First moderate frost in De Bilt, later than usual

Moderate frost will occur for the first time this winter season later than usual. In De Bilt, the mercury showed -5.2 degrees in the night from Saturday to Sunday, reports weather agency Weeronline. On average, the first moderate frost occurs at the KNMI main station as early as December 22. The last time dates back to January 18 last year, when it reached -6.6 degrees in De Bilt.