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Weather in Calgary in September

September in Calgary brings average temperatures around 12°C and only 33 mm of rain.

Calgary
Average temp
12°C

5–19°C

Rainfall
33 mm

Not much rain

Sunshine

What to expect

Daytime

Days are mild.

Rain

Rain is usually light.

Evening

Evenings are cooler. A layer helps after sunset.

What to pack

  • A layer for cooler evenings

Where to stay in Calgary

Dates are a starting point for September.

All hotels in Calgary

Travel guides for Calgary

What to read before you book.

All travel guides in Calgary

Average weather in Calgary

TemperatureRainfall

Source: MeteostatPeriod: 1991-2020Checked: 2 Sept 2026353 places covered

Similar weather in September

Other destinations whose September averages sit close to this one.

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FAQs about Calgary

Climate averages for Calgary, 1991–2020.

The best time to visit Calgary is between May and October, the most comfortable stretch of the year on these averages.

July is the hottest month, with an average around 18°C.

June is the wettest month, with about 106 mm of rain.

No. These are 1991–2020 climate normals from Meteostat, not a live forecast. Actual weather in any given week can differ.