Officials called a precautionary inspection for 7.30am due to the threat of snow overnight, and clerk of the course Fiona Needham arrived to a wintry scene on Thursday morning.
With snow continuing to fall, Needham had no option but to call off proceedings at around 6.30am.
She said: “The snow came in the small hours, I think. We had a covering when I got here just after 5.30am and I was thinking ‘if this turned to sleet, it might go’. Unfortunately, as I went to walk the course, the snow just got heavier and heavier.
“It became obvious the snow wasn’t going anywhere. It’s disappointing, but it is what it is.”
Friday’s fixture at Huntingdon, which features the Chatteris Fen Juvenile Hurdle, is subject to a precautionary at 4pm on Thursday due to a risk of flooding.
The Environment Agency has issued a flood alert for Alconbury brook, which borders the racecourse.