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:
23°C
73.4°F
°C °F

Condition: Overcast

Pressure: 990 hPa

Feel like: 21 °C

Temperature: 23°C

Cloud: 100%

Humidity: 42%

Wind: SSW - 15 km/h

Visibility: 46.0 km

Weather forecast

Wed
08 Jul
15°C / 28°C
Overcast
Thu
09 Jul
12°C / 23°C
Overcast
Fri
10 Jul
10°C / 26°C
Overcast
Sat
11 Jul
13°C / 19°C
Drizzle Dense Intensity
Sun
12 Jul
15°C / 28°C
Overcast
Hourly forecast today:
05:00 AM
9° / 23°
9° / 23°
Overcast
42% 39 km/h
06:00 AM
9° / 23°
9° / 23°
Overcast
41% 43 km/h
07:00 AM
7° / 22°
7° / 22°
Overcast
40% 45 km/h
08:00 AM
7° / 21°
7° / 21°
Overcast
41% 27 km/h
09:00 AM
6° / 20°
6° / 20°
Overcast
42% 30 km/h
10:00 AM
7° / 20°
7° / 20°
Overcast
44% 35 km/h
11:00 AM
10° / 21°
10° / 21°
Mainly Clear
51% 32 km/h
12:00 PM
15° / 21°
15° / 21°
Overcast
69% 26 km/h
13:00 PM
15° / 22°
15° / 22°
Partly Cloudy
64% 24 km/h
14:00 PM
13° / 24°
13° / 24°
Clear Sky
50% 24 km/h
15:00 PM
11° / 25°
11° / 25°
Clear Sky
42% 31 km/h

30 Day Averages and Extremes

  • Average high 26.07°C
  • Average low 12.9°C
  • Hottest day 33°C (30 June 2026)
  • Coldest day 8°C (17 July 2026)
  • Average humidity 55.2%
  • Days with precipitation 18 days
  • Highest precipitation 22 mm (18 July 2026)

Yesterday's Data

  • Max: 31°C
  • Min: 13°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 very hot weather in Ontario, with the high temperatures above 28ºC (82.4ºF), consider wearing:
- Lightweight t-shirt or tank top
- Loose and airy fabrics like linen or cotton
- UV-protective sunglasses
- Sunscreen for skin protection

Temperature

Early
8°C / 25°C
Morning
6°C / 20°C
Afternoon
11°C / 25°C
Evening
7°C / 28°C

Air quality

Good

Satisfactory air quality, minimal pollution, low risk

  • CO2 444
  • CO 92
  • NH3 0
  • NO2 0
  • O3 82
  • PM10 4
  • PM25 3
  • SO2 0
  • CH4 1,351

Sunrise / Sunset

09:35
01:57