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Old Lyme, CT Weather Forecast

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Old Lyme, CT Weather Forecast

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Old Lyme CT weather - Clear - 37°F
Clear
37°F
Updated 3:35 am
Feels Like 47°F
Humidity 92%
Wind N 6 mph
Barometer  30.52 in
Dew Point 35°F
Old Lyme CT weather - Clear - 3°C
Clear
3°C
Updated 3:35 am
Feels Like 8°C
Humidity 92%
Wind N 10 km/h
Barometer  103.3 kPa
Dew Point 2°C
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Old Lyme Weather Forecast

TODAY TONIGHT TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT THURSDAY THURSDAY NIGHT FRIDAY FRIDAY NIGHT SATURDAY SATURDAY NIGHT
Old Lyme, CT Weather - Today Sunny Old Lyme, CT Weather - Tonight Partly Cloudy Old Lyme, CT Weather - Tuesday Mostly Cloudy Old Lyme, CT Weather - Tuesday Night Clearing Old Lyme, CT Weather - Wednesday Mostly Sunny Old Lyme, CT Weather - Wednesday Night Partly Cloudy Old Lyme, CT Weather - Thursday Mostly Sunny Old Lyme, CT Weather - Thursday Night Clear Old Lyme, CT Weather - Friday Sunny Old Lyme, CT Weather - Friday Night Mostly Clear Old Lyme, CT Weather - Saturday Sunny Old Lyme, CT Weather - Saturday Night Mostly Clear
Sunny Partly Cloudy Mostly Cloudy Clearing Mostly Sunny Partly Cloudy Mostly Sunny Clear Sunny Mostly Clear Sunny Mostly Clear
Hi: 61°FHi: 16°C
 Lo: 41°FLo: 5°C Hi: 61°FHi: 16°C
 Lo: 41°FLo: 5°C Hi: 59°FHi: 15°C
 Lo: 40°FLo: 4°C Hi: 65°FHi: 18°C
 Lo: 40°FLo: 4°C Hi: 59°FHi: 15°C
 Lo: 35°FLo: 2°C Hi: 59°FHi: 15°C
 Lo: 39°FLo: 4°C
POP = Probability of Precipitation.
Weather Outlook Updated: 222 AM EDT Mon Oct 19 2026 Old Lyme, CT Weather - WeatherWorld.com

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Issued: 303 AM EDT Mon Oct 19 2026

Key Messages

1) A noreaster is expected to remain south and east of the region thru the week. Some coastal impacts remain possible.


Discussion

... .KEY MESSAGE 1... Low pres was evident on water vapor east of Cape Hatteras this morning. This low is modeled to gradually deepen thru the week, and only slowly take a general northeast track thru the period.

The latest model trends and consensus keep the impacts to the local area low. The NBM now has mainly dry weather thru the week, with only 20-30 perc...