The Queen Consort has cancelled a Royal visit to Suffolk today.
Camilla was expected to travel to Newmarket to celebrate the 40th anniversary of the British Racing School.
Later in the day, Her Royal Highness was going to visit the British Sporting Art Trust in the town.
The Royal engagement has been cancelled due bad weather.
A spokesman for the Royal Family said: "We are sorry to report that Her Majesty's engagements at Newmarket later today have had to be postponed due to weather impacting on transport arrangements.
"Her Majesty is of couse very sorry not to be able to attend and will hope to find another date to visit in due course."
The British Racing School was first opened by her husband King Charles III in November 1983.
The cancellation comes after Suffolk has been hit by snow flurries and freezing temperatures.
A yellow weather warning for snow and ice was in place for the county until 7am this morning.
Parts of the county woke up to snow on Wednesday and Tuesday.
Due to the adverse weather conditions, National Highways is urging road users to check ahead and plan for disruption to their journeys.
The cold snap is expected to continue to at least the weekend.
A spokeswoman for Met Office said: "Temperatures by day will be around 5-7C through to Saturday.
"There is likely to be a widespread, hard frost on Saturday morning.
"On Sunday we will start to see milder air moving in across the south of the UK, bringing daytime max temps of 10-12C for the end of the weekend and into the start of next week."
A Met Office Level 3 cold weather alert for most of the country has been extended until 9am on Monday, March 13.
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