Tried to look at the 500mb to get a better answer.
As others in this thread have said the basic issue is we are stuck in a NW flow pattern. The maps (one from our rainy week a couple weeks ago and one from a day ago) show the difference
This one clearly shows a southeast ridge with a ULL in the plains which helps transport moisture up the east coast and wring it out. Clearly, this is the pattern we need to get some rain. Notice the wind barbs out of the southeast from the Gulf.
Meanwhile, this is the pattern we get. Beautiful weather but no moisture to be found in the upper air (unless you're hoping the Great Lakes save us). You can see the ULL over Maine with a ridge over the center of the country.
Now, the question is will things actually change? Using the EPS to look forward and its not great.
The forecast through at least next week is paltry with the upper air moisture transport as a ridge intensifies to our north. However, by mid month the pattern starts to breakdown and we see a more favorable setup return.
The GEFS suggests a similar reshuffling that helps us out as well. In the meantime, we're sorta cooked.