Small chances for isolated showers continue

finger lakes weather forecast tuesday august 18 2020 finger lakes weather forecast sun clouds showers cool
A few isolated showers will dot the region this afternoon as temperatures top out in the low and mid 70s. [Photo by Joan Lockwood]

Few Showers & Cool Air

A meandering low pressure system over eastern Canada will keep a small chance for rain in our forecast through tomorrow morning.

Skies are off to a sunny start this morning, but cumulus clouds will start to bubble up before too long. Through the midday and afternoon hours, there should be plenty of cloud cover with some occasional glimpses of sun.

Rain will be more limited than yesterday as small, brief showers become widely scattered this afternoon. Most areas will not see rain today, and those that do will only see minor amounts. Most of these showers should last just 10-20 minutes, if even that long, as they move progressively to the southeast.

Northwest winds will be on the blustery side today with speeds of 7-12 mph and gusts around 25 mph. These winds will keep bringing in cooler air. Temperatures today will be cooler than yesterday with highs in the low and mid 70s.

Skies will remain partly cloudy tonight and a stray shower cannot be totally ruled out. This will especially be the case north of I-90 as a minor lake effect response triggers some rain.

Morning lows on Wednesday will range from near 60 close to Lake Ontario to the low 50s in the valleys of the Southern Tier. Most areas near lakes will stay in the upper 50s, while areas further away will be in the mid 50s.

A small piece of energy rotating around the low will send a few final showers into the area Wednesday morning. These will again be light and brief.

Wednesday afternoon should trend sunnier with clearing skies late. Northwest winds will be a few miles per hour less than today, but gusts at or above 20 mph will still be possible. Highs will top out a couple degrees on either side of 70.

finger lakes weather 7-day forecast tuesday august 18 2020
This graphic represents an average over the entire Finger Lakes region. Localized variations should be expected. Click to enlarge.

Quiet Late Week and Weekend Weather

High pressure will build in Wednesday night and take hold of our weather for an extended period.

Thursday morning will start off cool with low and mid 50s across the northern two-thirds of the region and mid and upper 40s in the Southern Tier.

Winds Thursday will be from the west at around 5 mph with minor gusting. Fair weather clouds will develop and may become rather thick for a time in the afternoon. No rain is expected, though.

Temperatures will start to rebound with highs in the mid and upper 70s and overnight lows in the upper 50s and low 60s.

Friday will have a pleasant mix of sun and clouds, while Saturday may see a deck of thin clouds work in from the south. No rain is expected either day.

High temperatures will continue to leap upwards with low and mid 80s Friday and mid to upper 80s on Saturday.

By Sunday, the models start to diverge and confidence trends downward in a hurry. Sunday should still have temperatures in the 80s and there is a small chance for some rain late.

The models remain a mixed mess for next week. There should be some rain chances, but when and how much is impossible to say at this point.

Temperatures will probably jump around with a mix of warm to hot days and cooler ones. The coolness showing on the models may be the result of rainier days rather than a significant pattern shift. Stay tuned.

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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 and also run a goat milk soap business, Ye Olde Goat Cart. When not working or playing with the boys, he is probably out for a run through the countryside.