Marine Weather Net

Old Lyme, CT Weather Forecast


Marine Forecast:


Old Lyme, Connecticut

 Lat: 41.32N, Lon: 72.33W

Current Conditions Updated: 656 AM EDT THU SEP 17 2026

Mostly Cloudy
Temp: 63°F
  • Humidity:
  • 100%
  • Winds:
  • N/A
  • Gusts:
  • N/A MPH
  • Barometer:
  • 30.26 in.
  • Dewpoint:
  • 63°F
  • Heat index:
  • 63°F

  • Sunrise:
  • 6:29 AM EDT
  • Sunset:
  • 6:55 PM EDT
  • Moonrise:
  • 1:33 PM EDT
  • Moonset:
  • 10:10 PM EDT

TODAY

MOSTLY CLOUDY
Hi: 79°F
Lo: 65°F

FRIDAY

PARTLY SUNNY
Hi: 79°F
Lo: 55°F
Precip: 40%

SATURDAY

MOSTLY SUNNY
Hi: 69°F
Lo: 51°F

SUNDAY

SHOWERS
Hi: 65°F
Lo: 51°F
Precip: 90%
Weather Forecast In Detail:
Forecast Issued: 157 AM EDT Thu Sep 17 2026

Today...Patchy fog this morning. Mostly cloudy. Highs in the upper 70s. South winds 5 to 10 mph.
Tonight...Mostly cloudy with a 50 percent chance of showers. Lows in the mid 60s. Southwest winds around 5 mph.
Friday...Partly sunny. A chance of showers in the morning. Highs in the upper 70s. North winds 5 to 10 mph. Gusts up to 20 mph in the morning. Chance of rain 40 percent.
Friday Night...Partly cloudy. Cooler. Less humid with lows around 50. North winds around 5 mph.
Saturday...Mostly sunny. Highs in the upper 60s. Northeast winds around 5 mph, becoming east around 5 mph in the afternoon.
Saturday Night...Partly cloudy in the evening, then becoming mostly cloudy. Lows in the lower 50s.
Sunday...Showers. Highs in the mid 60s. Chance of rain 90 percent.
Sunday Night...Showers. Lows in the lower 50s. Chance of rain 90 percent.
Monday...Partly sunny. A chance of showers in the morning. Highs in the mid 60s. Chance of rain 30 percent.
Monday Night...Partly cloudy in the evening, then becoming mostly cloudy. Lows in the upper 40s.
Tuesday...Mostly sunny. Highs in the mid 60s.
Tuesday Night...Partly cloudy. Lows in the upper 40s.
Wednesday...Mostly sunny. Highs in the mid 60s.
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