2017 was the 10th warmest year on record at Durham since 1850, only marginally cooler than 1990 which had a memorably warm summer. The mean maximum air temperature was the 20th warmest on record (since 1900) and the mean minimum air temperature was the 3rd warmest on record, beaten only by 2004 and 2014. The overall warmth of 2017 was therefore more due to warm nights than warm days. Even so, there were 82 ground frosts, a higher number than in the previous three years, although still the 11th lowest total on record (since 1954). Rainfall was just a little above average but not greatly so, only the 70th wettest in 168 years. Total sunshine hours were again below average, the 29th lowest annual total since 1882.
Professor Tim Burt
Department of Geography