New York, NY 72° Los Angeles, CA 64° Chicago, IL 65° Houston, TX 76° 🌤️ Miami, FL Phoenix, AZ 84° 🌤️ Seattle, WA Denver, CO 52° 🌤️ Toronto, ON 🌤️ Vancouver, BC
WeatherLiveMassachusettsDennis

Dennis, MA Weather (02638)

Current WeatherDennis · 10:02 AM EDT
72° | 35°
69°F
Feels like 68°
Light rain
WindNW 9 mph · Gusts 17 mph
Precip80% · 0.65 in
Humidity81% · Dew point 63°
UV index3 Low
Air Quality41 Good
Pressure30.27 inHg
Visibility6 mi
Sunrise / Sunset5:51 AM · 7:38 PM · 13h 47m

Weather map — Dennis

Full radar →
Now
69°
0.06 in
9 mph
11:00
71°
0.06 in
12 mph
12:00
72°
0.06 in
14 mph
13:00
72°
0.06 in
16 mph
14:00
72°
0.07 in
17 mph
15:00
72°
0.10 in
16 mph
16:00
42°
3%
14 mph
17:00
41°
3%
10 mph
18:00
38°
7%
7 mph
19:00
36°
7%
6 mph
20:00
36°
8%
6 mph
21:00
35°
8%
7 mph
22:00
35°
15%
7 mph
23:00
35°
8%
6 mph
00:00
35°
21%
7 mph
01:00
35°
8%
7 mph
02:00
34°
12%
7 mph
03:00
34°
25%
7 mph
04:00
34°
12%
5 mph
05:00
34°
14%
6 mph
06:00
34°
15%
6 mph
07:00
34°
9%
5 mph
08:00
35°
11%
5 mph
09:00
39°
5%
5 mph

Today · Mon 8/17

High 72°
80% / 0.65 in

Light rain. Winds NW at 17 mph.

Tonight · Mon 8/17

Low 34°
8% / –

Sunny. Winds N at 7 mph.

Tomorrow · Tue 8/18

51° | 34°
7% / –

Mostly cloudy. Winds N at 7 mph.

7-day trend

Dennis · temperature + precipitation

10-day forecast

Updated 10:02 AM

Details & indices

Wind
9 mph NW
Gusts 17 mph
Humidity
81%
Dew point 63°
Pressure
30.27 inHg
Rising
UV index
3 — Low
High today
Air Quality
Good
AQI 41 · US EPA
Allergy
None detected
Visibility
6 mi
Clear view
Allergy — Dennis

🌿 Conditions right now

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

Sun & moon

Sunrise5:51 AM
Sunset7:38 PM
Length of day13h 47m
Moonrise11:22 AM
Moonset9:45 PM
Next full moonAug 28 Sturgeon Moon
Latitude41.7354°N
Longitude-70.1939°E

Water temps nearby

View all →
Race Point, Cape Cod (24 mi)70°
Surfside, Nantucket (34 mi)70°
🌤️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
Poor
Line-drying weather
Grilling
Poor
Fire up the grill
Running
Poor
Lace up outside
Patio
Fair
Dinner outdoors
Nearby places in {{REGION}}
🌤️
Boston
🌤️
Worcester
🌤️
Springfield
Data sources · Monday, August 17
Where the 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: 41.7354°N, -70.1939°.
NBM + global weather models
Updated: 10:02 AM
Weather in Dennis
Dennis's outlook: warmest day near 72° (Monday), coldest night about 29° (Monday). Models drop roughly 0.82 in of precipitation across the stretch — watch Monday (80%). Hold onto the patio furniture Wednesday: gusts could hit 38 mph. No watches or warnings are active for the area right now. Longer view: classic Northeast mix — nor'easters, humid spells and a glorious fall.
Dennis, MA · Elev 16 ft · 41.74°N, 70.19°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: 10:02 AM