European wheat futures rose to their highest in nearly a year as growing concerns about the impact on crops of a heatwave in France added to support from a weather rally on the U.S. market. December milling wheat, the most active contract on the Paris-based Euronext exchange, was up 2.75 euros or 1.5 percent at 180.00 euros ($200.95) a tonne. Front-month September also touched its highest since last July, adding as much as 4 euros to 177.50 euros.