Acton (ON) Monthly Rainfall & Precipitation

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

Generally, Acton has a moderate amount of precipitation, averaging 944 mm (37 in) of rain/snowfall annually.

Monthly Precipitation Levels

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

Precipitation levels in Acton remain relatively steady throughout the year. June has the most rain, with 97 mm (3.8 in) over 10 days. In February, this drops slightly to 63 mm (2.5 in), making the city's climate fairly predictable.

June, the wettest month, has a maximum daytime temperature of 25°C (77°F). The city receives 261 hours of sunshine in this period. During the driest month February you can expect a temperature of 1°C (34°F). For more detailed insights into the city's temperatures, visit our Acton Temperature page.

Acton's average annual precipitation is 944 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.

Meanwhile, Buenos Aires, Argentina, enjoys a humid subtropical climate with 1000 mm (39 in) of annual rainfall, mostly in the summer.

In Tokyo, Japan, the average annual precipitation is 1528 mm (60 in), with significant summer rains due to typhoon season.

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.

• Mawsynram in India is noted as being the wettest place on earth, with over 11 meters (36 feet) of rain falling every year.
• In contrast, Antofagasta in Chile is among the driest places on the planet, getting less than 0.1mm (0.004 inches) per year, with some years recording virtually no rainfall.
• Nearly 1,650 thunderstorm cells are estimated over the planet at any given time.

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