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Lyndonville, NY Weather Forecast

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Clear

75°F

Updated	7:39 pm
Feels Like	77°F
Humidity	66%
Wind	W 7 mph
Barometer	29.92 in
Dew Point	63°F

Clear

24°C

Updated	7:39 pm
Feels Like	25°C
Humidity	66%
Wind	W 11 km/h
Barometer	101.3 kPa
Dew Point	17°C

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Cloud Cover	65%
uv UV Index	5
Sunrise	6:23 AM
Sunset	8:10 PM
Moonrise	2:14 PM
Moonset	11:11 PM

Civil Twilight
5:51 AM to 6:21 AM
8:09 PM to 8:39 PM
Lyndonville NY Weather - First Quarter Moon

First Quarter Moon

Lyndonville Weather Forecast

TONIGHT	THURSDAY	THURSDAY NIGHT	FRIDAY	FRIDAY NIGHT	SATURDAY	SATURDAY NIGHT	SUNDAY	SUNDAY NIGHT	MONDAY	MONDAY NIGHT	TUESDAY

Chance of Showers	Patchy Fog	Clear	Sunny	Partly Cloudy	Chance of T-Storm	Chance of T-Storm	Chance of Showers	Chance of Showers	Mostly Sunny	Partly Cloudy	Mostly Sunny
Lo: 53°FLo: 12°C	Hi: 79°FHi: 26°C	Lo: 53°FLo: 12°C	Hi: 80°FHi: 27°C	Lo: 60°FLo: 16°C	Hi: 81°FHi: 27°C	Lo: 60°FLo: 16°C	Hi: 79°FHi: 26°C	Lo: 55°FLo: 13°C	Hi: 75°FHi: 24°C	Lo: 55°FLo: 13°C	Hi: 79°FHi: 26°C
POP: 40%					POP: 70%	POP: 70%	POP: 50%	POP: 50%

POP = Probability of Precipitation.

Weather Outlook Updated: 400 PM EDT Wed Aug 19 2026 Lyndonville, NY Weather - WeatherWorld.com

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Lyndonville Forecast Discussion

Issued: 709 PM EDT Wed Aug 19 2026

Key Messages

1) Isolated showers and thunderstorms into this evening, then a chance of showers Thursday across the Southern Tier.

2) Periodic showers and scattered thunderstorms this weekend.

Discussion

... Key Message 1...Isolated showers and thunderstorms into this evening, then a chance of showers Thursday across the Southern Tier.

A secondary cold front, marked in surface observations by a wind shift and notable dewpoint boundary, will drift southeast across the area...

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Weather 101: Term of the Day

Supercell Thunderstorm

Potentially the most dangerous of the convective storm types. Storms possessing this structure have been observed to generate the vast majority of long-lived strong and violent (F2-F5) tornadoes, as well as downburst damage and large hail. It is defined as a thunderstorm consisting of one quasi-steady to rotating updraft which may exist for several hours. Supercells usually move to the right of the mean wind. These are called "Right Movers" and they are favored with veering winds. Occasionally, these thunderstorms will move to the left of the mean wind. These thunderstorms are called "Left Movers". These supercells typically don't last as long as their "Right Mover" cousins and they usually only produce large hail (greater than 3/4 inch in diameter) and severe wind gusts in the excess of 58 miles an hour. Left Movers are favored when you have backing winds. Radar will observe essentially one long-lived cell, but small perturbations to the cell structure may be evident. The stronger the updraft, the better the chance that the supercell will produce severe (hail greater than 3/4 inch in diameter, wind gusts greater than 58 miles an hour, and possibly a tornado) weather. Severe supercell development is most likely in an environment possessing great buoyancy (CAPE) and large vertical wind shear. A Bulk Richardson Number of between 15 and 35 favor supercell development. Typically, the hodograph will look like a horse shoe. This is due to the wind speed increasing rapidly with height and the wind direction either veering or backing rapidly with height.