Temperature in Ontario in January

Daytime highs, nighttime lows and the warmest cities in Ontario, Canada this January.

Ontario, Canada, a region in Canada, experiences very low average maximum daytime temperatures in January, ranging from -12°C (10°F) in Red Lake to 1°C (34°F) in Saint Catharines. Nighttime temperatures generally drop to -6°C (21°F) in Saint Catharines and -21°C (-6°F) in Red Lake. January is part of the winter season On average, it is one of the coldest months of the year.

What is the temperature of the different cities in Ontario, Canada in January?

To get a sense of January's typical temperatures in the key spots of Ontario, explore the map below. Click on a point for an in-depth look.

Select a Month

Check the conditions for any month of the year.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

For a detailed overview over the year and the best time to visit Ontario, check out our Ontario's climate page.

See also: Ontario weather by month.

Best Places to Visit in Ontario in January

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Ontario.

Conditions Temperatures Precipitation
Avg daytime high -5°C (23°F) cold → 32°C (90°F) hot

Marker color shows the average daytime high temperature in January: blue is cold, red is hot.

Ontario temperatures in January: frequently asked questions

How hot does it get in Ontario, Canada in January?

Toronto averages a daytime high of 1°C (34°F) in January, which is very low for Ontario, Canada.

How cold does it get at night in Ontario, Canada in January?

Average overnight lows in Ontario, Canada during January sit near -7°C (19°F) in Toronto.

What is the warmest city in January in Ontario, Canada?

According to our recent database analysis, Saint Catharines is the warmest city. It experiences an average maximum daytime temperature of approximately 1°C (34°F) and rarely drops below -6°C (21°F) during the night.

What is the coldest city in January in Ontario, Canada?

According to our data, Red Lake holds the title for the coldest city in Ontario, Canada in January. It experiences maximum temperatures of approximately -12°C (10°F) and drops to lows of about -21°C (-6°F) during the night.

How much sun does Ontario, Canada get in January?

Toronto experiences limited sunny days, amounting to roughly 85 hours of sunshine. This makes it perfect for those who lean towards cooler, cloudier settings rather than intense sunlit days.

Interested in more climate information?

We have much more information about the climate in Ontario.

Weather and climate has detailed information for every country in the world. Are you going to Canada? Get detailed historical weather averages for many cities in Canada.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

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