Climate Insights for Cardston

The climate in Cardston is cool. The average annual temperature is 6°C and approximately 462mm of precipitation falls per year. May is the wettest month, receiving around 73mm of rainfall. Cardston is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, August, June. The coldest months are February, December, January, when temperatures can drop to -10°C. Snowfall occurs from January to December, with around 144cm accumulating over the season.

Cardston has a wide annual temperature range, spanning 36°C from the coldest to warmest months. The warmest month is July, when average highs reach 26°C and the mean temperature sits around 18°C. The coldest month is February, when overnight lows fall to -10°C and the daily average is -6°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.

Cardston is a relatively dry area, receiving approximately 462mm of precipitation annually, which averages out to around 38mm per month. The wettest month is May, averaging 73mm of rainfall. June and April also tend to see above-average precipitation. The driest month is January, with just 19mm. That's 53mm 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. Snowfall is a regular feature from January to December, with around 144cm accumulating over the season. February typically sees the most snow at around 21cm.

Cardston is mildly breezy, with an average annual wind speed of 19km/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 22km/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 6km/h between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 20km/h in winter, 18km/h in spring, 17km/h in summer, 20km/h in autumn.

It is currently spring in Cardston, which began on March 20, 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 July at around 26°C, while the coldest stretch bottoms out in February near -10°C. Summer is next, beginning on June 21, 2026 — 89 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 34mm per month. By contrast, February can be quite cold with temperatures dropping to -10°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

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.