Thursday details on upcoming rainy periods

finger lakes weather thursday may 9 2019 weather forecast rain weekend weather mother's day rain
Rain should hold off until late Thursday with some sunshine and warm temperatures beforehand. Plenty of rainy weather is on the way, though. [Photo by Meteorologist Drew Montreuil]

Rain Chances Thursday — Friday

A large weather system will move into the Finger Lakes late Thursday and continue to impact our region into Friday.

Out ahead of this system, winds have taken a more southerly direction and will become blustery today. Gusts of 30-40 mph will be common today with a few higher elevations gusting as high as 45 mph.

The sun will peek through the clouds from time to time today. Any sunshine will help the south winds warm the air.

High temperatures today will range from the mid 60s in the eastern and southern regions to the mid 70s in and around Rochester.

The first chances for rain will develop after 4 PM this afternoon when a few isolated showers and thunderstorms pop up. Most areas should stay dry through sunset. The chances for rain will increase between 8 PM and Midnight, but the precipitation will remain a scattered, on and off type rain. A few rumbles of thunder will remain possible.

After midnight, the rain will become widespread and steady, persisting until about dawn Friday. With the clouds, rain, and persistent south wind overnight, temperatures will only fall into the 50s by Friday morning.

Scattered showers will continue to be possible throughout Friday morning. Nonetheless, temperatures will push into the low and mid 70s ahead of a cold front. That front will move through during the midday and early afternoon hours with a small line of thunderstorms. These storms have an outside chance at producing some gusty winds.

After the mid-afternoon hours Friday, the chances for rain will diminish to an isolated light shower or a bit of drizzle which will continue into early Saturday morning. Temperatures Saturday morning will drop into the mid and upper 30s.

Weekend — Early Week Rain

Saturday will be a dry day between weather systems. Some sunshine will be possible, especially during the middle of the day.

A cool northwest wind will hold temperatures in the low and mid 50s.

Clouds will increase Saturday night and rain should move back into the area before the sun is up Sunday. Early on, the rain will concentrate in areas south of I-90 and in the Southern Tier in particular. The rain will spread north through the morning before tapering to showers for the afternoon.

A second batch of rain will move in Sunday Night and continue into early Monday. The rain should then focus on eastern areas Monday afternoon with steady light rain possible for areas east of Seneca Lake. Showers will remain possible to the west but will be more scattered.

Tuesday also looks cloudy and showery with on and off periods of light rain and drizzle.

Temperatures Sunday, Monday, and Tuesday may not escape the 40s. Sunday especially looks chilly with only low and mid 40s for highs.

Total rain amounts from today through Tuesday will likely be between 1.5 and 3 inches. Since the rain will be spread out, flash flooding and river flooding is not expected. Poor drainage areas will continue to be very wet.

More rain is possible late next week, but it remains too far in advance to be certain of any details.

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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.