Click on a day for an hourly weather forecast
The temperatures in Blackburn in September are usually low and can range between 10°C and 17°C.
You can expect about 3 to 8 days of rain in Blackburn 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 Blackburn in September 2025.
If you’re planning to visit Blackburn in the near future, we highly recommend that you review the 14 day weather forecast for Blackburn before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 6° / 2° | 10 | 16 | 5 | 94 mm | Awful | Blackburn in January |
| February | 7° / 2° | 9 | 15 | 4 | 93 mm | Awful | Blackburn in February |
| March | 10° / 3° | 8 | 21 | 2 | 84 mm | Awful | Blackburn in March |
| April | 13° / 4° | 6 | 24 | 1 | 62 mm | Ok | Blackburn in April |
| May | 15° / 7° | 8 | 23 | 0 | 93 mm | Ok | Blackburn in May |
| June | 18° / 10° | 8 | 22 | 0 | 112 mm | Ok | Blackburn in June |
| July | 20° / 12° | 8 | 23 | 0 | 130 mm | Ok | Blackburn in July |
| August | 19° / 12° | 8 | 23 | 0 | 123 mm | Ok | Blackburn in August |
| September | 17° / 10° | 6 | 24 | 0 | 88 mm | Good | Blackburn in September |
| October | 13° / 8° | 9 | 22 | 0 | 105 mm | Bad | Blackburn in October |
| November | 9° / 5° | 9 | 21 | 0 | 110 mm | Bad | Blackburn in November |
| December | 7° / 3° | 9 | 20 | 2 | 94 mm | Awful | Blackburn in December |