(Roger Federer's Facebook)
Players have been greeted with frigid temperatures and in some instances, hail, in Paris. Roger Federer and his coach, Paul Annacone, posted pictures of hail on the courts of Roland Garros, with Federer writing, "Had to stop practice for a few minutes....what the hail is going on here......"
Venus Williams also had to bundle up for the cold temperatures, which have ranged from the low 40s at night to the 50s during the day. "It's like winter here!" she wrote.
The rain has been pelting down as well, though Maria Sharapova says it didn't interrupt her practice.
Rain has wreaked havoc on tennis all over Europe this week. The Brussels Open may have to finish indoors, while tournaments in the French cities of Strasbourg and Nice have also been hampered by rain. So what does this mean for the French Open, which starts Sunday? Get ready for cool temperatures and rain delays with a lot of starts and stops. Here's the weather forecast for the first week, courtesy of Weather.com: