Summertime heat in the Finger Lakes Wednesday

finger lakes weather forecast wednesday may 30 2018 hot humid summer
South winds and sunshine will push temperatures into the upper 80s with heat index values above 90 degrees for parts of the Finger Lakes on Wednesday. [Photo by Meteorologist Drew Montreuil]

Approaching 90 North of 90

Hot and humid conditions are expected on Wednesday with the hottest of the hot along and north of I-90.

A frontal boundary has lifted north of the region, opening us up to south winds and a hot, humid air mass.

Temperatures are off to the races this morning, starting out mostly in the low and mid 60s. Those temperatures should quickly rise through the 60s and 70s and into the 80s by midday.

High temperatures could approach 90 degrees in Monroe and Wayne County, with mid and upper 80s widespread throughout the rest of the region.

Areas that see temperatures reach 87º or 88º should expect it to feel more like 90º once the humidity is factored in. Heat index values north of I-90 will be in the low 90s.

Skies will be mostly sunny to start with cumulus clouds quickly developing this morning. One or two pop-up showers are not out of the question, especially late this afternoon. Almost everyone should remain dry, though.

Temperatures will remain near or above 70º into the late evening hours tonight. Low temperatures Thursday morning will range throughout the 60s with the warmest temperatures to the west.

Rain Chances Thursday & Friday

A spotty shower or two will remain possible Wednesday night and into Thursday.

Again, these will be very few and far between, so most areas will not see any rain through the mid-afternoon on Thursday.

By 4 or 5 pm on Thursday, the chance for a couple showers or thunderstorms will go up, especially over the western Finger Lakes. Storms will still be scattered, but those that do develop could have some heavy rain, lightning, and small hail or gusty winds.

Outside of any showers or storms Thursday, skies should be partly cloudy. High temperatures will mostly be in the 70s with some low 80s from Geneseo to Rochester to Geneva. The humidity will be very high with dew points near 70 degrees.

Stray showers may dot the region Thursday night and early Friday. Friday afternoon will have a much better chance of rain with scattered showers and storms throughout the region. Some areas may still get missed by the individual cells, but overall, most places should see rain on Friday.

Temperatures will rise into the low 80s before the showers and storms start to pop, thus putting a cap on how warm it will get. Dewpoints will again be around 70 degrees.

Weekend Weather Preview

The storm system that will help trigger showers and storms on Friday should clear out of the region before the sun rises on Saturday.

High pressure will build southeast from northern Canada, just keeping moisture locked away over the Mid-Atlantic region Saturday.

As a result, Saturday is currently looking dry with some sunshine. Temperatures will be a touch cooler than normal, with highs in the upper 60s to near 70 degrees.

A small disturbance will approach from the west on Sunday. That could touch off one or two showers late in the day, but most of Sunday also looks dry.

The south winds ahead of that system will try to bring some warmer air in, but it will also bring in cloud cover lingering over the Mid-Atlantic. Expect high temperatures to be a bit warmer than Saturday, but still cooler than it has been with highs near or just above 70 degrees.

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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.