Remarkable Vermont Temperature Crash On Friday, But It Won't Last

Some interesting patterns in an otherwise dull gray
overcast in St. Albans, Vermont late Friday afternoon,
Friday was much cooler than the most of the rest of
our sticky, steamy July was. 

Well, Friday was a change, that's for sure.  

Unlike most of Vermont's July, which featured a lot of warmth and humidity, it got downright chilly.  Especially under the rain clouds in southern Vermont. Not that I'm complaining. 

Looking at the receipts, the change in the weather was striking. Especially for summer, when there's usually not a lot of variability in temperatures. 

Springfield, Vermont really has had a southern flavored summer so far, enduring 15 days so far this year of 90 degrees or more,. 

On Thursday. it was 90 degrees at 4 p.m. in Springfield.  Exactly 24 hours hours later, at 4 p.m. Friday, it was 62 degrees. That 28-degree drop must have been a shock to the system.

Over in Bennington, it was only 61 degrees at 4 p.m. In Vermont this time of year, it should be at least 80 degrees at that hour. 

As expected, the heavier rain Friday was confined to far southern Vermont. Bennington picked up 1.19 inches, and Woodford State Park had an inch.

Once you got about 20 miles north of Route 9, precipitation was much lighter. Townsend and Springfield only had a quarter inch of rain. Rutland had only 0.02 inches. North of that, just sprinkles. 

Away from Vermont, also as expected, there was flash flooding in the Mid-Atlantic states. Like there's been a zillion times this summer, it seems. 

Back here in the Green Mountain state, skies cleared even faster than expected Friday evening, so temperatures were able to get pretty cool by this morning, especially along and north of Route 4, where it was clear the longest. Most of northern and central Vermont was down in the 40s. 

The perennial cold spot Saranac Lake, New York was down to 37 degrees. Burlington was at 51 degrees at 6 a.m. today, the coldest temperature there since June 3.

COOL AT FIRST  

The peak of summer is over, and temperatures Friday and this morning seem to prove it. But summer is not done with us, at all.  We have a lot of warm air to get to. Eventually. 

The dreariness we saw Friday is gone. It's back to bright sunshine, which will boost afternoon readings back up into the 70s.  That's still a little cool for this time of year, but not be that much. A few puffy clouds will grace our  blue skies. today, so it's be pretty out there.  We'll only have a  faint hint of that persistent wildfire smoke from Canada.

Dawn Saturday will be just as chilly as this morning. Clear skies, light winds and dry air will ensure that. But another sunny day Saturday will bring temperatures well into the 70s to near 80. The wildfire smoke might be a little more noticeable than today, but not so thick as to be a major health hazard. 

Saturday night will be another cool, comfortable night.

THE WARMUP

This cool spell will be short-lived, much shorter than forecasts from about a week ago indicated. This is one persistent summer.

By Sunday, we'll be back in the 80s as that cool, big high pressure moves off to our east a little. Every day next week will be in the 80s for most of us. There could even be a 90 degree reading in hot spots like Springfield. 

Usually, in the summer, once big high pressure passes to the east, both temperatures and humidity surges

This time the temperature will definitely go up, but the humidity will stay pretty reasonable. Dew points near 50 today and tomorrow will rise to near 60 or starting Sunday and stay that way going through at least Wednesday. That's vaguely humid if you're sensitive to it, but it's nowhere near oppressive and awful.

The humidity won't go up much because the strong high pressure that's causing this long period of sunshine and dry weather will stay near Quebec and New England. It won't have a good connection to the tropical Atlantic or Gulf of Mexico. 

Forest Fires

The long stretch of mostly sunny, dry weather, with minimal chances of showers, means we'll have to watch for forest fire hazards. We already had a forest fire in Fair Haven last week that covered at least 12 acres. The was a small brush fire in Alburgh a couple days ago. 

I have a feeling that some errant camp fires or backyard burns or flicked cigarettes could touch off a few more fires in and around Vermont this week. It won't be anything cataclysmic like what's going on in Canada, but we still don't need to add to the problem. 

There are signs we could see a period of hot, and notably more humid air toward the end of next week. That's a long way off and things could still change. 

But it'll be awhile before we see the cool, brisk and crisp breezes of autumn. 

It won't be  until later next week that the humidity will be able to surge in.