Thanks and you're welcome, Gymgirl! Not sure the Almanac's predictions are all that reliable, however; we got a pretty good frost here in DFW this morning, but I'm not sure if that qualifies as an official freeze. Regardless, we're not supposed to get quite that low until around 11.15, so it was early by anyone's standards.
Even if we dip into the 30s here, it's usually just overnight, and the next day gives us enough bright sunshine to warm up to the mid-40s or so. Perfect temps for my brassicas!
And, if it does threaten to be in the low 30s to high 20s for more than a couple nights in a row, I just throw sheets over my hoop. The plants stay nice and toasty overnight, and enjoy the next sunshiney day! Last year, we had 4 nights in a row of temps in the high 20s. When it goes that low, I water down everything before throwing the sheets over the hoops. Haven't lost anything to frost yet (except maybe one mustard green plant got mushy, as I recall...)