Marine Weather Net

Lewiston, ME Weather Forecast


Marine Forecast: Casco Bay


Lewiston, Maine

 Lat: 44.10N, Lon: 70.22W

Current Conditions Updated: 856 PM EDT MON JUN 15 2026

Overcast
Temp: 68°F
  • Humidity:
  • 60%
  • Winds:
  • 6 MPH NW
  • Gusts:
  • N/A MPH
  • Barometer:
  • 29.66 in.
  • Dewpoint:
  • 54°F
  • Heat index:
  • 68°F

  • Sunrise:
  • 4:55 AM EDT
  • Sunset:
  • 8:24 PM EDT
  • Moonrise:
  • 4:53 AM EDT
  • Moonset:
  • 9:40 PM EDT

TONIGHT

MOSTLY CLEAR
Lo: 51°F

TUESDAY

MOSTLY SUNNY
Hi: 79°F
Lo: 50°F

WEDNESDAY

PARTLY SUNNY
Hi: 79°F
Lo: 51°F

THURSDAY

CHANCE OF T-STORM
Hi: 70°F
Lo: 57°F
Precip: 90%
Weather Forecast In Detail:
Forecast Issued: 741 PM EDT Mon Jun 15 2026

Tonight...Mostly clear. Lows in the lower 50s. Northwest winds around 10 mph.
Tuesday...Mostly sunny. Highs in the upper 70s. Northwest winds around 10 mph.
Tuesday Night...Mostly clear. Lows around 50. Light and variable winds.
Wednesday...Partly sunny. Highs in the upper 70s. Light and variable winds, becoming south around 10 mph with gusts up to 20 mph in the afternoon.
Wednesday Night...Partly cloudy. Lows in the lower 50s.
Thursday...Showers likely in the morning, then showers with a chance of thunderstorms in the afternoon. Highs around 70. Chance of rain 90 percent.
Thursday Night...Showers with a chance of thunderstorms in the evening, then partly cloudy with a chance of showers after midnight. Lows in the upper 50s. Chance of rain 80 percent.
Juneteenth...Partly sunny. Highs around 80.
Friday Night...Mostly clear. Lows in the upper 50s.
Saturday...Partly sunny. Highs in the upper 70s.
Saturday Night...Partly cloudy. Lows in the mid 50s.
Sunday...Partly sunny. A chance of showers in the afternoon. Highs in the mid 70s. Chance of rain 30 percent.
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