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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the WordPatch weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Calgary’s weather is defined by its continental climate, bringing long, cold winters and short, warm summers with sudden weather changes possible year-round. Check the live forecast above for the most accurate current conditions.
What is the best time to visit Calgary for good weather?
The most reliable months for pleasant weather are July and August, when daytime highs average 20–25°C and the region enjoys up to 16 hours of daylight. This is also the busiest period for tourism and the peak of the school-holiday season. June and September offer milder conditions with fewer crowds, though rain is more likely.
What should I pack for a trip to Calgary?
Given Calgary’s nickname “Canada’s weather rollercoaster,” layering is essential. In summer, pack a mix of t-shirts, a light jacket and waterproofs for sudden showers. For winter (November to March), bring a heavy coat, thermal layers, hat, gloves and sturdy boots, as temperatures can drop below -20°C. Sunglasses and sunscreen are useful year-round due to strong UV at altitude.
How does Calgary’s weather compare to the UK?
Unlike the UK’s maritime climate, Calgary experiences dry, cold winters and much warmer, sunnier summers. The city receives over 300 days of sunshine annually, far exceeding typical UK levels. However, its elevation (about 1,050 metres) means cooler nights even in summer, and the famous Chinook winds can rapidly raise winter temperatures by 10–20°C within hours.
For a quick look at conditions over the coming period, you can check calgary weather 14 day and calgary weather hourly details. For broader planning, calgary weather monthly averages and calgary weather yearly patterns help, as do projections for calgary weather next 30 days. Specific outlooks for calgary weather tomorrow and calgary weather in summer are also available on our forecast page. Temperatures are given in calgary weather in celsius throughout.
Does Calgary have snow in summer?
It is extremely rare for snow to settle in summer (June–August), though light snow can occur in late May or early September. The last significant June snowfall in Calgary was in 1999. Summer stays reliably above freezing, even at night.
Is Calgary windy all year?
Calgary is one of Canada’s windiest cities, especially in winter. The Chinook winds can bring gusts over 100 km/h. Summer is generally calmer, but afternoon breezes are common. A windproof jacket is a wise addition to any packing list.
What is the UV index like in Calgary?
Calgary’s high elevation and clear skies lead to a moderate-to-high UV index, even on cloudy days. In summer, the UV index frequently reaches 7 or 8 (high/very high). Sun protection is recommended from April to September, especially between 11am and 3pm.
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Compare Calgary’s climate with other destinations on our UK weather hub, or see how it differs from Birmingham Weather, Liverpool Weather, Glasgow Weather, Bristol Weather and Sheffield Weather.