Summery weather continues through the weekend

finger lakes weather forecast friday may 21 2021 hot warm weekend
After another hot day Friday, temperatures will back off but remain warm this weekend with some scattered rain chances. [Photo by Meteorologist Drew Montreuil]

Warm Weekend

A summertime air mass will remain in the Finger Lakes for the foreseeable future, but some chances for rain will also be introduced.

No rain is expected today as high pressure remains strong just off the New England coast. This high will keep our surface winds from the southwest and west today, even as winds aloft within a weak jet stream come in from the northwest and north.

Riding along the jet stream is an area of thin clouds moving through Ontario, Canada, and the Upper Great Lakes. These will move in later this morning and this afternoon. The sun will not be blocked completely, but will be filtered somewhat.

Nonetheless, temperatures today should be equally hot as yesterday. Most areas will end up between 85 and 90 degrees. Dewpoints will stay near or under 60 degrees, so it will at least not feel too humid.

High pressure will weaken today and redevelop over the southern Appalachians tomorrow. This will turn our winds to the west-northwest and allow some rain chances to develop.

Saturday and Sunday will still both see highs reach the low 80s. Both days have a chance for some rain, though tomorrow’s rain chances are rather uncertain. A few scattered showers will be possible at any time during the day, but many areas may end up staying dry.

Sunday has a better chance for showers and some thunderstorms during the afternoon as a cold front drops south into the region. A few storms could have some gusty winds. Even then, though, there will probably be some areas that see little to no rain.

finger lakes weather 7-day forecast friday may 21 2021
This graphic represents an average over the entire Finger Lakes region. Localized variations should be expected. Click to enlarge.

Summer Persists

Monday will be the coolest day of the upcoming week in the wake of Sunday’s cold front. Morning lows will start well into the 40s, but a good deal of sunshine and the northwest winds dissipating will mean afternoon highs will reach the low 70s.

By Tuesday, temperatures should be back near or above 80 degrees. Humidity will also move in, with dewpoints possibly reaching into the 60s.

Most of Tuesday looks dry, but late in the afternoon, some scattered showers and thunderstorms will be possible.

Wednesday looks to have a better chance for showers and storms as another cold front moves into the area. This set up will continue to be watched carefully. With models showing highs into the mid 80s and ample humidity, there should be plenty of fuel for thunderstorms.

Temperatures will head back into the 70s for Thursday and Friday next week behind Wednesday’s cold front. These pleasant temperatures may persist into next weekend, though there may also be some additional rain chances that could change the temperature outlook.

Regardless, warm temperatures look to be here to stay as we head into early June at the very least. For the gardeners and farmers, frost looks highly unlikely given the short and medium range outlook and our climatology.

More Information:

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finger lakes weather 7-day forecast friday may 21 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. When not working or playing with the boys, he is probably out for a run through the countryside.