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WeatherLive › Massachusetts › South Dennis

South Dennis, MA Weather (02660)

Today Hourly 10-Day Weekend Monthly Radar Air Quality Climate
Current WeatherSouth Dennis · 3:34 PM EDT
79° | 72°
79°F
Feels like 83°
Mostly cloudy
WindSW 7 mph · Gusts 11 mph
Precip26% · –
Humidity80% · Dew point 72°
UV index7 High
Air Quality46 Good
Pressure29.94 inHg
Visibility6 mi
Sunrise / Sunset6:02 AM · 7:21 PM · 13h 19m

Weather map — South Dennis

Full radar →
Now
79°
23%
7 mph
16:00
78°
25%
9 mph
17:00
76°
25%
9 mph
18:00
76°
27%
9 mph
19:00
75°
28%
8 mph
20:00
73°
29%
8 mph
21:00
73°
27%
7 mph
22:00
73°
30%
7 mph
23:00
74°
30%
7 mph
00:00
74°
25%
12 mph
01:00
71°
22%
13 mph
02:00
69°
24%
16 mph
03:00
68°
26%
15 mph
04:00
68°
25%
15 mph
05:00
67°
23%
15 mph
06:00
67°
8%
13 mph
07:00
66°
8%
11 mph
08:00
67°
9%
11 mph
09:00
68°
10%
10 mph
10:00
69°
16%
11 mph
11:00
69°
15%
10 mph
12:00
69°
15%
9 mph
13:00
69°
5%
9 mph
14:00
69°
13%
9 mph

Today · Fri 8/28

High 79°
26% / –

Mostly cloudy. Winds S at 10 mph.

Tonight · Fri 8/28

Low 66°
27% / –

Mostly cloudy. Winds SW at 7 mph.

Tomorrow · Sat 8/29

74° | 65°
14% / –

Mostly cloudy. Winds N at 16 mph.

7-day trend

South Dennis · temperature + precipitation

10-day forecast

Updated 3:34 PM

Details & indices

Wind
7 mph SW
Gusts 11 mph
Humidity
80%
Dew point 72°
Pressure
29.94 inHg
Rising
UV index
7 — High
High today
Air Quality
Good
AQI 46 · US EPA
Allergy
None detected
—
Visibility
6 mi
Clear view
Allergy — South Dennis

🌿 Conditions right now

View all →
Birch
None
Grass
None
Oak
None
Alder
None
Hazel
None
Mugwort
None
Ragweed
None

Sun & moon

Sunrise6:02 AM
Sunset7:21 PM
Length of day13h 19m
Moonrise7:32 PM
Moonset6:23 AM
Moon phase🌕 Full Moon · 100%
Next full moonSep 26 Harvest Moon
Latitude41.6896°N
Longitude-70.1564°E

Water temps nearby

View all →
Race Point, Cape Cod (27 mi)72°
Surfside, Nantucket (31 mi)72°
🌤️No rain expected in the next 90 minutes
Now+30+60+90 min
Minute-by-minute precip · HRRR nowcast

Daily planner

computed from today's forecast
Laundry day
Fair
Line-drying weather
Grilling
Great
Fire up the grill
Running
Poor
Lace up outside
Patio
Great
Dinner outdoors
Nearby places in {{REGION}}
Boston
Mostly cloudy
85°
Worcester
Mostly cloudy
84° 🌤️
Springfield
—
—
Data sources · Friday, August 28
Where the South Dennis forecast comes from
This page blends NOAA/NWS model guidance with global ensembles for the 10-day outlook, air quality and alerts. Data refreshes every hour, current conditions every 15 minutes. Coordinates: 41.6896°N, -70.1564°.
NBM + global weather models
Updated: 3:34 PM
Weather in South Dennis
Over the next 10 days South Dennis tops out around 80° (Sunday) and dips to 63° on the coolest night (Tuesday). About 1.9 in of precipitation is expected in total; the most likely wet day is Thursday (93% chance). Wind is the one to watch: gusts to 31 mph around Friday. The NWS alert board for this area is currently clear. Right now South Dennis is about 6° cooler than nearby Boston. Longer view: classic Northeast mix — nor'easters, humid spells and a glorious fall.
South Dennis, MA · Elev 33 ft · 41.69°N, 70.16°W · Massachusetts · Forecast computed for these exact coordinates
Powered by NWS/NOAA guidance, multi-model forecasts and official environmental feeds · NOAA/NWS · EPA AirNow · MET Norway · global models
Updated: 3:34 PM