Here's a snapshot of the morning skew-T sounding launched by NWS Jackson. Notice the copious amounts of moisture located from the surface to around 400mb. We've got lots of cloud cover across the region and intermittent rain showers thanks to all of this moisture.
Here in the GTR, we are right ahead of a fairly potent cold front. Notice all of the warm air across the southern halves of Mississippi and Alabama, and the noticeably cooler air back behind this front. 
A strong shortwave will be passing to our north tomorrow, but associated uplift from being in the right-rear quadrant of a 100kt jet streak (not shown) will keep rain chances in our forecast at least through about lunchtime tomorrow...but clouds will likely be slow to clear out.
Moisture at 700mb lingers through lunchtime, but it begins to decrease by tomorrow evening, so we should see the sky begin to clear out and we'll bottom out right around 50 degrees for Friday morning's low temperature!
Another strong shortwave will pass to our north on Saturday, but most of the rain shower activity is forecast by the models to be to the south of our area. But evidence continues to suggest a big-time cool down may be coming by the end of next week, so stay tuned!!!
IW
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