Calgary weather in September 2025

The temperatures in Calgary in September are quite cold with temperatures between 7°C and 19°C, warm clothes are a must.

You can expect about 3 to 8 days of rain in Calgary during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.

Please note that Calgary can expect a few days of snow in September.

Our weather forecast can give you a great sense of what weather to expect in Calgary in September 2025.

If you’re planning to visit Calgary in the near future, we highly recommend that you review the 14 day weather forecast for Calgary before you arrive.

Temperatures

19° / 7°

Rainy Days

Snowy Days

Dry Days

Rainfall

Sun Hours

10.6

Hrs

Sun	Mon	Tue	Wed	Thu	Fri	Sat
	1 22° /11°	2 24° /10°	3 25° /10°	4 22° /11°	5 25° /10°	6 21° /9°
7 21° /8°	8 21° /9°	9 20° /8°	10 20° /9°	11 21° /8°	12 19° /9°	13 19° /9°
14 19° /8°	15 18° /7°	16 20° /6°	17 20° /8°	18 19° /9°	19 16° /8°	20 13° /5°
21 19° /4°	22 19° /7°	23 19° /8°	24 20° /8°	25 20° /8°	26 18° /8°	27 18° /6°
28 16° /5°	29 13° /5°	30 11° /4°

Explore the weather in Calgary in other months

Calgary annual weather

Month	Temperatures	Rainy Days	Dry Days	Snowy Days	Rainfall	Weather	More details
January	-4° / -11°	4	13	15	21 mm	Awful	Calgary in January
February	-4° / -12°	3	8	17	24 mm	Awful	Calgary in February
March	2° / -6°	4	12	15	31 mm	Awful	Calgary in March
April	8° / -1°	5	13	13	57 mm	Bad	Calgary in April
May	15° / 5°	7	21	3	80 mm	Bad	Calgary in May
June	20° / 9°	11	19	0	128 mm	Ok	Calgary in June
July	23° / 11°	8	23	0	93 mm	Good	Calgary in July
August	23° / 10°	5	26	0	66 mm	Perfect	Calgary in August
September	19° / 7°	3	25	2	38 mm	Ok	Calgary in September
October	10° / 1°	3	21	7	28 mm	Bad	Calgary in October
November	1° / -6°	2	15	12	23 mm	Awful	Calgary in November
December	-5° / -11°	3	13	15	28 mm	Awful	Calgary in December