Runcorn Weather Forecast
- 10
- 23
Mostly clear
- 10
- 24
Partly cloudy
- 9
- 25
Mostly sunny
- 9
- 27
Sunny
- 11
- 25
Partly cloudy
- 9
- 22
Partly cloudy
- 9
- 23
Partly cloudy
Today 12 Sep Southeast Coast
Partly cloudy. Medium chance of showers, becoming less likely in the late afternoon and evening. The chance of a thunderstorm inland in the afternoon and evening. Winds east to southeasterly 15 to 20 km/h becoming light in the evening.
Runcorn Temperature Statistics View More
September Temperature
Archerfield Airport (7km)
Lowest 2 September, 2026
9.4 °CAverage September
19 °CHighest 6 September, 2026
35.4 °C
Climate (2021–2026)
Archerfield Airport (7km)
Average Low 2021–2026
15.4 °CAverage 2021–2026
20.5 °CAverage High 2021–2026
27 °C