Click on a day for an hourly weather forecast
The temperatures in Stamford in September are comfortable with low of 17°C and and high up to 24°C.
You can expect about 3 to 8 days of rain in Stamford 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 Stamford in September 2025.
If you’re planning to visit Stamford in the near future, we highly recommend that you review the 14 day weather forecast for Stamford before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 2° / -3° | 6 | 18 | 8 | 118 mm | Awful | Stamford in January |
| February | 3° / -3° | 7 | 13 | 9 | 134 mm | Awful | Stamford in February |
| March | 7° / 1° | 7 | 19 | 5 | 145 mm | Awful | Stamford in March |
| April | 13° / 6° | 8 | 21 | 1 | 147 mm | Bad | Stamford in April |
| May | 19° / 12° | 8 | 23 | 0 | 153 mm | Ok | Stamford in May |
| June | 24° / 17° | 8 | 22 | 0 | 169 mm | Good | Stamford in June |
| July | 28° / 21° | 9 | 22 | 0 | 213 mm | Good | Stamford in July |
| August | 28° / 21° | 7 | 24 | 0 | 193 mm | Good | Stamford in August |
| September | 24° / 17° | 6 | 24 | 0 | 142 mm | Perfect | Stamford in September |
| October | 18° / 12° | 6 | 25 | 0 | 161 mm | Good | Stamford in October |
| November | 11° / 5° | 6 | 23 | 1 | 104 mm | Ok | Stamford in November |
| December | 6° / 1° | 7 | 19 | 5 | 164 mm | Awful | Stamford in December |