Climate Insights for Cardston

The climate in Cardston is cool. The average annual temperature is 5°C and approximately 486mm of precipitation falls per year. May is the wettest month, receiving around 79mm of rainfall. Cardston 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, January, December, when temperatures can drop to -11°C. Cardston experiences heavy snowfall, typically from January through December.

Cardston has a wide annual temperature range, spanning 38°C from the coldest to warmest months. The warmest month is August, when average highs reach 27°C and the mean temperature sits around 18°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 8°C shift in average temperatures.

Cardston is a relatively dry area, receiving approximately 486mm of precipitation annually, which averages out to around 40mm per month. The wettest month is May, averaging 79mm of rainfall. June and April also tend to see above-average precipitation. The driest month is January, with just 21mm. That's 58mm less than May, the wettest month. Precipitation varies noticeably between seasons, with the first half (January to June) of the year generally seeing more rainfall. Cardston receives heavy snowfall, accumulating around 203cm annually from January through December. The snowiest month is February, with approximately 32cm. Winter travel should account for significant snow cover.

Cardston is relatively calm, with an average annual wind speed of 3km/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 4km/h, though still comfortable for most outdoor activities. The calmest conditions occur in August, with average winds dropping to 3km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 1km/h gap between the calmest and windiest months.

It is currently summer in Cardston, which began on June 21, 2026. Cardston 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 August at around 27°C, while the coldest stretch bottoms out in February near -11°C. Autumn is next, beginning on September 23, 2026 — 92 days from now.

The best time to visit Cardston is during July and August, when the weather is most comfortable for travellers. During these months, average temperatures hover around 18°C with modest rainfall averaging 29mm per month. By contrast, February can be quite cold with temperatures dropping to -11°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

The table below shows monthly climate averages for Cardston 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.