Marine Weather Net

Old Lyme, CT Weather Forecast


Marine Forecast:


Old Lyme, Connecticut

 Lat: 41.32N, Lon: 72.33W

Current Conditions Updated: 803 AM EDT THU JUL 17 2025

Clear


Temp: 77°F
  • Humidity:
  • 93%
  • Winds:
  • 8 MPH SSW
  • Gusts:
  • N/A MPH
  • Barometer:
  • 29.89 in.
  • Dewpoint:
  • 75°F
  • Heat index:
  • 78°F

  • Sunrise:
  • 5:28 AM EDT
  • Sunset:
  • 8:19 PM EDT
  • Moonrise:
  • 11:54 PM EDT
  • Moonset:
  • 12:58 PM EDT

TODAY

PARTLY SUNNY
Hi: 89°F
Lo: 67°F
Precip: 50%

FRIDAY

MOSTLY SUNNY
Hi: 81°F
Lo: 60°F

SATURDAY

MOSTLY SUNNY
Hi: 81°F
Lo: 67°F

SUNDAY

PARTLY SUNNY
Hi: 81°F
Lo: 61°F
Precip: 60%
Weather Forecast In Detail:
Forecast Issued: 610 AM EDT Thu Jul 17 2025

HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM EDT THIS EVENING
Today...Mostly cloudy this morning, then becoming partly sunny. A chance of showers and thunderstorms. Highs in the upper 80s. Southwest winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 50 percent. Heat index values in the upper 90s this afternoon.
Tonight...Mostly clear. Humid with lows in the upper 60s. Southwest winds 10 to 15 mph, becoming west 5 to 10 mph after midnight. Gusts up to 25 mph.
Friday...Mostly sunny. Less humid with highs in the lower 80s. Northwest winds 5 to 10 mph. Gusts up to 25 mph in the morning.
Friday Night...Mostly clear. Lows around 60. North winds around 5 mph.
Saturday...Mostly sunny. Highs in the lower 80s. Northeast winds around 5 mph, becoming southwest in the afternoon.
Saturday Night...Mostly cloudy. A chance of showers in the evening, then showers likely with a chance of thunderstorms after midnight. Lows in the upper 60s. Chance of rain 60 percent.
Sunday...Mostly cloudy with showers likely with a chance of thunderstorms in the morning, then partly sunny with a chance of showers and thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 60 percent.
Sunday Night...Partly cloudy with a chance of showers and thunderstorms in the evening, then mostly clear after midnight. Lows in the lower 60s. Chance of rain 40 percent.
Monday...Sunny. Highs around 80.
Monday Night...Mostly clear. Lows in the upper 50s.
Tuesday...Mostly sunny. Highs around 80.
Tuesday Night...Partly cloudy in the evening, then clearing. Lows in the lower 60s.
Wednesday...Mostly sunny. Highs in the lower 80s.
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