MIAMI (Reuters) - Orange groves in Florida have escaped damage from frigid weather across parts of the state so far, but farmers are bracing for more potentially lethal blasts of freezing air, the state's main growers group said on Sunday.

Andrew Meadows, a spokesman for Florida Citrus Mutual, said there had been no reports that temperatures had fallen far enough, for long enough, to cause any damage to the citrus crop on Saturday night or Sunday morning.

"We did not get there last night and we don't expect to get there tonight," Meadows said.

He said harsh winter weather was expected across the Citrus Belt for the next seven to 10 days, however, and that it was too soon to make any firm predictions about damaging freezes.

"We're going to get close and will certainly be watching that thermometer," Meadows said.

Typically, citrus crops are damaged if temperatures fall to 28 degrees Fahrenheit (minus 2 degrees Celsius) or below for four hours or longer.

Citrus is a $9 billion industry in the Sunshine State even as it continues to lose trees to canker and citrus greening.

(Reporting by Tom Brown; Editing by Maureen Bavdek)