Saint-Hyacinthe (QC) Weather & Climate: Best Time to Visit

Visitors to Saint-Hyacinthe can expect significant temperature changes throughout the year. Typically, average maximum daytime temperatures range from a comfortable 27°C (81°F) in July to a very cold -4°C (25°F) in the coolest month, January.

Nights vary from 15°C (59°F) in July to around -14°C (7°F) during the colder months.

Check out our detailed temperature page for more information.

Temperature ranges by month

Saint-Hyacinthe is known for its substantial rain/snowfall, with annual precipitation reaching 1192 mm (47 in). Precipitation levels in Saint-Hyacinthe remain relatively steady throughout the year. June has the most rain, with 119 mm (4.7 in) over 13 days. In the driest month February, this drops slightly to 74 mm (2.9 in), making the city's climate fairly predictable. For more details, please visit our Saint-Hyacinthe Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

For those who appreciate different seasons, Saint-Hyacinthe serves as an ideal destination. Expect longer, more sun-filled days in July with an average of 9.1 hours of sunshine daily, and embrace the darker days in December, offering only 2.7 hours of daily sunlight.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

Daily percentage of sunshine

The relative humidity is high throughout the year in Saint-Hyacinthe.

The city experiences its highest humidity in December, reaching 71%. In May, the humidity drops to its lowest level at 51%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year