Winters in Northampton are generally cool and occasionally cold, with temperatures rarely dropping below freezing for extended periods. The coldest months are January and December, with average temperatures ranging from around 3-6°C, although occasional colder snaps can bring temperatures as low as -7°C. As the spring season begins in March, temperatures gradually rise, with average highs reaching up to 22°C by May. Summer is warm but not hot, with July typically seeing the highest temperatures of around 29°C, while August and September are slightly cooler. Autumn brings a return to more moderate conditions, with October and November averaging around 7-12°C.