South Dennis, MA Weather Forecast for 5-Days

Updated: Mon Feb 16th 2026 10:15 PM EST

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South Dennis, MA Weather – 2-16 – Partly Cloudy
37° / 25°
Partly Cloudy
Daytime highs will reach 37°F with lows dropping to 25°F in South Dennis, where skies will be cloudy. Wind will be moderate, blowing around 13mph on average and gusts of 11.6mph at 11 PM. The humidity will be on the higher side, averaging about 79%, the maximum being 89% at 11 PM and 89% being its lowest at 11 PM. Barometric pressure is its highest of 30.13inHg at 11 PM, a lowest point of 30.13inHg at 11 PM with an avg 30.13inHg.
South Dennis, MA Weather – 2-17 – Overcast
34° / 30°

Weather Tomorrow

Overcast
Daytime highs will reach 34°F with lows dropping to 30°F in South Dennis, where skies will be overcast. Snow is likely with a 3% chance. Wind will be moderate, blowing around 11mph on average and gusts of 18.5mph at 10 PM. High humidity with average of 92% is anticipated, the maximum being 98% at 11 PM and 83% being its lowest at 11 AM. Barometric pressure is its highest of 30.15inHg at 10 AM, a lowest point of 30.04inHg at 5 PM with an avg 30.1inHg.
South Dennis, MA Weather – 2-18 – Moderate Or Heavy Snow Showers
35° / 31°
Moderate Or Heavy Snow Showers
South Dennis could see moderate Or Heavy Snow Showers with daytime highs of 35°F and nighttime lows near 31°F. Rainfall predicted to have a 68% chance with an estimated 0.47in. Snow is likely with a 28% chance with an estimated 0.7in. Wind will be moderate, blowing around 13mph on average and gusts of 21.8mph at 5 AM. High humidity with average of 97% is anticipated, the maximum being 99% at 11 PM and 93% being its lowest at 2 PM. Barometric pressure is its highest of 30.04inHg at 12 AM, a lowest point of 29.75inHg at 10 PM with an avg 29.9inHg.
South Dennis, MA Weather – 2-19 – Moderate Or Heavy Snow Showers
36° / 32°
Moderate Or Heavy Snow Showers
South Dennis may see moderate Or Heavy Snow Showers, with daytime highs of 36°F and overnight lows near 32°F. Rainfall predicted to have a 73% chance with an estimated 0.52in. Snow is likely with a 19% chance with an estimated 3.7in. Wind will be moderate, blowing around 13mph on average and gusts of 18.6mph at 1 AM. High humidity with average of 84% is anticipated, the maximum being 97% at 12 AM and 75% being its lowest at 2 PM. Barometric pressure is its highest of 30.04inHg at 10 PM, a lowest point of 29.78inHg at 12 AM with an avg 29.96inHg.
South Dennis, MA Weather – 2-20 – Moderate Rain
37° / 30°
Moderate Rain
Rain showers are in the forecast for South Dennis, with a high of 37°F and a low of 30°F. Rainfall predicted to have a 67% chance with an estimated 0.38in. Wind will be moderate, blowing around 18mph on average and gusts of 28.6mph at 7 PM. High humidity with average of 88% is anticipated, the maximum being 100% at 10 PM and 76% being its lowest at 10 AM. Barometric pressure is its highest of 30.04inHg at 3 AM, a lowest point of 29.59inHg at 10 PM with an avg 29.87inHg.
South Dennis, MA Weather – 2-21 – Light Snow
34° / 31°
Light Snow
Light Snow is in the forecast for South Dennis, with a high of 34°F and a low of 31°F. The chance of rain is 77% with an estimated 0.04in. Snow is likely with a 40% chance with an estimated 0.1in. Winds will be strong at speeds peaking at 22mph and gusts of 33.8mph at 1 AM. High humidity with average of 95% is anticipated, the maximum being 99% at 12 AM and 84% being its lowest at 11 PM. Barometric pressure is its highest of 30.07inHg at 10 PM, a lowest point of 29.66inHg at 1 AM with an avg 29.9inHg.

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