Cooler air builds in with the promise of steady rain Friday

finger lakes weather forecast thursday may 27 2021 sun clouds cooler rainy friday
Dry and cool conditions are building into the Finger Lakes for today, but a steady, soaking rain is on the way for Friday. [Photo by Helen Heizyk]

New Chilly Pattern

Northwest winds set up last night behind the cold front responsible for Wednesday’s thunderstorms.

Cool, much less humid air is moving into the region as a result and will stick around for a few days.

Skies this morning are mixed, with some areas of clouds and some areas with clear skies. The overall trend will be for fewer clouds as we head into the afternoon. Northwest winds will continue to blow at around 10 mph.

Temperatures today will be about twenty degrees cooler than yesterday, with highs in the low and mostly mid 60s. Dewpoints will also drop by about twenty degrees and will stick comfortably in the 40s.

Clouds will begin to increase tonight as low pressure tracks east through the Ohio Valley. The first rain showers will arrive near dawn Friday, with a steady increase in rain throughout the morning.

The rain will continue steadily through the afternoon with a few pockets of heavier rainfall. The rain will become less widespread but will continue off and on through Friday evening. Scattered showers will persist through the night and even into early Saturday.

Before the rain arrives early tomorrow, temperatures will have fallen into the mid and upper 40s. Temperatures will then hold steady, or even retreat a degree or two, during the day Friday. Few, if any, areas will reach 50 degrees.

The lingering rain means temperatures will also stay in the 40s Saturday night, so there are no frost worries locally.

Expected rain amounts have increased, and there is now a decent chance for a swatch of one to two inch rain amounts across the Finger Lakes. Not all areas will get these amounts, but even those that do not get over an inch should at least get close.

Some sun may try to work out later in the day Saturday, though it is also possible that showers will linger. If the sun comes out, highs will be in the upper 50s. If not, low 50s. Or, if it is some mix, highs will be in the mid 50s, and that is what I expect to happen.

finger lakes weather 7-day forecast thursday may 27 2021
This graphic represents an average over the entire Finger Lakes region. Localized variations should be expected. Click to enlarge.

Returning to Average

The chilly air will not stick around too long. Already by Sunday, highs should be back into the mid 60s.

I’ve kept rain out of the forecast for Sunday so far, but there is some uncertainty. If any rain does move in, it will likely just be a few showers later in the afternoon.

Monday and Tuesday are both looking dry with clouds and some sun mixing in. Highs should return to around 70 degrees.

By Wednesday, showers will again be possible. Temperatures will lose a couple degrees with the rain chances, so highs will probably end up just shy of 70.

The end of next week also looks wet, with multiple waves of atmospheric energy passing through. The details are uncertain this far in advance, but there looks to be a good chance for at least one rainy day.

Temperatures will hold steady in the neighborhood of 70 degrees, which is close to the average highs for early June.

A gradual return to warmer, more humid weather is expected thereafter, though it does not look like an excessively hot air mass, with highs mostly sticking in the 75-85 degree range.

More Information:

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finger lakes weather 7-day forecast thursday may 27 2021
This graphic represents an average over the entire Finger Lakes region. Localized variations should be expected.

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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.