Cold front sweeps away heat and humidity Friday Night

finger lakes weather forecast friday august 13 2021 showers storms hot humid cold front
A cooler, less humid weekend is ahead after a cold front moves through the region late Friday night. [Photo by Meteorologist Drew Montreuil]

Transitioning Weather

High levels of humidity and warm temperatures will remain in the Finger Lakes for one more day before a cold front brings in some relief for the weekend.

Skies are mixed across the Finger Lakes this Friday morning, but no rain is in the region. The cold front is still well to the west over the central Great Lakes.

Showers and thunderstorms will pop up this afternoon, though they may be limited in coverage, like the last several days. Any storms that manage to develop will have the potential for frequent lightning and a few gusty winds.

Temperatures will not reach quite the heights they did the last few days, with most areas topping out in the mid 80s. A few warmer pockets will be possible, depending on the amount of sunshine and development of any showers and storms. Heavy, muggy air will remain locked in place with dewpoints near or above 70 degrees.

Showers and a few storms will increase in coverage tonight and especially during the middle of the night as the cold front moves into the region. A few downpours will be possible, especially in the early evening. Some areas, though, may see little to no rain.

By Saturday morning, the front will be through the region. Temperatures will drop from near 70 much of the night into the mid 60s by dawn. Dewpoints will drop into the upper 50s.

A few stray showers may linger very early Saturday, but the majority of the day will be rain-free. Sunshine will increase through the morning, then mix with fair weather clouds during the afternoon.

Temperatures will top out in the mid to perhaps upper 70s while afternoon dewpoints continue to drop to the mid and even low 50s.

finger lakes weather 7-day forecast friday august 13 2021
This graphic represents an average over the entire Finger Lakes region. Localized variations should be expected. Click to enlarge.

Tropical Airmass

The respite from the humidity will last through Sunday and Monday. Both days will have sunshine filtered through thin clouds but no precipitation.

Morning lows both Sunday and Monday will be comfortable in the mid 50s. Fog will likely develop in the usual river valley locations.

Sunday will see highs sticking to the mid 70s. Monday will turn a bit warmer though, with highs around 80.

By Monday, Tropical Storm Fred, currently just a disorganized disturbance, will make landfall along the far western coast of Florida and track into the Southeastern United States. It seems less and less likely that Fred will remain organized long enough to survive a trip this far north.

However, the presence of this tropical storm will help push a tropical air mass northward, increasing our humidity and chances for downpours during the middle and end of next week.

Scattered showers and rumbles of thunder will be possible Tuesday, Wednesday, Thursday, and possibly into Friday.

Temperatures will climb into the low and mid 80s with dewpoints pushing back towards 70. The severe thunderstorm threats will likely be minimal at best, but the atmosphere will have plenty of moisture for downpours, nonetheless.

Obviously, this is still a ways out, so the finer details are highly uncertain and dependent on the evolution, strength, and track of Fred.

More Information:

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finger lakes weather 7-day forecast friday august 13 2021
This graphic represents an average over the entire Finger Lakes region. Localized variations should be expected.

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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.