Rain moves through the Finger Lakes Thursday Night

finger lakes weather forecast thursday august 17 2023 sun clouds nighttime rain thunderstorms
A few showers may pop up in the late afternoon and evening, but the best chance for rain will wait until midnight or later. [Photo by Margaret Fabrizio, taken in Varna]

Cold Front

The next weather maker will move across the Great Lakes today, bringing rain to the Finger Lakes mainly during the nighttime hours.

The day is starting off with some morning cloudiness. As the sun climbs higher in the sky, these clouds should burn off. Fair weather clouds will quickly develop in their place and should be plentiful throughout the rest of the day.

South-southwest winds will increase through the morning, reaching speeds of just over 10 mph for the afternoon. This will drive temperatures into the low and mid 80s, though a few higher elevations may not quite break into the 80s. Dewpoints will also rise well into the 60s, so it will feel a bit muggy.

The first chances for rain will not start to pop up until 4 or 5 PM at the earliest. A few stray showers and thunderstorms will be possible in the late afternoon and early evening hours. During this time, most areas will still remain dry, though.

Rain may not substantially increase until after midnight. Showers and thunderstorms along the front will become widespread but should move along quickly. Some locally heavy downpours are possible, but overall, the flooding risk looks low. Severe weather is not expected, either.

With the clouds and rain, it will remain a mild, muggy night with lows in the mid 60s.

Steady rain will be well to the east by Friday morning, though a few lingering showers will be possible. The chances for stray showers will continue through the afternoon, increasing late in the day and into the evening hours.

There is some question as to how widespread the showers will be on Friday, and whether or not drizzle persists between the showers.

Regardless, it will be a cool, rather cloudy day. High temperatures will range from the upper 60s in higher elevations to the low 70s for most areas. West-northwest winds will become blustery with speeds of 10-15 mph. West of Keuka Lake, gusts will top out around 35 mph, with gusts near 30 mph to the east.

Showers enhanced by Lake Ontario will spread through the area Friday night, especially focusing on the northern and eastern halves of the region. A few of these may linger into the early morning hours Saturday, mainly across northern Cayuga and Onondaga counties.

finger lakes weather 7-day forecast thu aug 17 | thur, late showers, storms low 80 | fri, occasional showers low 70 | sat, sun and clouds mid 70 | sun, sun and clouds low 80 | mon, sun and clouds near 80 | tues, late showers, storms near 80 | wed, sun and clouds mid 70
This graphic represents an average over the entire Finger Lakes region. Localized variations should be expected. Click to enlarge.

Drying Out

Saturday morning will start with temperatures in the mid and upper 50s. Sunshine will increase, but so too will northwest winds. Wind speeds over 10 mph are likely during the morning before dropping to around 10 mph for the afternoon.

The extra sunshine should help temperatures warm a couple degrees over Friday, but the wind will prevent any greater gains. Most areas will still be in the low 70s, though upper 60s will become less common and a few of the typically warmer areas may approach 75 degrees.

Saturday night will be mostly clear, with lows well into the 50s once again. However, by Sunday morning, winds will be turning to the southwest.

With another dry, sunny day, temperatures should make a much larger leap with afternoon highs Sunday reaching the low 80s.

Another front will drop south through the area Monday. This front looks moisture starved and lacks support from the upper levels of the atmosphere. A stray shower may be possible, but most areas should stay dry.

There will be a better chance for rain late in the day Tuesday as a complex of showers and thunderstorms potentially passes by. This remains highly uncertain, so if you have plans Tuesday, especially late, keep checking for updates.

Temperatures will most likely stick to the 70s for the second half of next week, though the spread on the models is large enough to cast a shadow of doubt on the pattern and at least consider the chance for some warmer weather.

The chances for rain continue to look relatively low through the end of next week before picking up some for the weekend.

More Information:

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finger lakes weather 7-day forecast thu aug 17 | thur, late showers, storms low 80 | fri, occasional showers low 70 | sat, sun and clouds mid 70 | sun, sun and clouds low 80 | mon, sun and clouds near 80 | tues, late showers, storms near 80 | wed, sun and clouds mid 70
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.