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Grand Island, NY Weather Forecast

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Grand Island, NY Weather Forecast

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Grand Island NY weather - Mostly Cloudy - 79°F
Mostly Cloudy
79°F
Updated 4:34 pm
Feels Like 77°F
Humidity 50%
Wind WSW 14 mph
Barometer  29.95 in
Dew Point 59°F
Grand Island NY weather - Mostly Cloudy - 26°C
Mostly Cloudy
26°C
Updated 4:34 pm
Feels Like 25°C
Humidity 50%
Wind WSW 23 km/h
Barometer  101.4 kPa
Dew Point 15°C
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Grand Island Weather Forecast

THIS AFTERNOON TONIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY THURSDAY NIGHT FRIDAY FRIDAY NIGHT SATURDAY SATURDAY NIGHT SUNDAY SUNDAY NIGHT
Grand Island, NY Weather - This Afternoon Mostly Sunny Grand Island, NY Weather - Tonight Partly Cloudy Grand Island, NY Weather - Wednesday Chance Of T-Storm Grand Island, NY Weather - Wednesday Night Chance Of T-Storm Grand Island, NY Weather - Thursday Patchy Fog Grand Island, NY Weather - Thursday Night Patchy Fog Grand Island, NY Weather - Friday Patchy Fog Grand Island, NY Weather - Friday Night Partly Cloudy Grand Island, NY Weather - Saturday Chance Of T-Storm Grand Island, NY Weather - Saturday Night Chance Of T-Storm Grand Island, NY Weather - Sunday Chance Of T-Storm Grand Island, NY Weather - Sunday Night Chance Of T-Storm
Mostly Sunny Partly Cloudy Chance of T-Storm Chance of T-Storm Patchy Fog Patchy Fog Patchy Fog Partly Cloudy Chance of T-Storm Chance of T-Storm Chance of T-Storm Chance of T-Storm
Lo: 59°FLo: 15°C Hi: 75°FHi: 24°C
 Lo: 53°FLo: 12°C Lo: 55°FLo: 13°C Hi: 79°FHi: 26°C
 Lo: 59°FLo: 15°C Hi: 79°FHi: 26°C
 Lo: 59°FLo: 15°C Hi: 71°FHi: 22°C
 Lo: 55°FLo: 13°C
POP: 80% POP: 60% POP: 70% POP: 80% POP: 80% POP: 80%
POP = Probability of Precipitation.
Weather Outlook Updated: 230 PM EDT Tue Aug 18 2026 Grand Island, NY Weather - WeatherWorld.com

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Grand Island Forecast Discussion

Issued: 153 PM EDT Tue Aug 18 2026

Key Messages

1) A round of showers and scattered thunderstorms late tonight and Wednesday.

2) Periodic showers and scattered thunderstorms this weekend.


Discussion

... Key Message 1... A round of showers and scattered thunderstorms late tonight and Wednesday.

High pressure at the surface and aloft will exit east tonight, allowing a warm frontal segment to lift into the region. Cyclonic flow aloft becomes established over our area, with a few embedded shortwave disturbanc...