Winters in Newton Aycliffe are typically cold and variable, with temperatures often below freezing, but occasionally rising into double figures. Spring brings a gradual warming trend, with March being the first month to consistently average above freezing. Summer is warm to hot, with July often seeing temperatures reach 30°C, while autumn is generally mild, though November can be cool once more. April and May are transitional months, still experiencing some chilly days but also enjoying warmer spells.