For the second night in a row we are under a frost warning here in eastern Newfoundland. According to records, our St. John's average daily minimum on this date is 10.5C. Last night's low of 3.5C is one of the lowest temperatures for any day in July since records began to be kept in 1942. The CBC reports that frost warnings were announced last night in Prince Edward Island too.
Update: The frost warning above apparently went down the memory hole.