Click on a day for an hourly weather forecast
The temperatures in Bolton in September are quite cold with temperatures between 9°C and 15°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Bolton 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 Bolton in September 2025.
If you’re planning to visit Bolton in the near future, we highly recommend that you review the 14 day weather forecast for Bolton before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 5° / 1° | 8 | 16 | 8 | 51 mm | Awful | Bolton in January |
| February | 6° / 2° | 5 | 15 | 8 | 57 mm | Awful | Bolton in February |
| March | 8° / 2° | 6 | 22 | 3 | 50 mm | Bad | Bolton in March |
| April | 10° / 4° | 5 | 23 | 2 | 39 mm | Bad | Bolton in April |
| May | 13° / 6° | 6 | 25 | 0 | 57 mm | Ok | Bolton in May |
| June | 16° / 9° | 6 | 24 | 0 | 75 mm | Good | Bolton in June |
| July | 18° / 11° | 6 | 25 | 0 | 85 mm | Good | Bolton in July |
| August | 17° / 11° | 7 | 24 | 0 | 88 mm | Ok | Bolton in August |
| September | 15° / 9° | 4 | 26 | 0 | 51 mm | Good | Bolton in September |
| October | 12° / 7° | 6 | 24 | 0 | 66 mm | Ok | Bolton in October |
| November | 8° / 4° | 7 | 21 | 1 | 69 mm | Bad | Bolton in November |
| December | 6° / 2° | 7 | 20 | 4 | 53 mm | Awful | Bolton in December |