Patchy rain possible
 10° /2° 0.4 mm 0 cm
29 Oct. Overcast
Overcast
 9° /1° 1.7 mm 0 cm
30 Oct. Moderate rain
Moderate rain
 6° /4° 18.3 mm 0 cm
31 Oct. Heavy rain
Heavy rain
 6° /1° 52.5 mm 0 cm
Next
Important Notice
Our weather forecast for Ottawa in October is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Ottawa forecast closer to your planned date for the most up-to-date weather information.
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Ottawa in October - FAQ

What are the expected maximum and minimum temperatures in Ottawa during October?
During October, expect a variety of temperatures with highs around 14° and lows near 6°, suitable for diverse activities and preferences.
How much rainfall should be expected in Ottawa during October?
Moderate rainfall is anticipated in Ottawa during October, with a total of 85.1 mm spread over approximately 13 days. Considering plans for rainy days is advisable.
Will it snow in Ottawa in October 2025?
Ottawa experiences an average snowfall of 0.885 cm during October, occurring over 2 days.
What are the typical wind conditions in Ottawa during October?
The average wind speed in Ottawa during October is 17 km/h, suggesting breezy to windy conditions, depending on your activities.

Ottawa snow forecast October 2025

Track daily snowfall levels and discover Ottawa’s snowy potential this October ❄️

October rainfall patterns in Ottawa

Explore the daily rainfall trends and prepare for Ottawas October weather 💧

UV exposure in Ottawa during October

Stay informed about UV levels for safe outdoor activities throughout the month of October ☀️
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Get accurate weather forecasts for Ottawa, located at latitude 45.411 and longitude -75.698. Stay updated with localized weather information tailored for Ottawa.

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