Williams Lake (BC) Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in Williams Lake, British Columbia, Canada. The numbers reflect climate data gathered over a 30-year period, from 1990 to 2020. Let's explore the details to provide you with a complete overview.

Generally, Williams Lake receives mid-range precipitation levels, with 518 mm (20 in) annually. The distribution varies significantly throughout the year, with a distinct dry season during certain months, as shown in our charts below.

Monthly Precipitation Levels

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

Williams Lake can be quite wet during June, receiving approximately 62 mm (2.4 in) of precipitation over 12 rainy days.

In contrast March, experiences much drier conditions, with 27 mm (1.1 in) of snow/rainfall, spread across 8 snowy/rainy days.

June, the wettest month, has a maximum daytime temperature of 21°C (70°F). During the driest month March you can expect a temperature of 7°C (45°F). For more detailed insights into the city's temperatures, visit our Williams Lake Temperature page.

Annual Rainfall in Canada: City Comparison

The map below shows the annual precipitation across Canada. You can also select the different months in case you are interested in a specific month.

Annual

Annual

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Legend

heavy rainfall

high

moderate

low

almost none

Heavy annual rainfall has been defined as more than 1000 mm (39 in) precipitation. High: 600 mm (24 in) to 1000 mm (39 in). Moderate: 250 mm (9.8 in) to 600 mm (24 in). Low: less than 250 mm (9.8 in).

Williams Lake vs World: Rainfall Compared

Williams Lake's average annual precipitation is 518 mm (20 in). Let's compare this to some popular worldwide tourist destinations:

Chicago, USA, sees an annual precipitation of 1062 mm (42 in), with rain and snow contributing to its humid climate.

Osaka, Japan, experiences 1507 mm (59 in) of rainfall annually, spread across the year with wetter summers.

Perth, Australia, receives 565 mm (22 in) of rainfall annually, mostly during the winter months.

Kuala Lumpur, Malaysia, receives 2529 mm (100 in) of annual rainfall, characteristic of its equatorial tropical rainforest climate, with consistent rainfall throughout the year and peak months during March and November.

How is Precipitation Measured?

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.

Rainy Seasons: Many parts of the world have well-defined wet seasons where precipitation is distinctly higher. These are normally accompanied by lush vegetation and temperature patterns.

Dry Seasons: In areas where the climate is either desert or Mediterranean, the amount of precipitation is drastically reduced, leading to a shortage of water and arid conditions.

Interesting weather facts

The U.S. has a significant number of thunderstorms every year, with over 14.6 million taking place across the world annually.
Approximately 70% of lightning bolts strike land rather than oceans.
A storm named John was the longest-lasting Pacific tropical storm, continuing for 31 days. As it crossed the dateline twice, it changed status from a hurricane to a typhoon and back to a hurricane.

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

Current rainfall in Williams Lake (BC)

10-Day Forecast