Meanwhile, Met Office amber alerts, warnings of snowfalls and gale force winds, were issued.
The Met Office added that the conditions were forecast to improve over the weekend.
Reading University is working with the Met Office on improving MJO forecasting, he said.
The Met Office confirmed that it was the coldest month since records began 100 years ago.
The Met Office says snow should ease and turn to rain later in the day.
Unexpected snow across Oxfordshire has led to criticism of the Met Office by the county council.
Mr Rose said the council was likely to review its deal with the Met Office.
It involves the Met Office, the Environment Agency and the Centre for Ecology and Hydrology (CEH).
Last month was the UK's warmest April on record, the Met Office has said.
The Met Office said it was the warmest temperature recorded in the UK for five years.
BBC: 2011 is UK's second warmest year on record - Met Office
The Met Office said widespread ice was expected to persist, especially on untreated roads and pavements.
The Met Office has been advising the fire service about wind speed and direction.
Heavy snow is expected in Leicestershire, with an aamber warning issued by the Met Office.
Snow is expected to continue falling across the county over the weekend, the Met Office said.
The whole county is on yellow alert to "be aware", said the Met Office.
BBC: Cambridgeshire Police warn of ice patches on some roads
The Met Office is currently predicting heavy snow fall across the county on Sunday afternoon.
BBC: Cambridgeshire Police warn of ice patches on some roads
According to the Met Office there may be further snow and sleet ahead but "nothing heavy".
The Met Office says ice is a more common problem, particularly in border counties.
The Met Office has issued a yellow warning of ice for the region for Tuesday.
The Met Office said ice would become widespread on untreated surfaces overnight into Tuesday.
The Met Office said sleet and snow showers would become more widespread on Friday afternoon.
The Met Office said further heavy rain was expected into Monday across the region.
More heavy snow is forecast by the Met Office for Sunday and into Monday morning.
The Met Office has issued an amber warning for Lancashire, Greater Manchester and Merseyside.
The Highways Agency is working closely with the Met Office to monitor weather conditions.
The Met Office said there would be snow flurries, mainly in the Peak District.
This has also meant working closely with the British Met Office on sophisticated weather routing products.
The Met Office said there was also flooding in the Farnham area of Surrey.
The Met Office issued a rare red warning warning of snow and blizzards on Thursday.
The Met Office has put out a renewed warning of snow for eastern and south west Scotland.
BBC: Arran could be without mains electricity until next week
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