If so have vacant bed, why not. Start them. The sooner , the better. IMO

Probably a little early yet, but if they don't like the soil temp now, the seeds will germinate when cooler weather arrives. When I lived in San Diego, I planted crimson clover in October, along with garlic & other winter crops (in separate locations). Broadcast some oats & peas into the clover as well. The peas didn't have time to mature before it was all turned under, but I got to harvest a lot of pea shoots.

Thanks for the responses.... harvesting pea shoots, that's interesting! I think I'll post a new cover crop question inspired by that comment.