Climate Insights for Clear Lake

The climate in Clear Lake is cool. The average annual temperature is 8°C and approximately 930mm of precipitation falls per year. August is the wettest month, receiving around 126mm of rainfall. Clear Lake is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, June, August. The coldest months are February, January, December, when temperatures can drop to -12°C. Snowfall occurs from January to December, with around 101cm accumulating over the season.

Clear Lake has a wide annual temperature range, spanning 39°C from the coldest to warmest months. The warmest month is July, when average highs reach 27°C and the mean temperature sits around 22°C. The coldest month is February, when overnight lows fall to -12°C and the daily average is -8°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs. The sharpest temperature change occurs between September and October, with a 8°C shift in average temperatures.

Clear Lake is a moderately rainy area, receiving approximately 930mm of precipitation annually, which averages out to around 77mm per month. The wettest month is August, averaging 126mm of rainfall. June and May also tend to see above-average precipitation. The driest month is January, with just 25mm. That's 101mm less than August, the wettest month. Precipitation varies noticeably between seasons, with the second half (July to December) of the year generally seeing more rainfall. Snowfall is a regular feature from January to December, with around 101cm accumulating over the season. December typically sees the most snow at around 23cm.

Clear Lake is mildly breezy, with an average annual wind speed of 18km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is April, averaging 21km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in July, with average winds dropping to 16km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 5km/h between the calmest and windiest months.

It is currently spring in Clear Lake, which began on March 20, 2026. Clear Lake is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in July at around 27°C, while the coldest stretch bottoms out in February near -12°C. Summer is next, beginning on June 21, 2026 — 91 days from now.

The best time to visit Clear Lake is during July and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 95mm per month. By contrast, February can be quite cold with temperatures dropping to -12°C. Despite being the best months overall, some rain is still likely — pack a waterproof layer and plan a mix of indoor and outdoor activities.

The table below shows monthly climate averages for Clear 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.