I'm definitely no zone 8 expert, but in spite of the spots the leaves look pretty good. As long as it doesn't get worse and start killing the plant you might be ok. You might have to begin spraying with your insecticide and/or fungicide of choice.

This post was edited by edweather on Sat, May 4, 13 at 0:36

Hi,
if you know of a good nursery in your area, take in some sample leaves from all your plants and see what they say. You can also look up your local USDA county extension office and take them there. There are some mosaic viruses that can affect multiple types of plants. Worst case scenario, if you have to start over with zucchini, you can start from seed and have blossoms again in no time. It's still early for everything else too. It'd be important to id the cause of the problem though, so you know if you can can reuse your soil.
Hopefully it's just something minor related to the rain.

Here is a link that might be useful: County Extension Office lookup

I'm in the Atlanta area. I have the same spots on my cukes. Can't say my leaves look as healthy. I'd given up on them. I'll try my local extension office tomorrow. I find them to be very helpful.