Runcorn's climate is mild and temperate, with temperatures gradually warming up as the year progresses. In winter, January and February are quite chilly, with average temperatures ranging from 4-6°C, while December is slightly warmer with averages around 7°C. As spring arrives in March, temperatures rise to an average of 10°C, and by May they have reached a comfortable 12°C. Summer months bring warm days, with July being the warmest month on average at 19°C, but temperatures can soar up to 32°C. Autumn brings a slight cooling, with October averaging around 14°C and November returning to averages similar to those in January.