The temperatures in County Durham 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 County Durham 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 County Durham in September 2025.
If you’re planning to visit County Durham in the near future, we highly recommend that you review the 14 day weather forecast for County Durham before you arrive.