Altarnun Weather Forecast, Cornwall PL15 7

Today 21 Oct South West England

Sunny spells and scattered showers across the region today, with some heavy downpours at times. Winds will strengthen through the day, with a keen westerly wind. Maximum Temperature 17C.

Tonight 21 Oct South West England

Scattered showers, locally heavy at first, but these becoming mostly confined to western coasts overnight. Becoming largely dry elsewhere with clear spells and turning colder with perhaps the odd fog patch and pocket of grass frost in prone spots. Minimum Temperature 5C.

Wed 22 Oct South West England

Sunny spells through the morning with any fog patches clearing by late-morning. Isolated showers developing, though most places staying dry. Heavy rain arriving later in the day. Freshening easterly winds. Maximum Temperature 14C.

Thu 23 Oct South West England

Strengthening northwesterly winds on Thursday with gales or severe gales. Heavy rain at times, clearing later. Sunny spells and showers on Friday and Saturday and often windy. Feeling much colder.

Fri 24 Oct South West England

Strengthening northwesterly winds on Thursday with gales or severe gales. Heavy rain at times, clearing later. Sunny spells and showers on Friday and Saturday and often windy. Feeling much colder.

Sat 25 Oct South West England

Strengthening northwesterly winds on Thursday with gales or severe gales. Heavy rain at times, clearing later. Sunny spells and showers on Friday and Saturday and often windy. Feeling much colder.

Sun 26 Oct South West England

Many parts of south will be mainly dry at the start of this period, with high pressure tending to build from the Azores toward the UK. More unsettled in the north with lower pressure and weather systems moving in from the Atlantic to bring showers or longer spells of rain at times, the heaviest of which will be across hills in the northwest. Toward the end of October and into the start of November, conditions will likely turn more unsettled across the UK as whole, with low pressure systems bringing showers or longer spells of rain to most areas. Some drier and brighter interludes are likely between systems. After a cool start, temperatures will probably rise close to or slightly above normal later.

Mon 27 Oct South West England

Many parts of south will be mainly dry at the start of this period, with high pressure tending to build from the Azores toward the UK. More unsettled in the north with lower pressure and weather systems moving in from the Atlantic to bring showers or longer spells of rain at times, the heaviest of which will be across hills in the northwest. Toward the end of October and into the start of November, conditions will likely turn more unsettled across the UK as whole, with low pressure systems bringing showers or longer spells of rain to most areas. Some drier and brighter interludes are likely between systems. After a cool start, temperatures will probably rise close to or slightly above normal later.

Altarnun Weather Forecast

Today 21 Oct South West England

Tonight 21 Oct South West England

Wed 22 Oct South West England

Thu 23 Oct South West England

Fri 24 Oct South West England

Sat 25 Oct South West England

Sun 26 Oct South West England

Mon 27 Oct South West England

Temperature Forecast Met Office

Temperature Real-Time

Predannack (Cornwall) Radar

National Satellite

National Synoptic

Altarnun Temperature Statistics

October Temperature

Cardinham (15km)

Lowest 9 January, 2025

Average 2025

Highest 11 July, 2025

Lowest 22 September, 2025

Average September

Highest 6 September, 2025

Lowest 9 October, 2025

Average October

Highest 3 October, 2025

Climate (2020–Present)

Cardinham (15km)

Average Low 2020–2025

Average 2020–2025

Average High 2020–2025