Saint Marys (ON) Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in Saint Marys, Ontario, Canada. The figures are based on a 30-year period (1990–2020) to provide a reliable average. Let's now guide you through the details for a complete overview.

Saint Marys is known for its substantial rain/snowfall, with annual precipitation reaching 1088 mm (43 in).

Monthly Precipitation Levels

The average number of days each month with precipitation (> 0.2 mm (0.01 in))

Despite minor fluctuations, Saint Marys enjoys fairly consistent precipitation throughout the year. In June, you can expect around 109 mm (4.3 in) of precipitation, while in March, Saint Marys receives about 73 mm (2.9 in).

June, the wettest month, has a maximum daytime temperature of 25°C (77°F). During the driest month March you can expect a temperature of 6°C (43°F). For more detailed insights into the city's temperatures, visit our Saint Marys Temperature page.

Saint Marys's average annual precipitation is 1088 mm (43 in). Let's compare this to some popular worldwide tourist destinations:

In Lisbon, Portugal, the average annual precipitation is 774 mm (30 in), characterized by wet winters and dry summers typical of the Mediterranean climate.

In Seoul, South Korea, the average annual precipitation is 1237 mm (49 in), with most rain falling during the summer monsoon season.

Adelaide, Australia, enjoys 511 mm (20 in) of annual precipitation, with dry summers and wet winters.

Ho Chi Minh City, Vietnam, receives 1955 mm (77 in) of annual rainfall, with a pronounced wet season from May to November, typical of its tropical monsoon climate.

Precipitation amounts are measured using specific gauges installed at weather stations, collecting both rain and snow and any other type of precipitation. Rainfall is measured directly in millimeters, while that from snow and ice is obtained by melting it. Automated systems often incorporate heaters to make this easier.

Information from these stations is transmitted via Wi-Fi, satellite, GPS, or telephone connections to central monitoring networks. This information is immediately updated and integrated into weather models and forecasts.

• "Ginger" was the longest-lasting Atlantic tropical storm, which spun around the open ocean for 28 days in 1971.
• The world's largest snowflake was recorded in the Guinness Book of Records, at 38 cm (15 inches) wide and 20 cm (7.9 inches) thick. The snowflake fell at Fort Keogh, Montana, USA, on 28 January 1887.
• The greatest snowfall recorded was on Mt. Rainier, Washington State, USA, over 31.5 meters (103 feet) fell during the winter of 1972.

For more detailed information about Saint Marys (ON)'s weather, including sunshine hours, humidity levels, and temperature data, visit our Saint Marys (ON) Climate page.