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Union Square, CT Weather Forecast

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Union Square, CT Weather Forecast

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Union Square CT weather - Clear - 57°F
Clear
57°F
Updated 5:19 am
Feels Like 48°F
Humidity 59%
Wind NNE 12 mph
Barometer  30.16 in
Dew Point 43°F
Union Square CT weather - Clear - 14°C
Clear
14°C
Updated 5:19 am
Feels Like 9°C
Humidity 59%
Wind NNE 19 km/h
Barometer  102.1 kPa
Dew Point 6°C
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Union Square Weather Forecast

TODAY TONIGHT SUNDAY SUNDAY NIGHT MONDAY MONDAY NIGHT TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY THURSDAY NIGHT
Union Square, CT Weather - Today Mostly Sunny Union Square, CT Weather - Tonight Partly Cloudy Union Square, CT Weather - Sunday Chance Of Rain Union Square, CT Weather - Sunday Night Chance Of T-Storm Union Square, CT Weather - Monday Chance Of Rain Union Square, CT Weather - Monday Night Mostly Cloudy Union Square, CT Weather - Tuesday Mostly Cloudy Union Square, CT Weather - Tuesday Night Mostly Cloudy Union Square, CT Weather - Wednesday Partly Sunny Union Square, CT Weather - Wednesday Night Chance Of Showers Union Square, CT Weather - Thursday Chance Of Showers Union Square, CT Weather - Thursday Night Chance Of Showers
Mostly Sunny Partly Cloudy Chance of Rain Chance of T-Storm Chance of Rain Mostly Cloudy Mostly Cloudy Mostly Cloudy Partly Sunny Chance of Showers Chance of Showers Chance of Showers
Hi: 69°FHi: 21°C
 Lo: 51°FLo: 11°C Hi: 65°FHi: 18°C
 Lo: 51°FLo: 11°C Hi: 65°FHi: 18°C
 Lo: 49°FLo: 9°C Hi: 61°FHi: 16°C
 Lo: 45°FLo: 7°C Hi: 61°FHi: 16°C
 Lo: 45°FLo: 7°C Hi: 61°FHi: 16°C
 Lo: 45°FLo: 7°C
POP: 100% POP: 100% POP: 20% POP: 30% POP: 30% POP: 40%
POP = Probability of Precipitation.
Weather Outlook Updated: 317 AM EDT Sat Sep 19 2026 Union Square, CT Weather - WeatherWorld.com

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Union Square Forecast Discussion

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Issued: 408 AM EDT Sat Sep 19 2026

Key Messages

1) Widespread rain with isolated thunder Sunday into Sunday night. Marginal flood threat.

2) Breezy and cool conditions likely mid to late next week, with periods of unsettled weather possible. Potential for minor to moderate coastal flood and shoreline impacts mid to late next week.


Discussion

... .KEY MESSAGE 1... Frontal system with wave of low pressure for the close of this weekend will eventually settle to the south of the region into early next week. Potential for heavy rain Sunda...