When there are lots of rodents, it soon follows that there will be plenty of snakes. I saw a ton of rats, mice, and ground squirrel or chipmunk type rodents while out exploring the desert these last couple weeks and so there will be a surplus of snakes soon. Or at least that seems like a reasonable prognostication based on the available evidence.
The warm weather we've experienced these last few days is likely to entice snakes to come out of their holes. They say that rattlers accumulate a lot of venom during hibernation and so bites early in the spring can often deliver more toxic venom than might be the case later in the season. Keep an eye open for snakes!