Humidity begins significant drop Thursday

finger lakes weather forecast thursday august 9 2018 morning fog evening showers lower humidity
After seemingly relentless humidity, much more comfortable air is on the way for the Finger Lakes. [Photo by Dale Swarts]

Improving Weather

Weather conditions across the Finger Lakes will be much nicer over the next few days thanks to an area of high pressure from Canada.

Before this high arrives though, the low pressure system that brought yesterday’s rain and thunder is still our primary influencer today.

This low is now situated well north into Canada with its cold front extending south across New England. Currently over the Finger Lakes is a small wave of high pressure, which will bring a pleasant day to the region today.

There is a secondary wave of lower pressure over the Upper Great Lakes which will swing through overnight tonight. This will then be followed by an area of high pressure which will build south from Canada.

So, for today, watch for areas of thick morning fog, especially in valley locations that saw heavy rain yesterday. The fog will gradually burn off this morning, leaving a mix of sun and clouds. Humidity levels will be lower than in recent days, but dewpoints will still be in the 60s.

Look for an afternoon high temperature within a couple of degrees on either side of 80 degrees.

This evening, a couple showers may sneak in, especially for areas close to the Great Lakes. By Friday morning, any showers should be south of the region and skies will again turn partly cloudy.

Humidity levels will crash during the day on Friday, with dewpoints backing into the mid or even low 50s with high temperatures in the upper 70s. After the muggy, oppressive humidity, it will feel wonderful on Friday.

Weekend Uncertainties

While the Canadian high pressure builds south and reduces our humidity, a stalled frontal boundary will remain draped across the Mid-Atlantic.

This weekend, these two contrasting weather systems will start to butt up against each other, likely leading to a sharp cut off between nice weather and a wet weekend.

At this time, the chances for rain look to be about 50-50 this weekend. Areas to the south will have a much higher chance for rain compared to areas to the north, and Sunday looks like it will have a better chance for rain than Saturday.

One thing working in the favor of dry weather is the very low humidity values that will settle in. At least for Saturday, that will make it even harder for the rain to reach the surface.

At the very least, a deck of thin overcast will likely overspread the area, filtering the sunshine.

Temperatures this weekend should continue to be in the upper half of the 70s or perhaps the low 80s.

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Follow Meteorologist Drew Montreuil:
Meteorologist Drew Montreuil has been forecasting the weather in the Finger Lakes region since 2006 and has degrees in meteorology from SUNY Oswego (B.S. with Honors) and Cornell (M.S.). Drew and his wife have four young boys. When not working or playing with the boys, he is probably out for a run through the countryside.

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