The Set-Up You Need For Successful Grilling In The Rain - Chowhound

Make sure your grill is hotter than you'd normally set it. Some rainwater is likely to get into the grill through its air vents, and it's probably colder outside with the wind and lack of sun — these can both lower the temperature you'd cook at if it were sunny, and you don't want to undercook your meat. If you're using a charcoal grill, adding extra briquettes will heat it up enough to make up for the elements…