Porton Down Weather Forecast
- 8
- 12
Heavy rain
- 7
- 11
Light rain
- 11
- 14
Partly cloudy
- 7
- 12
Heavy rain
- 9
- 13
Light rain
- 9
- 14
Partly cloudy
- 11
- 15
Cloudy
Today 20 Oct South West England
A fine sunny day in Cornwall, this becoming more widespread as morning rain and cloud in the east gradually pushes away to the north. Blustery showers push into the far southwest by evening. Maximum temperature 15 °C.
Tonight 20 Oct South West England
Showers give way to more organised bands of rain, these pushing northwestwards through the night. Winds strengthening to strong westerlies. Minimum temperature 6 °C.
Porton Down Temperature Statistics
October Temperature
Boscombe Down (4 km)
Lowest 17 October, 2026
3 °CAverage October
12.8 °CHighest 4 October, 2026
21.9 °C
Climate (2021–2026)
Boscombe Down (4 km)
Average Low 2021–2026
7.5 °CAverage 2021–2026
11.4 °CAverage High 2021–2026
15.4 °C