St Stephen Weather Forecast, Cornwall PL26 7

Today 19 Aug South West England

Cloudy in the southwest, with scattered, locally heavy showers lingering across Cornwall and western parts of Devon, perhaps with the occasional rumble of thunder. Elsewhere, mainly dry and increasingly sunny through the afternoon. Feeling warm in the sunshine Maximum Temperature 22C.

Tonight 19 Aug South West England

Scattered showers remain possible this evening, these locally heavy in Cornwall, but most places staying dry. Some hazy sunshine to end the day in more eastern counties. Generally dry overnight and staying fairly mild. Minimum Temperature 12C.

Wed 20 Aug South West England

Often cloudy with sunny intervals during the morning, with increasing amounts of sunshine developing through the afternoon. Feeling warm in the sunshine but a little fresher overall in the breeze. Maximum Temperature 23C.

Thu 21 Aug South West England

Remaining dry and settled through the rest of this week with a mixture of cloud and sunny periods. Feeling warm in the sunshine but nights will be cool at times.

Fri 22 Aug South West England

Remaining dry and settled through the rest of this week with a mixture of cloud and sunny periods. Feeling warm in the sunshine but nights will be cool at times.

Sat 23 Aug South West England

Remaining dry and settled through the rest of this week with a mixture of cloud and sunny periods. Feeling warm in the sunshine but nights will be cool at times.

Sun 24 Aug South West England

High pressure is likely to be the dominant feature at first, which would bring widely fine and dry weather for the Sunday of the Bank Holiday weekend. Whilst this is happening, low pressure in the Atlantic is expected to bring a change in weather to the UK, though the timing of any specific features is currently uncertain. From early to mid-week, high pressure is likely to become increasingly eroded from the west as areas of low pressure and frontal systems start to move in from the Atlantic, leading to more changeable conditions with spells of rain through the remainder of the week and the following weekend. Temperatures likely warm or very warm to start before quickly trending towards average.

Mon 25 Aug South West England

High pressure is likely to be the dominant feature at first, which would bring widely fine and dry weather for the Sunday of the Bank Holiday weekend. Whilst this is happening, low pressure in the Atlantic is expected to bring a change in weather to the UK, though the timing of any specific features is currently uncertain. From early to mid-week, high pressure is likely to become increasingly eroded from the west as areas of low pressure and frontal systems start to move in from the Atlantic, leading to more changeable conditions with spells of rain through the remainder of the week and the following weekend. Temperatures likely warm or very warm to start before quickly trending towards average.

St Stephen Weather Forecast

Today 19 Aug South West England

Tonight 19 Aug South West England

Wed 20 Aug South West England

Thu 21 Aug South West England

Fri 22 Aug South West England

Sat 23 Aug South West England

Sun 24 Aug South West England

Mon 25 Aug South West England

Temperature Forecast Met Office

Temperature Real-Time

Predannack (Cornwall) Radar

National Satellite

National Synoptic

St Stephen Temperature Statistics

August Temperature

Cardinham (23km)

Lowest 9 January, 2025

Average 2025

Highest 11 July, 2025

Lowest 3 July, 2025

Average July

Highest 11 July, 2025

Lowest 2 August, 2025

Average August

Highest 15 August, 2025

Climate (2020–Present)

Cardinham (23km)

Average Low 2020–2025

Average 2020–2025

Average High 2020–2025