UPDATE: Frost Advisory Upgraded To Freeze Warning In Much Of Vermont

A frost advisory that was in effect has been upgraded
to a freeze warning for much of Vermont away 
from the Champlain Valley. The valley continues
to be under a frost advisory. 

 The frost advisory that was in effect for the majority of Vermont has been upgraded to a freeze warning.

Expected lows early Thursday morning away from Lake Champlain will be a tad cooler than first thought, which means it'll get to or a bit below 32 degrees by dawn in much of the Green Mountain State.  

Such temperatures are not at all unusual for early October, but it's been so warm that a lot of people still have outdoor plants they want to protect.

So, it's back to digging out those old sheets to cover everything you want to save this evening. And hope for the best.

The big garden coverup should happen in the Champlain Valley as well. 

A frost advisory is still in effect there, which means temperatures should get perilously close to 32 degrees there. Remember, even if it's 34 or 35 degrees five feet off the ground where you'll read your thermometer, you can still get frost at your feet, where you lingering tomato and cucumber and flower plants are. 

There's still two places in Vermont without a freeze or frost alert. One of them is the Northeast Kingdom. The growing season is considered over up there. So there's no point in issuing a freeze warning there. 

Still, if you live up that way and were trying to hang on to outdoor plants, try covering them up. Better yet, bring 'em indoors if you can because most tender plants don't survive temperatures in the upper 20s.

The other spot escaping the frost advisory is Grand Isle County. It's surrounded by Lake Champlain, so the still warm waters of the lake should radiate a bit onto the county, keeping temperatures a bit above the level that you can get frost. 

It wasn't actually that cold this afternoon, so you'd think we'd escape an overnight frost. Temperatures were in the upper 50s to near 60 in most places. But that breeze we've had will diminish to calm. Skies will be clear all night. Daytime humidity was low. All those ingredients set us up for those temperatures to plummet overnight. 

Another thing to watch out for is locally dense fog early in the morning. Lord knows there's not much moisture in the ground to contribute to any fog. But the low rivers, ponds and lakes should be enough to create fog in the river valleys early tomorrow. 

You'll want to get a bit of an early start if you have to leave before, near or just after dawn tomorrow. You'll need to scrape the ice off your windshield, and you'll have to drive slowly through those dense fog patches. 

Tomorrow will be another nice, sunny, day, a little warmer than today. There's still a risk of scattered frost tomorrow night, but it won't be as widespread as what we'll get tonight. 

A big warm up is coming this weekend and early next week, so if your gardens survive tonight, they'll have a little October life in them yet.