Marine Weather Net

Chatham, MA Weather Forecast


Marine Forecast: Nantucket Sound


Chatham, Massachusetts

 Lat: 41.68N, Lon: 69.96W

Current Conditions Updated: 331 AM EST MON FEB 23 2026

Light Snow
Temp: 33°F
  • Humidity:
  • 95%
  • Winds:
  • 26 MPH NE
  • Gusts:
  • 53 MPH
  • Barometer:
  • 29.43 in.
  • Dewpoint:
  • 32°F
  • Heat index:
  • 33°F

  • Sunrise:
  • 6:25 AM EST
  • Sunset:
  • 5:19 PM EST
  • Moonrise:
  • 9:12 AM EST
  • Moonset:
  • N/A EST

TONIGHT

BLOWING SNOW
Lo: 30°F
Precip: 100%

MONDAY

BLOWING SNOW
Lo: 24°F
Precip: 100%

TUESDAY

MOSTLY SUNNY
Hi: 31°F
Lo: 18°F

WEDNESDAY

RAIN AND SNOW
Hi: 39°F
Lo: 29°F
Precip: 90%
Weather Forecast In Detail:
Forecast Issued: 104 AM EST Mon Feb 23 2026

BLIZZARD WARNING IN EFFECT UNTIL 7 AM EST TUESDAY ...COASTAL FLOOD WARNING IN EFFECT UNTIL 7 AM EST THIS MORNING... ...COASTAL FLOOD WATCH IN EFFECT FROM 1 PM EST THIS AFTERNOON THROUGH THIS EVENING...
Rest Of Tonight...Snow. Areas of blowing snow. Snow May be heavy at Times. Visibility one quarter mile or less at Times. Snow accumulation of 4 to 8 inches. Very windy. Near steady temperature around 30. Northeast winds 30 to 40 mph with gusts up to 65 mph. Chance of snow near 100 percent.
Monday...Snow. Areas of blowing snow. Snow May be heavy at Times in the morning. Visibility one quarter mile or less at Times. Additional snow accumulation of 10 to 14 inches. Strong winds with highs in the mid 30s. Northeast winds 35 to 45 mph with gusts up to 75 mph. Chance of snow near 100 percent.
Monday Night...Mostly cloudy. Snow in the evening. Areas of blowing snow in the evening. Total snow accumulation of 18 to 24 inches. Very windy with lows in the lower 20s. Northwest winds 25 to 35 mph with gusts up to 60 mph, diminishing to 20 to 25 mph with gusts up to 40 mph after midnight. Chance of snow 90 percent.
Tuesday...Mostly sunny. Highs in the lower 30s. Northwest winds 10 to 15 mph. Gusts up to 30 mph, Decreasing to 20 mph in the afternoon.
Tuesday Night...Partly cloudy. Lows around 18. West winds 5 to 10 mph.
Wednesday...Rain and snow. Highs in the upper 30s. Chance of precipitation 90 percent.
Wednesday Night...Partly cloudy with a 50 percent chance of rain. Not as cool with lows in the upper 20s.
Thursday...Partly sunny with a 30 percent chance of snow. Highs in the upper 30s.
Thursday Night...Rain likely with a chance of snow. Lows around 30. Chance of precipitation 70 percent.
Friday...Rain likely. Highs in the lower 40s. Chance of rain 60 percent.
Friday Night...Partly cloudy. Lows around 30. Highs in the lower 40s.
Saturday...Partly cloudy. Lows around 30. Highs in the lower 40s.
Sunday...Partly sunny. Highs around 40.
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