Siena, NY Weather Forecast

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Siena, NY Weather Forecast

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Siena NY weather  - Light Rain - 59°F
Light Rain
59°F
Updated 2:49 pm
Feels Like 57°F
Humidity 96%
Wind N 0 mph
Barometer  29.97 in
Dew Point 58°F
Siena NY weather  - Light Rain - 15°C
Light Rain
15°C
Updated 2:49 pm
Feels Like 14°C
Humidity 96%
Wind N 0 km/h
Barometer  101.5 kPa
Dew Point 14°C

Siena Weather Forecast

TODAY TONIGHT MONDAY MONDAY NIGHT TUESDAY TUESDAY NIGHT WEDNESDAY THURSDAY THURSDAY NIGHT FRIDAY SATURDAY
Siena, NY Weather - Today Rain Siena, NY Weather - Tonight Rain Siena, NY Weather - Monday Mostly Cloudy Siena, NY Weather - Monday Night Mostly Cloudy Siena, NY Weather - Tuesday Mostly Cloudy Siena, NY Weather - Tuesday Night Mostly Cloudy Siena, NY Weather - Wednesday Mostly Cloudy Siena, NY Weather - Thursday Mostly Cloudy Siena, NY Weather - Thursday Night Chance Of Showers Siena, NY Weather - Friday Chance Of Showers Siena, NY Weather - Saturday Mostly Cloudy
Rain Rain Mostly Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Chance of Showers Chance of Showers Mostly Cloudy
Hi: 60°FHi: 16°C
Lo: 50°FLo: 10°C Hi: 65°FHi: 18°C
Lo: 45°FLo: 7°C Hi: 61°FHi: 16°C
Hi: 65°FHi: 18°C
Lo: 45°FLo: 7°C
Hi: 65°FHi: 18°C
Lo: 45°FLo: 7°C
Hi: 65°FHi: 18°C
Lo: 45°FLo: 7°C
Hi: 65°FHi: 18°C
Lo: 49°FLo: 9°C
Hi: 65°FHi: 18°C
Lo: 49°FLo: 9°C
Hi: 69°FHi: 21°C
POP: 100% POP: 60% POP: 30% POP: 30%
POP = Probability of Precipitation.
Weather Outlook Updated: 830 AM EDT Sun Sep 20 2026 Siena, NY Weather - WeatherWorld.com

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Issued: 144 PM EDT Sun Sep 20 2026

Key Messages

1) Widespread light rain and drizzle taper off this evening, with generally dry conditions and below normal temperatures through midweek.

2) A coastal storm will track near the East Coast late this week, but confidence remains low on whether we will see impacts from this system at this time.


Discussion

...

Areas of light rain and drizzle will gradually taper off from NW to SE later this afternoon and evening, with mostly to partly cloudy skies then lingering through tonight. Where a few ...