Weather Planner: Thursday, August 20, 2026

finger lakes weather forecast thursday august 20 2026 small birds sit on a wire stretching across the image with gray rainy skies above and a field with some goldenrod below
Photo by Joan Lockwood

Weather Planner: Thursday, August 20, 2026

An area of rain Thursday will bisect the region with a sharp cut-off between rainier conditions to the south and dry weather to the north. For areas where it rains, it may come down steadily for a good portion of the day, starting in the morning and ending in the afternoon. Uncertainty remains in just how far north the rain will make it, though. Some rainy areas may see temperatures stuck in the 60s, while 70s are more likely to the north. A dry overnight is expected with some areas of fog and lows in the 50s.

Humidity, Air Quality

Dewpoints: Somewhat muggy with dewpoints in the mid 60s.

Air Quality Index: No wildfire smoke—air quality normal—during the day. Some increase in smoke with localized minor impacts on air quality overnight.

 

Early Morning (3-7 AM)

Cloudy.

Rain entering the western Southern Tier.

North and northwest winds under 5 mph.

Temperatures in the mid and upper 50s to near 60 degrees.

Morning (7-11 AM)

Cloudy.

Steady rain possible across the southern half of the region. Some occasional showers possibly as far north as the Thruway.

North and northwest winds under 5 mph.

Temperatures rise to the mid 60s in the south, upper 60s to the north.

Midday (11 AM-1 PM)

Cloudy.

Steady rain possible across the southern half of the region. Some occasional showers possibly as far north as the Thruway.

North and northwest winds under 5 mph.

Temperatures steady in the mid 60s to the south, rising to the low 70s to the north.

Afternoon (1-5 PM)

Cloudy.

Steady rain possible across the southern half of the region, ending from west to east through the afternoon. Some occasional showers possibly as far north as the Thruway.

North and northwest winds under 5 mph.

Temperatures rising to the upper 60s to near 70 to the south and to the mid 70s to the north.

Late Afternoon (5-7 PM)

Late sun increasing from west to east.

Lingering showers in the far east, coming to an end.

North winds under 5 mph.

Temperatures steady with upper 60s to near 70 to the south and to the mid 70s to the north.

Evening (7-11 PM)

Becoming mostly clear. Areas of fog.

No precipitation is expected.

Calm winds.

Temperatures drop to the low and mid 60s.

Overnight (11 PM-3 AM)

Mostly clear. Areas of fog.

No precipitation is expected.

Calm winds.

Temperatures ranging through the 50s.

Friday Preview

Sunny with just a few small clouds. Highs 75-80 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.

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