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Canada weather

Weather in Banff for September 2026

Your guide to Banff weather in September - trends and predictions

    Temperatures

  • In general, the average temperature in Banff at the beginning of September is 19.7 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 14.1 °C by the end of September.

    • Rain 🌧️

  • Banff experiences moderate rainfall in September, with an average of 7 rainy days and a total precipitation of 51.4 mm.

    • More

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Average dry days
23
Dry days
Average rainy days
7
Rainy days
Average snowy days
0
Snow days
Average temperatures
14°/4°
Temperatures
Average wind speed
11 km/h
Avg max wind
Average humidity
66 %
Avg humidity

Banff Weather September

Move between months or click on a day
August
October
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Sunny
23°
2
Sunny
20°
3
Patchy rain possible
20°
4
Patchy rain possible
13°
5
Sunny
19°
6
Sunny
21°
7
Sunny
22°
8
Partly cloudy
18°
9
Sunny
18°
10
Patchy rain possible
12°
11
Patchy light rain with thunder
15°
12
Light rain shower
14°
13
Patchy rain possible
14°
14
Thundery outbreaks possible
13°
15
Patchy rain possible
12°
16
Sunny
16°
17
Light rain
20°
18
Cloudy
18°
19
Overcast
17°
20
Thundery outbreaks possible
15°
21
Cloudy
14°
22
Thundery outbreaks possible
11°
23
Overcast
16°
24
Cloudy
21°
25
Sunny
18°
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 UV More
1 Sept. Sunny
Sunny
 23° /10° 0 mm 6
2 Sept. Sunny
Sunny
 20° /10° 1.3 mm 6
3 Sept. Patchy rain possible
Patchy rain possible
 20° /10° 0.3 mm 5
4 Sept. Patchy rain possible
Patchy rain possible
 13° /4° 0.1 mm 3
5 Sept. Sunny
Sunny
 19° /8° 0 mm 5
6 Sept. Sunny
Sunny
 21° /9° 0 mm 6
7 Sept. Sunny
Sunny
 22° /11° 0 mm 6
8 Sept. Partly cloudy
Partly cloudy
 18° /9° 0 mm 5
9 Sept. Sunny
Sunny
 18° /7° 0.5 mm 5
10 Sept. Patchy rain possible
Patchy rain possible
 12° /5° 9.7 mm 3
11 Sept. Patchy light rain with thunder
Patchy light rain with thunder
 15° /5° 1 mm 4
12 Sept. Light rain shower
Light rain shower
 14° /4° 8.6 mm 3
13 Sept. Patchy rain possible
Patchy rain possible
 14° /6° 0.2 mm 4
14 Sept. Thundery outbreaks possible
Thundery outbreaks possible
 13° /5° 0.1 mm 3
15 Sept. Patchy rain possible
Patchy rain possible
 12° /4° 2.3 mm 3
16 Sept. Sunny
Sunny
 16° /5° 0 mm 5
17 Sept. Light rain
Light rain
 20° /7° 8.7 mm 5
18 Sept. Cloudy
Cloudy
 18° /5° 0 mm 5
19 Sept. Overcast
Overcast
 17° /4° 0 mm 5
20 Sept. Thundery outbreaks possible
Thundery outbreaks possible
 15° /3° 0 mm 4
21 Sept. Cloudy
Cloudy
 14° /1° 0 mm 4
22 Sept. Thundery outbreaks possible
Thundery outbreaks possible
 11° /0° 0 mm 4
23 Sept. Overcast
Overcast
 16° /1° 0 mm 5
24 Sept. Cloudy
Cloudy
 21° /5° 0 mm 6
25 Sept. Sunny
Sunny
 18° /5° 0 mm 5
26 Sept. Partly cloudy
Partly cloudy
 10° /0° 0 mm 4
27 Sept. Partly cloudy
Partly cloudy
 11° /-1° 0 mm 4
28 Sept. Overcast
Overcast
 16° /0° 0 mm 4
29 Sept. Partly cloudy
Partly cloudy
 13° /1° 0 mm 4
30 Sept. Sunny
Sunny
 10° /-1° 0 mm 3
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?
Prepare for cooler days with highs just around 14° and colder nights, dipping below 4°.
How much rainfall should be expected in Banff during September?
Moderate rainfall is anticipated in Banff during September, with a total of 51.4 mm spread over approximately 7 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Banff during September?
The average wind speed in Banff during September is 11 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Banff

Explore the daily rainfall trends and prepare for Banffs September weather 💧

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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