Temperature in Thousand Islands National Park in December

Daytime highs, nighttime lows and the warmest cities in Thousand Islands National Park, Canada this December.

Thousand Islands National Park, Canada, a region in Canada, typically experiences very cold weather in December, with maximum daytime temperatures around 1°C (34°F) and nighttime temperatures around -6°C (21°F) in Brockville. During December, winter is in full swing.

What is the temperature of the different cities in Thousand Islands National Park, Canada in December?

Find the average daytime temperatures in December for the most popular destinations in Thousand Islands National Park on the map below. Click on a destination dot for more detailed information.

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 Thousand Islands National Park, check out our Thousand Islands National Park's climate page.

See also: Thousand Islands National Park weather by month.

Best Places to Visit in Thousand Islands National Park in December

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Thousand Islands National Park.

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 December: blue is cold, red is hot.

See all December weather averages, cities and regions in Thousand Islands National Park

Thousand Islands National Park temperatures in December: frequently asked questions

How hot does it get in Thousand Islands National Park, Canada in December?

Brockville averages a daytime high of 1°C (34°F) in December, which is very low for Thousand Islands National Park, Canada.

How cold does it get at night in Thousand Islands National Park, Canada in December?

After dark, Brockville cools to about -6°C (21°F) on an average December night.

How much sun does Thousand Islands National Park, Canada get in December?

Most areas see fewer sunny days, with a projection of about 75 hours of sunshine in Brockville. This reduced sunlight makes it ideal for those who prefer cooler, overcast conditions over bright sunny days.

Interested in more climate information?

We have much more information about the climate in Thousand Islands National Park.

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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