Is it possible the lights not working are coming off a different circuit breaker of your panel? Maybe something tripped? If an extension cord has shorted, every time you reset your breaker, it's just going to trip it again.

I have had the experience where 1 bad extension cord in a string of them can shut the whole thing down. With all the rain, it's possible something shorted out. I take a light that I've verified works, then starting at the root house plug, start unplugging and plug in the light at every junction until I find the culprit.

BUT, IF ITS STILL WET AND RAINING -DONT DO THIS!!!!!!!!!!

Handling live electrical cords with wet hands on wet ground is a very bad idea.