A council has warned that temperatures could drop to below -7.5ºC tonight.
Buckinghamshire Council Council issued advice this afternoon and said teams will be salting priority routes from 7pm. It has warned that salt will start to become ineffective in low temperatures.
The council said when salt is spread on the road it works by lowering the freezing point of any moisture that comes into contact with the road to -8ºC. When road surface temperatures reach -8ºC, salt will become ineffective and ice will start to form on the roads.
In Maidenhead, Slough, Windsor and Twyford temperatures will be below freezing. There is possibility of light snow showers in these areas tomorrow evening.
The Met Office has said that although many places have had another fine and cold day today, rain is expected to sweep east and north across much of the UK later tomorrow and on Friday. The rain is expected to be accompanied by strong to gale force east or southeast winds, with the potential for severe gales across exposed coasts and hills.
Gusts of 45 mph are expected quite widely with gusts up to 65 mph possible on exposed coasts and hills in the north and east.See our weather pages for Berkshire weather
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The Met Office has issued a yellow alert for Windsor and Maidenhead, Slough and Wokingham, warning that rain moving eastwards across the south of the country may turn to snow in some places.