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Canada weather

Weather in Penticton for September 2026

Your guide to Penticton weather in September - trends and predictions

    Temperatures

  • Until now, September 2026 in Penticton is cooler than usual, with temperatures averaging 24.2 °C, this is 3.8 °C below the typical seasonal average.

  • The forecast for the next days in Penticton predicts a temperature of 17.6 °C, which is cooler than the historical average.

  • In general, the average temperature in Penticton at the beginning of September is 28.3 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 15.9 °C by the end of September.

    • Rain 🌧️

  • The climate of Penticton in September is notably wet, with an average of 11 rainy days, and a total of 25.4 mm of precipitation.

    • More

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

Average dry days
19
Dry days
Average rainy days
11
Rainy days
Average snowy days
0
Snow days
Average temperatures
23°/6°
Temperatures
Average wind speed
11 km/h
Avg max wind
Average humidity
53 %
Avg humidity

Penticton Weather September

Move between months or click on a day
August
October
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Overcast
31°
2
Partly cloudy
31°
3
Sunny
26°
4
Sunny
27°
5
Sunny
27°
6
Sunny
29°
7
Sunny
27°
8
Sunny
29°
9
Sunny
25°
10
Sunny
25°
11
Overcast
22°
12
Sunny
17°
13
Sunny
18°
14
Sunny
16°
15
Overcast
13°
16
Sunny
20°
17
Sunny
22°
18
Sunny
25°
19
Partly cloudy
26°
20
Sunny
24°
21
Overcast
11°
22
Sunny
12°
23
Sunny
9°
24
Sunny
11°
25
Light rain
19°
26
Light freezing rain
16°
27
Light freezing rain
18°
28
Overcast
18°
29
Patchy rain possible
14°
30
Patchy rain possible
15°

Temperatures trend during September in Penticton

See the weather trend as well as the moving average line

September weather in Penticton day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Overcast
Overcast
 31° /9° 0 mm 7
2 Sept. Partly cloudy
Partly cloudy
 31° /11° 2.8 mm 6
3 Sept. Sunny
Sunny
 26° /8° 52 mm 6
4 Sept. Sunny
Sunny
 27° /7° 0 mm 6
5 Sept. Sunny
Sunny
 27° /7° 0.3 mm 6
6 Sept. Sunny
Sunny
 29° /8° 0 mm 7
7 Sept. Sunny
Sunny
 27° /9° 3.2 mm 5
8 Sept. Sunny
Sunny
 29° /10° 0 mm 7
9 Sept. Sunny
Sunny
 25° /11° 1.1 mm 5
10 Sept. Sunny
Sunny
 25° /8° 0.1 mm 6
11 Sept. Overcast
Overcast
 22° /10° 0 mm 4.2
12 Sept. Sunny
Sunny
 17° /7° 0 mm 4.4
13 Sept. Sunny
Sunny
 18° /7° 0 mm 4.8
14 Sept. Sunny
Sunny
 16° /6° 0.1 mm 4.6
15 Sept. Overcast
Overcast
 13° /8° 1.1 mm 3
16 Sept. Sunny
Sunny
 20° /7° 0 mm 6
17 Sept. Sunny
Sunny
 22° /10° 0 mm 6
18 Sept. Sunny
Sunny
 25° /12° 0 mm 6
19 Sept. Partly cloudy
Partly cloudy
 26° /14° 0 mm 7
20 Sept. Sunny
Sunny
 24° /11° 0 mm 6
21 Sept. Overcast
Overcast
 11° /5° 0.3 mm 4
22 Sept. Sunny
Sunny
 12° /2° 0 mm 3
23 Sept. Sunny
Sunny
 9° /1° 1.8 mm 3
24 Sept. Sunny
Sunny
 11° /1° 0.6 mm 4
25 Sept. Light rain
Light rain
 19° /5° 2.1 mm 4
26 Sept. Light freezing rain
Light freezing rain
 16° /4° 1 mm 4
27 Sept. Light freezing rain
Light freezing rain
 18° /6° 1.4 mm 4
28 Sept. Overcast
Overcast
 18° /1° 3.9 mm 4
29 Sept. Patchy rain possible
Patchy rain possible
 14° /3° 2.6 mm 4
30 Sept. Patchy rain possible
Patchy rain possible
 15° /0° 3.6 mm 4
Next
Important Notice
Our weather forecast for Penticton 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 Penticton forecast closer to your planned date for the most up-to-date weather information.
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Penticton in September - FAQ

What are the expected maximum and minimum temperatures in Penticton during September?
Enjoy moderate daytime temperatures of up to 23° and cooler nights around 6°. Ideal for a range of outdoor activities, from hiking to city tours.

How much rainfall should be expected in Penticton during September?
In September, Penticton can expect light to moderate rainfall, totaling 25.4 mm across approximately 11 days. Occasional showers are possible, and planning ahead for them could be helpful.

What are the typical wind conditions in Penticton during September?
The average wind speed in Penticton during September is 11 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Penticton

Explore the daily rainfall trends and prepare for Pentictons September weather 💧
Typically, Penticton has 11 rainy days in September with a total of 25.4 mm of rainfall.

UV exposure in Penticton during September

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

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Location coordinates Where is Penticton?

Get accurate weather forecasts for Penticton, located at latitude 49.481 and longitude -119.586. Stay updated with localized weather information tailored for Penticton.

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