Châteauguay Heights (QC) Temperature by Month

The average annual maximum temperature in Châteauguay Heights, Quebec, Canada is 13°C (55°F), with daytime highs ranging from -4°C (25°F) in January to 27°C (81°F) in July. This page covers monthly averages, day-night differences, and how Châteauguay Heights compares to cities worldwide.

The climate in Châteauguay Heights is known for significant temperature differences throughout the year. At night, this contrast is just as clear, with lows ranging from 17°C (63°F) in July to -13°C (9°F) in January.

The chart below illustrates the average maximum day and minimum night temperatures in Châteauguay Heights by month:

The coolest part of the day is typically between 4 AM and 6 AM, while 3 PM is usually the warmest, when solar heating is at its peak. July, the city's warmest month, averages 272 hours of sunshine.

The chart below shows the average temperature throughout the year:

Châteauguay Heights's average annual maximum temperature is 13°C (55°F). To put that in context, here's how it compares to a few well-known destinations:

Seville, Spain averages 23°C (73°F) a year, one of the warmer cities in Western Europe, with long hot summers.

Zermatt, Switzerland averages just 4°C (39°F) annually due to its altitude, with very cold winters and cool summers even at its warmest.

Chicago, USA averages 15°C (59°F) annually, known for extreme seasonal swings, from bitterly cold winters to warm summers.

Melbourne, Australia averages 20°C (68°F) annually, known for unpredictable weather, with four seasons sometimes happening in one day.

Temperature alone doesn't tell the whole story, humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.

In the cooler months, when temperatures drop below 10°C, high humidity makes the cold feel more cutting than it would in dry conditions.

In Châteauguay Heights, January is the coolest month, with average highs of -4°C (25°F) and humidity around 68%, considered high. In July, the warmest month, temperatures average 27°C (81°F) with 57% humidity, conditions that feel moderate. For a full picture, see our humidity page.

Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.

The readings come from a range of sources, land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.

Whether a city sits on the coast or deep inland makes a significant difference to its climate. Coastal areas tend to have more stable temperatures year-round, large bodies of water absorb heat slowly in summer and release it gradually in winter, keeping extremes in check. Cities far from the sea don't benefit from that buffer, which is why continental climates tend to have hotter summers and colder winters than their coastal counterparts at the same latitude.

For more on Châteauguay Heights's weather, including monthly rainfall, sunshine hours, and humidity, visit our Châteauguay Heights climate page.