Sudbury (ON) Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in Sudbury, Ontario, Canada. This average is based on long-term data collected between 1990 and 2020. Let's now guide you through the details for a complete overview.

Generally, Sudbury receives mid-range precipitation levels, with 929 mm (37 in) annually.

Monthly Precipitation Levels

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

Sudbury offers a pleasant mix of wetter and slightly drier months. The difference in precipitation between October (98 mm (3.9 in)) and February (51 mm (2 in)) is not too significant, making the climate enjoyable for visitors and residents alike.

October, the wettest month, has a maximum daytime temperature of 12°C (54°F). During the driest month February you can expect a temperature of -4°C (25°F). For more detailed insights into the city's temperatures, visit our Sudbury Temperature page.

Sudbury's average annual precipitation is 929 mm (37 in). Let's compare this to some popular worldwide tourist destinations:

The climate in San Francisco, USA, is influenced by coastal weather, with 469 mm (18 in) of rainfall mostly during the winter months.

Beijing, China, receives 560 mm (22 in) of annual precipitation, concentrated in the summer months.

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

Singapore, situated near the equator, gets 2581 mm (102 in) of rainfall annually, with no distinct dry season and consistent monthly precipitation.

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.

The proximity of a location to a large body of water can significantly affect its rainfall patterns:

• Ocean Influence: Coastal regions typically receive more rainfall due to the presence of moisture-laden winds from the ocean. These regions tend to have more humid climates and experience more frequent precipitation, especially in winter.
• Continental Climates: Areas further from the sea, such as inland or continental regions, experience less frequent rainfall and more extreme seasonal variations in precipitation.

• "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 Sudbury (ON)'s weather, including sunshine hours, humidity levels, and temperature data, visit our Sudbury (ON) Climate page.