Marine Weather Net

Old Lyme, CT Weather Forecast


Marine Forecast:


Old Lyme, Connecticut

 Lat: 41.32N, Lon: 72.33W

Current Conditions Updated: 1256 PM EDT SUN JUL 5 2026

Clear


Temp: 77°F
  • Humidity:
  • 64%
  • Winds:
  • 8 MPH ESE
  • Gusts:
  • N/A MPH
  • Barometer:
  • 30.01 in.
  • Dewpoint:
  • 64°F
  • Heat index:
  • 79°F

  • Sunrise:
  • 5:20 AM EDT
  • Sunset:
  • 8:24 PM EDT
  • Moonrise:
  • 11:58 PM EDT
  • Moonset:
  • 10:50 AM EDT

TODAY

PARTLY SUNNY
Hi: 81°F
Lo: 61°F
Precip: 40%

MONDAY

CHANCE OF T-STORM
Hi: 71°F
Lo: 60°F
Precip: 90%

TUESDAY

CHANCE OF T-STORM
Hi: 75°F
Lo: 59°F
Precip: 70%

WEDNESDAY

PARTLY SUNNY
Hi: 81°F
Lo: 65°F
Weather Forecast In Detail:
Forecast Issued: 356 AM EDT Sun Jul 05 2026

FLOOD WATCH IN EFFECT FROM NOON EDT TODAY THROUGH LATE MONDAY NIGHT
Today...Mostly cloudy with a chance of showers this morning, then partly sunny with a slight chance of showers and thunderstorms this afternoon. Some thunderstorms May produce heavy rainfall this afternoon. Highs in the lower 80s. East winds around 5 mph. Chance of rain 40 percent.
Tonight...Mostly cloudy. A chance of showers and thunderstorms in the evening, then showers with a chance of thunderstorms after midnight. Some thunderstorms May produce heavy rainfall. Lows in the lower 60s. East winds around 5 mph. Chance of rain 90 percent.
Monday...Showers with a slight chance of thunderstorms. Some thunderstorms May produce heavy rainfall. Highs in the lower 70s. East winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 90 percent.
Monday Night...Showers with a slight chance of thunderstorms. Some thunderstorms May produce heavy rainfall. Lows around 60. East winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 90 percent.
Tuesday...Showers likely with a slight chance of thunderstorms. Highs in the mid 70s. Northeast winds around 10 mph with gusts up to 20 mph. Chance of rain 70 percent.
Tuesday Night...Mostly cloudy. A chance of showers in the evening. Lows in the upper 50s. Chance of rain 40 percent.
Wednesday...Partly sunny. Highs in the lower 80s.
Wednesday Night...Partly cloudy. Lows in the mid 60s.
Thursday...Mostly sunny. Highs in the upper 80s.
Thursday Night...Partly cloudy in the evening, then becoming mostly cloudy. A 30 percent chance of showers. Lows in the upper 60s.
Friday...Partly sunny. A chance of showers in the morning, then a chance of showers and thunderstorms in the afternoon. Highs around 90. Chance of rain 50 percent. Heat index values up to 100.
Friday Night...Mostly cloudy. A chance of showers and thunderstorms in the evening, then a chance of showers after midnight. Lows in the upper 60s. Chance of rain 50 percent.
Saturday...Partly sunny. A chance of showers. Highs in the upper 80s. Chance of rain 50 percent.
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