Sunny, warm weather continues. When is the next chance for rain?

finger lakes weather forecast thursday may 21 2020
The influence of high pressure remains strong today but will start to break down as the high departs. [Photo by Ted Marks, Atwater Vineyards]

High Pressure Slides Away

Today will be another sunny, warm day across the Finger Lakes thanks to a strong high pressure system.

This high has moved little of the last 24 hours and resides over southern New England. Throughout the day, though, the high will move southeast out into the Atlantic Ocean.

At first, that shift will simply mean a change in wind direction from the southeast to the south, allowing even warmer air to move in.

The entire region should break 70 degrees today with some mid 70s across the I-90 corridor. A bigger change in temperatures will come tonight, with most areas staying near or above 50 degrees.

Clouds will remain scarce today and this evening, but a few clouds may start to press in from the south after midnight.

These clouds will be associated with a weak low that will drift northward into the Mid-Atlantic on the backside of the high pressure system. It may become mostly cloudy for a time Friday, but periods of sunshine are also expected.

The clouds should not impact the temperatures, with highs generally a degree or two warmer than today.

Late Friday, and especially Friday night, rain will move in from the south. Several hours of steady rain may fall, but by Saturday morning, the rain should pull away.

finger lakes weather 7-day forecast thursday may 21 2020
Click to enlarge.

Feeling Summery

Clouds will break up through the day on Saturday, and by the late afternoon, clouds should again be a scarcity.

Temperatures will continue their upward trend, adding another 1-3 degrees to the highs on Saturday.

A few clouds will pass through on Sunday and a shower cannot be totally ruled out in the far western reaches of the region. Most will stay dry, though. Highs will remain in the mid 70s.

A small chance for a shower exists on Memorial Day. Otherwise it will be sunny and temperatures will resume their climb. Most areas should see upper 70s on Monday.

Humidity levels will start to increase next week. Tuesday and Wednesday both could see some pop-up afternoon thunderstorms. High temperatures should at least approach 80, but it could be warmer. Overnight lows may stay near or above 60 degrees.

By next Thursday, Friday, and Saturday, it may be downright hot, with highs possibly well into the 80s. It is a bit early to count on that as a certainty, though.

A temporary cool-down is hinted at on the other side of the heat, lasting just two or three days with highs back in the 60s.

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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.