Heat builds into the Finger Lakes this weekend

finger lakes weather forecast friday june 25 2021 weekend weather hot humid
Mid 80s are likely Friday and Saturday before 90s become widespread Sunday and Monday. [Photo by Meteorologist Drew Montreuil]

Turning Hot

An increasing hot and humid weather pattern will unfold across the region, peaking on Sunday and Monday.

It will still be plenty warm for Friday and Saturday as well, with widespread 80s throughout the region.

A stalled out front over the Midwest has led to widespread showers and thunderstorms this morning from Missouri to Michigan. Out ahead of this precipitation, thin clouds are spreading into the Finger Lakes.

These clouds will stick around throughout the day, filtering the intensity of the sunshine. No daytime or evening rain is expected, though.

Steady south winds will continue today at around 10 mph with gusts to 30 mph. These winds will continue to drive the temperatures upward, with highs today ranging through the 80s. Monroe and Wayne counties will be warmest with some upper 80s, while higher elevations will stick to the low 80s. Most areas will be in the mid 80s.

Overnight, a batch of showers will push into the region during the predawn hours and linger into the mid morning Saturday. Most of the rain will skirt north of the region, but chances are high that most areas will see at least some rain Saturday morning.

By noon, most of the rain will be north of the region and some sunshine will poke out between the clouds. South winds will increase further, with speeds near 15 mph and gusts reaching 35 mph.

Lingering thin clouds will stick around into Sunday, resulting in filtered sunshine like today. Later in the afternoon, those clouds may depart.

Sunday’s winds will turn to the southwest, but will continue to blow at around 10 mph.

Most areas will get into the 90s on Sunday, with mid 90s likely from Rochester to Penn Yan to Syracuse.

finger lakes weather 7-day forecast june 25 2021
This graphic represents an average over the entire Finger Lakes region. Localized variations should be expected. Click to enlarge.

Heat Advisories will likely be issued with heat index values rising into the upper 90s. No rain is expected on Sunday.

Hot and Stormy Week

As hot as Sunday will be, Monday may be a couple degrees hotter. More areas will see mid 90s, while even higher elevations have a shot at hitting 90 degrees. A few heat index values could approach 100 degrees.

Most areas will not see rain on Monday, but a few widely isolated showers and storms may pop up late in the afternoon.

Over the following days, the chances for showers and storms will increase. Temperatures will not be able to get as hot as a result.

Tuesday will have scattered showers and storms. Roughly half of the area may see rain. Highs will be in the upper 80s. Wednesday will have more showers and storms, but some areas will still likely stay dry. Highs will retreat a bit further, reaching mostly the mid 80s.

The best chance for rain and thunderstorms will come starting Wednesday night, through Thursday, and possibly into Friday.

It is too early to determine what if any severe threat there may be. The atmosphere will have plenty of moisture to work with, so heavy rain will be possible at least.

Temperatures should settle in the upper 70s and low 80s starting Friday and lasting through next weekend with dropping rain chances.

More Information:

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finger lakes weather 7-day forecast june 25 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 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.