Don't have any figures for Durham, but 1961-90 averages for Sheffield 131m are snow falling 24.4, lying 20.4. Durham site at 102m asl is obviously colder than Sheffield even though its lower. Durham precipitation is nearly 200mm lower than Sheffield, the difference is most marked in the winter months. Perhaps if Sheffield is snowier than Durham City its probably due the fact Durham City is much more sheltered from W and NW airflow due to the high ground to West being much higher and larger than near Sheffield. Often Sheffield picks up snowfall from NW flows even though it is to the East of Pennines when Durham City will remain dry. Mark Teesdale,Co Durham