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Canada weather

Weather in Banff for September 2026

Your guide to Banff weather in September - trends and predictions

    Snow Forecast ❄️

  • Snowfall in Banff during September is quite rare, with fewer than 2 snowy days on average.
    According to Banff snow forecast for September 2026, 1 snowy day is expected in the next 2 weeks at Saturday, 12 September.

    • Temperatures

  • Until now, September 2026 in Banff is slightly cooler than the historical average by 0.7 °C.

  • The forecast for the next days in Banff predicts a temperature of 12.5 °C, which is cooler than the historical average.

  • In general, the average temperature in Banff at the beginning of September is 19.3 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 10.4 °C by the end of September.

    • Rain 🌧️

  • With an average of 4 rainy days, Banff experiences minimal rainfall in September.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
27
Dry days
Average rainy days
4
Rainy days
Average snowy days
0
Snow days
Average temperatures
16°/5°
Temperatures
Average wind speed
10 km/h
Avg max wind
Average humidity
64 %
Avg humidity

Banff Weather September

Move between months or click on a day
August
October
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Sunny
24°
2
Sunny
21°
3
Patchy rain possible
19°
4
Patchy rain possible
14°
5
Sunny
17°
6
Sunny
20°
7
Sunny
20°
8
Partly cloudy
19°
9
Sunny
19°
10
Patchy rain possible
13°
11
Patchy light rain with thunder
13°
12
Partly cloudy
8°
13
Overcast
12°
14
Light rain shower
5°
15
Light rain shower
5°
16
Sunny
10°
17
Sunny
15°
18
Sunny
18°
19
Sunny
20°
20
Overcast
19°
21
Overcast
18°
22
Overcast
16°
23
Overcast
16°
24
Light rain shower
7°
25
Overcast
6°
26
Partly cloudy
10°
27
Partly cloudy
11°
28
Overcast
16°
29
Partly cloudy
13°
30
Sunny
10°

Temperatures trend during September in Banff

See the weather trend as well as the moving average line

September weather in Banff day by day

Click on a date for more information
August October
Date Weather Temperatures Rain Snow More
1 Sept. Sunny
Sunny
 24° /10° 0 mm 0 cm
2 Sept. Sunny
Sunny
 21° /9° 1.8 mm 0 cm
3 Sept. Patchy rain possible
Patchy rain possible
 19° /8° 0.3 mm 0 cm
4 Sept. Patchy rain possible
Patchy rain possible
 14° /4° 1.6 mm 0 cm
5 Sept. Sunny
Sunny
 17° /6° 7.1 mm 0 cm
6 Sept. Sunny
Sunny
 20° /7° 9.1 mm 0 cm
7 Sept. Sunny
Sunny
 20° /9° 0.1 mm 0 cm
8 Sept. Partly cloudy
Partly cloudy
 19° /8° 0 mm 0 cm
9 Sept. Sunny
Sunny
 19° /7° 0.3 mm 0 cm
10 Sept. Patchy rain possible
Patchy rain possible
 13° /4° 8.5 mm 0 cm
11 Sept. Patchy light rain with thunder
Patchy light rain with thunder
 13° /4° 2.2 mm 0 cm
12 Sept. Partly cloudy
Partly cloudy
 8° /1° 16.5 mm 5.5 cm
13 Sept. Overcast
Overcast
 12° /-1° 3.1 mm 0 cm
14 Sept. Light rain shower
Light rain shower
 5° /2° 5.8 mm 0 cm
15 Sept. Light rain shower
Light rain shower
 5° /0° 1.8 mm 0 cm
16 Sept. Sunny
Sunny
 10° /-2° 0.6 mm 0 cm
17 Sept. Sunny
Sunny
 15° /1° 0 mm 0 cm
18 Sept. Sunny
Sunny
 18° /4° 0 mm 0 cm
19 Sept. Sunny
Sunny
 20° /6° 0 mm 0 cm
20 Sept. Overcast
Overcast
 19° /8° 0 mm 0 cm
21 Sept. Overcast
Overcast
 18° /7° 0 mm 0 cm
22 Sept. Overcast
Overcast
 16° /4° 0 mm 0 cm
23 Sept. Overcast
Overcast
 16° /4° 0.1 mm 0 cm
24 Sept. Light rain shower
Light rain shower
 7° /1° 8.4 mm 0 cm
25 Sept. Overcast
Overcast
 6° /0° 1.4 mm 0 cm
26 Sept. Partly cloudy
Partly cloudy
 10° /0° 0 mm 0 cm
27 Sept. Partly cloudy
Partly cloudy
 11° /-1° 0 mm 0 cm
28 Sept. Overcast
Overcast
 16° /0° 0 mm 0 cm
29 Sept. Partly cloudy
Partly cloudy
 13° /1° 0 mm 0 cm
30 Sept. Sunny
Sunny
 10° /-1° 0 mm 0 cm
Next
Important Notice
Our weather forecast for Banff in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Banff forecast closer to your planned date for the most up-to-date weather information.
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Banff in September - FAQ

What are the expected maximum and minimum temperatures in Banff during September?
Enjoy moderate daytime temperatures of up to 16° and cooler nights around 5°. Ideal for a range of outdoor activities, from hiking to city tours.

How much rainfall should be expected in Banff during September?
In September, Banff can expect light to moderate rainfall, totaling 32.8 mm across approximately 4 days. Occasional showers are possible, and planning ahead for them could be helpful.

What are the typical wind conditions in Banff during September?
The average wind speed in Banff during September is 10 km/h, suggesting breezy to windy conditions, depending on your activities.

Banff snow forecast September 2026

Track daily snowfall levels and discover Banff’s snowy potential this September ❄️

September rainfall patterns in Banff

Explore the daily rainfall trends and prepare for Banffs September weather 💧
Typically, Banff has 4 rainy days in September with a total of 32.8 mm of rainfall.

UV exposure in Banff during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️

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Location coordinates Where is Banff?

Get accurate weather forecasts for Banff, located at latitude 51.176 and longitude -115.57. Stay updated with localized weather information tailored for Banff.

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