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:
15°C
59.0°F
°C °F

Condition: Moderate Rain

Pressure: 977 hPa

Feel like: 14 °C

Temperature: 15°C

Cloud: 100%

Humidity: 95%

Wind: WNW - 11 km/h

Visibility: 3.4 km

Weather forecast

Sun
13 Sep
5°C / 11°C
Overcast
Mon
14 Sep
2°C / 16°C
Overcast
Tue
15 Sep
7°C / 17°C
Moderate Rain
Wed
16 Sep
6°C / 12°C
Overcast
Thu
17 Sep
5°C / 10°C
Slight Rain
Hourly forecast today:
13:00 PM
14° / 15°
14° / 15°
Moderate Rain
95% 25 km/h
14:00 PM
14° / 15°
14° / 15°
Slight Rain
95% 25 km/h
15:00 PM
13° / 15°
13° / 15°
Overcast
88% 24 km/h
16:00 PM
13° / 16°
13° / 16°
Partly Cloudy
84% 32 km/h
17:00 PM
12° / 16°
12° / 16°
Overcast
78% 32 km/h
18:00 PM
11° / 17°
11° / 17°
Partly Cloudy
71% 35 km/h
19:00 PM
11° / 16°
11° / 16°
Drizzle Dense Intensity
71% 33 km/h
20:00 PM
10° / 14°
10° / 14°
Overcast
78% 36 km/h
21:00 PM
10° / 13°
10° / 13°
Moderate Drizzle
82% 46 km/h
22:00 PM
10° / 14°
10° / 14°
Slight Rain
76% 50 km/h
23:00 PM
9° / 13°
9° / 13°
Mainly Clear
79% 44 km/h

30 Day Averages and Extremes

  • Average high 18.83°C
  • Average low 7.73°C
  • Hottest day 27°C (06 September 2026)
  • Coldest day 1°C (18 September 2026)
  • Average humidity 70.5%
  • Days with precipitation 21 days
  • Highest precipitation 44 mm (15 September 2026)

Yesterday's Data

  • Max: 25°C
  • Min: 7°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 mild weather in Ontario, with temperatures between 14ºC to 17ºC (57.2ºF to 62.6ºF), consider wearing:
- Light jacket (for cooler periods)
- Comfortable jeans or slacks
- Long-sleeve shirt or blouse
- Scarf (optional)

Temperature

Early
14°C / 18°C
Morning
15°C / 16°C
Afternoon
13°C / 15°C
Evening
10°C / 13°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 444
  • CO 118
  • NH3 0
  • NO2 0
  • O3 84
  • PM10 0
  • PM25 0
  • SO2 0
  • CH4 1,378

Sunrise / Sunset

11:11
00:02