It rained and my jetta wont start

Could be bad spark plug wires. Moisture often affects them.

the stupid thing was i tried to jump start it, and now it's parked in the parking lot of a park next to my place, checked this morning and for some weird reason, battery's dead. took a bus to the store, bought a battery booster, charging that now. hope it works.

u know what? i just changed the distri cap, wires and plugs just last oct/nov! and i havent even driven more than 10000km

someth> Could be bad spark plug wires. Moisture often affects them.

All your cranking may have drained the Batt. Check how tight your terminals are attched too - I had a "dead" batt on a jeep once that only needed cleaning of the post and retightening. As for the moisture, spray some moisture repellant spray or even WD-40 all of the dist-cap.