Climate Insights for Williams Lake
Cariboo Regional District, British Columbia, Canada
Climate Overview
The climate in Williams Lake is cool. The average annual temperature is 5°C and approximately 512 mm of precipitation falls per year. October is the wettest month, receiving around 55 mm of rainfall. Williams Lake is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, June. The coldest months are February, December, January, when temperatures can drop to -11°C. Snowfall occurs from January to December, with around 143cm accumulating over the season.The climate in Williams Lake is cool. The average annual temperature is 41°F and approximately 20.1 in of precipitation falls per year. October is the wettest month, receiving around 2.2 in of rainfall. Williams Lake is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, June. The coldest months are February, December, January, when temperatures can drop to 12°F. Snowfall occurs from January to December, with around 56in accumulating over the season.
Temperature
Williams Lake has a wide annual temperature range, spanning 36°C from the coldest to warmest months. The warmest month is August, when average highs reach 25°C and the mean temperature sits around 17°C. The coldest month is February, when overnight lows fall to -11°C and the daily average is -7°C. On average, daily temperatures fluctuate by about 11°C between overnight lows and afternoon highs. The sharpest temperature change occurs between September and October, with a 7°C shift in average temperatures.Williams Lake has a wide annual temperature range, spanning 66°F from the coldest to warmest months. The warmest month is August, when average highs reach 78°F and the mean temperature sits around 63°F. The coldest month is February, when overnight lows fall to 12°F and the daily average is 20°F. On average, daily temperatures fluctuate by about 20°F between overnight lows and afternoon highs. The sharpest temperature change occurs between September and October, with a 13°F shift in average temperatures.
Precipitation
Williams Lake is a relatively dry area, receiving approximately 512 mm of precipitation annually, which averages out to around 43 mm per month. The wettest month is October, averaging 55 mm of rainfall. June and September also tend to see above-average precipitation. The driest month is March, with just 25 mm. That's 30 mm less than October, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around. Snowfall is a regular feature from January to December, with around 143cm accumulating over the season. December typically sees the most snow at around 33cm.Williams Lake is a relatively dry area, receiving approximately 20.1 in of precipitation annually, which averages out to around 1.7 in per month. The wettest month is October, averaging 2.2 in of rainfall. June and September also tend to see above-average precipitation. The driest month is March, with just 1 in. That's 1.2 in less than October, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around. Snowfall is a regular feature from January to December, with around 56in accumulating over the season. December typically sees the most snow at around 13in.
Wind
Williams Lake is relatively calm, with an average annual wind speed of 7km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is November, averaging 9km/h, though still comfortable for most outdoor activities. The calmest conditions occur in July, with average winds dropping to 6km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 3km/h gap between the calmest and windiest months.Williams Lake is mildly breezy, with an average annual wind speed of 5mph. For context, sustained winds below 7mph are generally light, while anything above 16mph is considered strong. The windiest month is November, averaging 5mph, though still comfortable for most outdoor activities. The calmest conditions occur in July, with average winds dropping to 4mph, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 1mph gap between the calmest and windiest months.
Best Time to Visit
The best time to visit Williams Lake is during July and August, when the weather is most comfortable for travellers. During these months, average temperatures hover around 17°C with modest rainfall averaging 47 mm per month. By contrast, February can be quite cold with temperatures dropping to -11°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.The best time to visit Williams Lake is during July and August, when the weather is most comfortable for travellers. During these months, average temperatures hover around 63°F with modest rainfall averaging 1.9 in per month. By contrast, February can be quite cold with temperatures dropping to 12°F. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.
Monthly Climate Data
The table below shows monthly climate averages for Williams Lake based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.The table below shows monthly climate averages for Williams Lake based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Fahrenheit (°F). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in inches (in) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in miles per hour (mph). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.