Did you look at the ground around the shrubs? Is the ground disturbed - by an animal digging or the like? Is there any damage to the trunks (again, by an animal, or a weedeater)?

I went out and checked around the bases of them and nothing seems to be disturbed or out of place. There has been a lot of stray cats around the neighborhood this summer, but I don't see any evidence of them digging back there to do their business.

My backyard is also completely fenced in with four foot high chain link fence, and there is no gate. Entry is only possible from the garage or directly through the house.

I hand weed around all of the bushes and trees out back, so no trunk damage.

I just googles forsythia wilt, and there is at least one fungal disease that affects forsythia. So that's a possibility. I do recommend that you post your question in the Shrubs forum here on Gardenweb. I also recommend that you check the soil to see just how wet/damp/dry the plants are, just to be sure.

I am just about positive that the people on the Shrubs forum will point you in the right direction. Good luck.

I will cut and paste this to the shrub forum like you suggested, I wasn't sure where to post this at first. :)

I checked the soil, it doesn't seem too dry but I am wondering if I should water or not, they are forecasting rain for my area today and tomorrow and don't want to risk over watering if we get heavy rain.

Thanks again for all of your help!