Click on a day for an hourly weather forecast
The temperatures in Kelowna in September are quite cold with temperatures between 7°C and 18°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Kelowna 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.
Our weather forecast can give you a great sense of what weather to expect in Kelowna in September 2025.
If you’re planning to visit Kelowna in the near future, we highly recommend that you review the 14 day weather forecast for Kelowna before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -3° / -10° | 9 | 7 | 15 | 51 mm | Awful | Kelowna in January |
| February | -3° / -10° | 10 | 6 | 15 | 47 mm | Awful | Kelowna in February |
| March | 2° / -5° | 10 | 12 | 10 | 61 mm | Awful | Kelowna in March |
| April | 7° / -1° | 6 | 21 | 4 | 68 mm | Bad | Kelowna in April |
| May | 13° / 4° | 7 | 24 | 0 | 87 mm | Bad | Kelowna in May |
| June | 17° / 6° | 7 | 23 | 0 | 88 mm | Ok | Kelowna in June |
| July | 23° / 10° | 3 | 28 | 0 | 44 mm | Perfect | Kelowna in July |
| August | 23° / 11° | 3 | 28 | 0 | 29 mm | Perfect | Kelowna in August |
| September | 18° / 7° | 3 | 27 | 0 | 43 mm | Good | Kelowna in September |
| October | 9° / 1° | 5 | 25 | 1 | 55 mm | Ok | Kelowna in October |
| November | 2° / -5° | 7 | 14 | 9 | 56 mm | Awful | Kelowna in November |
| December | -4° / -10° | 8 | 6 | 17 | 42 mm | Awful | Kelowna in December |