Temperatures could fall close to zero in the Portsmouth area tonight with more cold weather expected ahead of the weekend.
The Met Office has forecast temperatures of 1C in the city overnight - but with the wind chill factor it could feel like -3C or -4C.
A weather warning for ice has been issued for parts of Wales, the north west and west Midlands.
The maximum temperature forecast for Portsmouth tomorrow is only 4C, although sunny spells are expected.
The colder conditions come as the Local Government Association’s (LGA) annual winter readiness survey shows that councils are well prepared for plummeting temperatures with a substantial stock of grit.
Some 92 per cent of councils have either more salt in stock for this year, or the same level as they did last year, and the LGA said gritters would be out treating thousands of miles of roads whenever overnight temperatures drop below zero in the coming days.
Councillor Martin Tett, the LGA’s transport spokesman, said: ‘Winter is fast approaching and temperatures are already starting to drop - but councils are prepared.
‘Planning for winter remains a key priority for councils, despite ongoing funding pressures and competing demands on their limited resources. Across the country, local authorities have taken the steps necessary to protect their residents from floods, ice, and wintry conditions.’