Pretty much all year here. The worst we get here is rain. Doesn't get too cold here. But it does get over a 100F in the summer, usually July to September. I haven't done alot of riding outside in the rain' on those I've been using the trainer. In the summer I try to ride in the morning to avoid the heat.Next winter I plan on getting rain gear and a 2nd bike that I can ride in the rain.