Friday, September 19, 2025

Fire And Ice: Risk Of Wildfires Today, Frosts And Freezes Tonight, Tomorrow Night

Very low water along the Brewster River in 
Jeffersonville, Vermont this week. High pressure
today and tomorrow is raising the risk of frost,
continuing the drought and keeping
a high forest fire danger going. 
 As expected, a cold front blew through last night, and even as the sun was breaking through the clouds this morning, temperatures were still falling. 

The cold air lagged, and it was still unexpectedly kind of mild this morning. It was still 70 degrees in Burlington at midnight and near 60 at dawn. 

But, as we go through the day, temperatures will struggle to get into the 60s this afternoon. 

It actually rained in a few spots overnight, too, though the word "rain" is probably a bit strong here.  Sprinkles came down in Burlington. 

Here in St. Albans, we were a particular "wet" spot with a whopping 0.01 inches of rain. 

Those paltry amounts of course make no difference with our deep drought. As the day goes on, skies will clear, winds will stay breezy from the north, and humidity will crash to low levels once again.  

That's a recipe for increased fire danger. Since everything out there is parched, any spark could trigger a wildfire. "If any fires were to start, the weather and fuel conditions could cause fires to quickly get out of control and be difficult to contain," the National Weather Service announced in a special weather statement that's in effect today. 

The Vermont Department of Forests, Parks and Recreation has rated the fire danger as high for the past week or so. For today, they've upgraded the risk to very high. 

FROST/FREEZE

The cool breezes will calm down tonight. Skies will stay clear, and the low humidity will allow temperatures to drop. We're in for the most widespread frosts of the season so far. 

A freeze warning is in effect overnight and early Saturday morning for Essex County, Vermont, in the far corner of the Northeast Kingdom. The freeze warning is also up for the Adirondacks, far northern New Hampshire and northwest Maine. In those places, the temperature will fall to between 25 and 30 degrees, so that will definitively end the growing season in those places.

Here in Vermont, a frost advisory is up for everybody in the northern half of Vermont except the Champlain Valley.  Temperatures will fall to between 30 to 35 degrees in these areas by dawn Saturday.  You'll want to bring in vulnerable plants, or cover them up with sheets and such to protect them.  

Or, if you have a vegetable garden, today would be an excellent day for what I call your Emergency Frost Harvest, in which you can take in anything that is vulnerable. Grab those tomatoes, cucumbers and peppers while you can! 

There's no frost advisory in southern Vermont yet, but I expect quite a few patches of frost down there, too.  

Keep those sheets handy, because you'll need them Saturday night and early Sunday. Saturday will be a bright, cool, crisp, autumnal day. The fire danger will still be around, as humidity levels will be even lower than today. But Saturday's winds will be light, so that will minimize the spread of any wildfires. 

If anything, Saturday night and the hours around dawn Sunday might be even colder than tonight. There might even be some frost in the Champlain Valley well away from the lake.   It depends on whether any late night light breezes kick in or not. 

After Sunday morning, temperatures will turn warmer again, so the frost threat will go away for now. If your plants survive the frost this weekend, they'll last into October. The overall weather pattern will lean warm through then. 

Of course, your plants might not survive the ongoing drought. It's not really going to get any better.  

WEAK RAIN PROSPECTS

The good news is looks like it's finally going to rain next week. We think, anyway. The bad news is the amount of rain will be completely inadequate to help in any meaningful way with the drought.  

But, at least some rain is in the forecast. The predictions are iffy, but early guesses give us a tenth to a third of an inch of precipitation next Tuesday through Thursday. That's far short of what we need, but we'll take anything.  At least a lame rain would minimize the fire danger temporarily. 

We'll have more details on next week's rain chances as we get closer to the potential weather system. 

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