Ontario has a humid continental climate, which is characterized by warm, humid summers and cold, snowy winters.

The province experiences four distinct seasons, with each season bringing its unique weather patterns.

Summer (June-August):

• Temperatures range from an average high of 25°C (77°F) to an average low of 15°C (59°F).

• The warmest months are July and August.

• Humidity levels are high, making for hot and muggy conditions.

• Thunderstorms are common, especially in the afternoon and evening.

Autumn (September-November):

• Temperatures gradually decrease from an average high of 20°C (68°F) in September to an average high of 5°C (41°F) in November.

• The nights become progressively cooler, with average lows dropping from 10°C (50°F) in September to -1°C (30°F) in November.

• The leaves of deciduous trees change colour and fall off.

• Precipitation increases, with rainfall and snowfall becoming more frequent.

Winter (December-February):

• Temperatures are cold, with average highs ranging from -1°C (30°F) to -9°C (15°F) and average lows ranging from -10°C (14°F) to -20°C (-4°F).

• Snowfall is heavy, with an average of 120 cm (47 in) of snow falling in Toronto and up to 300 cm (118 in) in some northern regions.

• Blizzards and extreme cold are common.

Spring (March-May):

• Temperatures gradually increase from an average high of 0°C (32°F) in March to an average high of 15°C (59°F) in May.

• The nights remain cool, with average lows ranging from -5°C (23°F) in March to 5°C (41°F) in May.

• Snowfall decreases and eventually stops, and the ground begins to thaw.

• Spring rains are common, helping to replenish groundwater and promote plant growth.