Live Weather & Forecast
Weather in Old Lyme
Connecticut, United States · Real-time conditions & 3-day outlook
22°C
Feels like 25°C
72°F / Feels 76°F
Sunny
Old Lyme, Connecticut
🌞 Daytime
Updated: 2026-04-15 11:15
Humidity
66%
Wind
11.2 km/h SW
Wind Gust
23.4 km/h
Pressure
1014 mb
Visibility
16 km
UV Index
5.9
(Moderate)
Precipitation
0 mm
Cloud Cover
0%
Dew Point
18.4°C
Wind Degree
228°
Air Quality Index
US EPA: Moderate
UK DEFRA: Low (2)
CO
208.9 μg/m³
NO₂
20.9 μg/m³
O₃
78 μg/m³
SO₂
5.6 μg/m³
PM 2.5
23.7 μg/m³
PM 10
25.8 μg/m³
Today's Hourly Forecast
24-hour breakdown for Old Lyme, Connecticut
12 AM
17°
Patchy rain nearby
1 AM
17°
Patchy rain nearby
2 AM
16°
Clear
3 AM
16°
Clear
4 AM
15°
Clear
5 AM
15°
Clear
6 AM
15°
Clear
7 AM
16°
Sunny
8 AM
17°
Sunny
9 AM
19°
Sunny
10 AM
21°
Sunny
11 AM
22°
Sunny
12 PM
27°
Sunny
1 PM
28°
Sunny
2 PM
29°
Sunny
3 PM
29°
Sunny
4 PM
28°
Sunny
5 PM
28°
Sunny
6 PM
26°
Sunny
7 PM
24°
Sunny
8 PM
21°
Clear
9 PM
20°
Clear
10 PM
19°
Clear
11 PM
18°
Clear
3-Day Forecast
Daily overview for Old Lyme, Connecticut
Today
Patchy rain nearby
30°
/
15°
🌧️ 88% chance of rain
💧 Avg. humidity: 74%
💨 Max wind: 15.1 km/h
🌧️ Total precip: 0.16 mm
☀️ UV Index: 1.8
🌅 Sunrise: 06:09 AM
🌇 Sunset: 07:30 PM
🌙 Waning Crescent
🌑 Moon: 8% lit
Thu, Apr 16
Patchy rain nearby
27°
/
11°
🌧️ 78% chance of rain
💧 Avg. humidity: 78%
💨 Max wind: 20.5 km/h
🌧️ Total precip: 0.43 mm
☀️ UV Index: 1.5
🌅 Sunrise: 06:08 AM
🌇 Sunset: 07:31 PM
🌙 Waning Crescent
🌑 Moon: 3% lit
Fri, Apr 17
Moderate rain
23°
/
12°
🌧️ 89% chance of rain
💧 Avg. humidity: 83%
💨 Max wind: 16.2 km/h
🌧️ Total precip: 9.75 mm
☀️ UV Index: 1.1
🌅 Sunrise: 06:06 AM
🌇 Sunset: 07:32 PM
🌙 New Moon
🌑 Moon: 0% lit
Best Time to Visit Old Lyme
Plan your trip to Old Lyme, United States around the most favorable weather conditions.
Peak Season
June – September
Warm, dry summers — ideal for outdoor activities.
Shoulder Season
April – May, October
Fewer crowds, moderate prices, mild weather.
Off Season
November – March
Cooler temperatures; some regions may experience rain or snow.
Frequently Asked Questions
What is the current weather in Old Lyme?
Current conditions in Old Lyme: Sunny, temperature 22°C, humidity 66%.
What is the best time to visit Old Lyme?
The best time to visit Old Lyme is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Old Lyme?
Old Lyme is located at approximately 41.3° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Old Lyme?
The wettest period in Old Lyme is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Old Lyme?
For visits to Old Lyme during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What country is Old Lyme in?
Old Lyme is located in United States, in the state of Connecticut.
What are the public holidays in Old Lyme in 2026?
View the 2026 public holidays for Old Lyme on our Holidays page.
What are the GPS coordinates used for the weather forecast in Old Lyme?
The weather forecast for Old Lyme uses coordinates 41.3163, -72.3296.