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Canada weather

Weather in Penticton for September 2025

Your guide to Penticton weather in September - trends and predictions

    Temperatures

  • So far, September 2025 in Penticton is slightly warmer than the historical average by 1.3 °C.

  • The forecast for the next days in Penticton predicts a temperature of 23.5 °C, which is cooler than the historical average.

  • In general, the average temperature in Penticton at the beginning of September is 29.9 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 16.6 °C by the end of September.

    • Rain 🌧️

  • Penticton experiences moderate rainfall in September, with an average of 7 rainy days and a total precipitation of 18.6 mm.

    • More

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

Average dry days
23
Dry days
Average rainy days
7
Rainy days
Average snowy days
0
Snow days
Average temperatures
22°/4°
Temperatures
Average wind speed
11 km/h
Avg max wind
Average humidity
55 %
Avg humidity

Penticton Weather September

Move between months or click on a day
August
October
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Overcast
32°
2
Partly cloudy
32°
3
Sunny
29°
4
Sunny
29°
5
Sunny
29°
6
Sunny
30°
7
Sunny
28°
8
Partly cloudy
29°
9
Sunny
25°
10
Sunny
26°
11
Overcast
24°
12
Overcast
25°
13
Overcast
26°
14
Overcast
23°
15
Partly cloudy
25°
16
Sunny
27°
17
Sunny
30°
18
Sunny
29°
19
Sunny
29°
20
Cloudy
30°
21
Patchy rain possible
23°
22
Patchy rain possible
19°
23
Sunny
21°
24
Sunny
25°
25
Moderate rain
15°
26
Patchy rain possible
17°
27
Patchy rain possible
16°
28
Moderate or heavy rain with thunder
15°
29
Patchy rain possible
13°
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
 32° /8° 0 mm 8
2 Sept. Partly cloudy
Partly cloudy
 32° /11° 1 mm 8
3 Sept. Sunny
Sunny
 29° /9° 0 mm 7
4 Sept. Sunny
Sunny
 29° /7° 0 mm 7
5 Sept. Sunny
Sunny
 29° /7° 0 mm 7
6 Sept. Sunny
Sunny
 30° /7° 0 mm 7
7 Sept. Sunny
Sunny
 28° /8° 2.3 mm 6
8 Sept. Partly cloudy
Partly cloudy
 29° /10° 0 mm 7
9 Sept. Sunny
Sunny
 25° /11° 1.4 mm 6
10 Sept. Sunny
Sunny
 26° /7° 0 mm 6
11 Sept. Overcast
Overcast
 24° /6° 1.6 mm 5
12 Sept. Overcast
Overcast
 25° /8° 0 mm 6
13 Sept. Overcast
Overcast
 26° /3° 0 mm 6
14 Sept. Overcast
Overcast
 23° /14° 0 mm 0.7
15 Sept. Partly cloudy
Partly cloudy
 25° /8° 0 mm 1.2
16 Sept. Sunny
Sunny
 27° /8° 0 mm 1.2
17 Sept. Sunny
Sunny
 30° /11° 0 mm 1.2
18 Sept. Sunny
Sunny
 29° /8° 0 mm 0
19 Sept. Sunny
Sunny
 29° /7° 0 mm 5
20 Sept. Cloudy
Cloudy
 30° /10° 0 mm 4
21 Sept. Patchy rain possible
Patchy rain possible
 23° /5° 0.1 mm 3
22 Sept. Patchy rain possible
Patchy rain possible
 19° /2° 2 mm 3
23 Sept. Sunny
Sunny
 21° /1° 0 mm 4
24 Sept. Sunny
Sunny
 25° /5° 0 mm 4
25 Sept. Moderate rain
Moderate rain
 15° /7° 7.7 mm 3
26 Sept. Patchy rain possible
Patchy rain possible
 17° /1° 0.1 mm 2
27 Sept. Patchy rain possible
Patchy rain possible
 16° /-1° 0.2 mm 2
28 Sept. Moderate or heavy rain with thunder
Moderate or heavy rain with thunder
 15° /-1° 5.8 mm 4
29 Sept. Patchy rain possible
Patchy rain possible
 13° /0° 0.1 mm 4
30 Sept. Patchy rain possible
Patchy rain possible
 15° /-5° 0 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?
During September, expect a variety of temperatures with highs around 22° and lows near 4°, suitable for diverse activities and preferences.
How much rainfall should be expected in Penticton during September?
Expect minimal rainfall in Penticton during September, with a total of 18.6 mm over approximately 7 days. This minimal precipitation is unlikely to significantly impact plans.
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 💧

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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