Ontario, Canada Weather

  1. Ontario, Canada Weather
  2. Current conditions
  3. Weather forecast
  4. Averages and extremes
  5. Yesterday's Data
  6. Temperature and possibility of rain in Ontario over the next 12 hours
  7. Temperature and possibility of rain in Ontario in the coming days
  8. Rainfall in Ontario in the coming days
  9. Ontario Weather Summary
  10. Weather averages by month
  11. Ontario's weather
  12. Frequently asked questions
  13. Comments
Ontario, Weather
(Photo by Yalın Kaya on Unsplash)

Current conditions

Updated:
9°C
48.2°F
°C °F

Condition: Mainly Clear

Pressure: 997 hPa

Feel like: 4 °C

Temperature: 9°C

Cloud: 34%

Humidity: 46%

Wind: WNW - 20 km/h

Visibility: 40.3 km

Weather forecast

Thu
15 Oct
0°C / 6°C
Moderate Drizzle
Fri
16 Oct
-2°C / 4°C
Drizzle Dense Intensity
Sat
17 Oct
-1°C / 6°C
Overcast
Sun
18 Oct
0°C / 14°C
Overcast
Mon
19 Oct
6°C / 12°C
Overcast
Hourly forecast today:
21:00 PM
-1° / 9°
-1° / 9°
Mainly Clear
46% 36 km/h
22:00 PM
-1° / 9°
-1° / 9°
Clear Sky
46% 33 km/h
23:00 PM
-2° / 7°
-2° / 7°
Clear Sky
50% 31 km/h
00:00 AM
-2° / 5°
-2° / 5°
Mainly Clear
56% 21 km/h
01:00 AM
-1° / 5°
-1° / 5°
Partly Cloudy
58% 20 km/h
02:00 AM
-1° / 4°
-1° / 4°
Overcast
66% 22 km/h
03:00 AM
0° / 5°
0° / 5°
Overcast
64% 18 km/h
04:00 AM
0° / 5°
0° / 5°
Overcast
64% 25 km/h
05:00 AM
-1° / 4°
-1° / 4°
Clear Sky
66% 16 km/h
06:00 AM
-1° / 2°
-1° / 2°
Mainly Clear
71% 15 km/h
07:00 AM
-1° / 1°
-1° / 1°
Clear Sky
79% 14 km/h

30 Day Averages and Extremes

  • Average high 8.63°C
  • Average low 1.33°C
  • Hottest day 22°C (30 September 2026)
  • Coldest day -2°C (13 October 2026)
  • Average humidity 77.73%
  • Days with precipitation 21 days
  • Highest precipitation 41 mm (04 October 2026)

Yesterday's Data

  • Max: 6°C
  • Min: -2°C
  • Total Precipitation: 0 mm

Temperature and possibility of rain in Ontario over the next 12 hours

Temperature and possibility of rain in Ontario in the coming days

Rainfall in Ontario in the coming days

Ontario Climate Summary

Ontario features a Subartic, severe winter, no dry season, cool summer (Köppen classification: Dfc), with an average annual temperature of 2.61ºC (36.7ºF), which is about 0.52% higher than the national average for Canada. Annually, the city experiences approximately 40.94 millimeters (1.61 inches) of rainfall, spread across 99.45 rainy days, accounting for 27.25% of the year.

Longitude 51.253775
Latitude -85.323214
Yearly high temperature 5.73ºC (42.31ºF)
Yearly low temperature -3.07ºC (26.47ºF)
Hottest month June 20.53ºC (68.95ºF)
Coldest month January -20.82ºC (-5.48ºF)
Yearly precip 40.94mm (1.61in)
Days with rainfall 99.45 days (27.25%)
Driest month February (93.43%)
Wettest month September (78.45%)

Weather averages by month

Month High / Low (°C) Rain
January -12.89° / -20.82° 7.27 days
February -11.46° / -19.89° 6.09 days
March -3.99° / -12.13° 8.36 days
April 3.16° / -5.18° 8.09 days
May 14.6° / 3.55° 8.91 days
June 20.53° / 8.78° 8.91 days
July 24.1° / 12.26° 8.64 days
August 22.28° / 11.37° 9.64 days
September 15.66° / 6.63° 8.27 days
October 7.34° / 0.95° 8.91 days
November -1.44° / -6.84° 9.45 days
December -9.1° / -15.56° 6.91 days

Ontario's weather

Frequently asked questions

1. What is the hottest month in Ontario?

June has the highest average monthly temperature (daily mean of 20.53ºC) and January are the coolest (daily mean of -20.82ºC).

2. What should I wear in Ontario today?

For today's cool weather in Ontario, with temperatures between 7ºC to 10ºC (44.6ºF to 50.0ºF), you should consider wearing:
- Light scarf or wrap
- Thin gloves (optional for early mornings or late evenings)
- Light jacket or cardigan
- Casual shoes or sneakers

Temperature

Early
-2°C / 2°C
Morning
1°C / 3°C
Afternoon
2°C / 6°C
Evening
-1°C / 9°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 436
  • CO 105
  • NH3 0
  • NO2 0
  • O3 68
  • PM10 2
  • PM25 2
  • SO2 0
  • CH4 1,375

Sunrise / Sunset

12:03
22:50