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Shaded-relief atlas plate of Dennis, Massachusetts: rivers, roads, the city limits and where the water drains.
MASSACHUSETTS · BARNSTABLE COUNTY

Dennis

2,399 people, 0 ft above sea level in Barnstable County.

0 ftElevation, city center
2,399People, 2024 estimate
5 sq miLand area
Sunny 62°
Sunny now Dew point 58° · N 8 mph · high 63°
City of Dennis River Interstate 2 miles
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The Dennis plate. Relief from Copernicus GLO-30; rivers and lakes from USGS NHD; watersheds from the USGS Watershed Boundary Dataset; roads and city limits from Census TIGER 2024.

MILE1
TODAY

Today in Dennis

NWS forecast and National Blend of Models · updated 2:00 PM EDT
RIGHT NOW Barnstable Municipal-Boardman Airport (KHYA) · 2:56 PM
Sunny
62° Sunny Feels like 62° · high of 63° near 3 PM
WindN 8 mphno gusts
Humidity86%rising to 100% by morning
Pressure29.93 in →steady
Visibility10 mihaze-free
CloudsClear
UV index—no forecast
Dew point 58° · Comfortableabout the same for three days
DryComfortableStickyMuggyOppressive
NEXT RAIN
Showers
Friday40% chance · showers
LIKELY AMOUNT—amounts come within 3 days
LAST RAINSept. 270.68 in · 2 dry days
ALERTS & OUTLOOKS
No watches or warnings for Barnstable County
NWS Norton and the Storm Prediction Center · checked 3:17 PM
SUN & MOON
↑ 6:35 AM6:26 PM ↓
11 h 51 m of daylight, 3 minutes less than yesterday
Waning gibbous, 89% lit. The Harvest Moon was full Saturday.
AIR & POLLEN
19
GOODAir quality index · ozone
Tomorrow: None, good. No pollen source yet.

The next three days, hour by hour

Sky: clear, cloudy, night Rain likely National Blend of Models
TUESDAY, SEPT. 29
WEDNESDAY, SEPT. 30
THURSDAY, OCT. 1
FRIDAY, OCT. 2
3p
6p
9p
Mid
3a
6a
9a
Noon
3p
6p
9p
Mid
3a
6a
9a
Noon
3p
6p
9p
Mid
3a
6a
9a
Noon
mostly cloudy day
mostly cloudy night
mostly cloudy night
mostly cloudy night
partly cloudy night
partly cloudy day
partly cloudy day
partly cloudy day
partly cloudy day
partly cloudy night
partly cloudy night
partly cloudy night
mostly cloudy night
partly cloudy day
partly cloudy day
partly cloudy day
mostly sunny
partly cloudy night
partly cloudy night
partly cloudy night
partly cloudy night
partly cloudy day
partly cloudy day
mostly sunny
TEMPERATURE °F
63°
57°
64°
57°
70°
62°
CHANCE OF RAIN
50%
WIND, MPH
3
0
0
0
0
0
0
5
5
4
3
4
5
7
9
12
13
12
11
10
9
9
11
13
HOW IT FEELS · DEW POINT
Comfortable: dew points 56 to 63°

The next seven days, and how sure we are

Forecast, with the range 8 in 10 ensemble members agree on Normal, about 69° / 51°
TUE Sept. 29 Mostly cloudy Mostly cloudy
63° 54°
0% rain — NW 4 A
WED Sept. 30 Partly cloudy Partly cloudy
65° 54°
0% rain — SSW 3 A
THU Oct. 1 Partly cloudy Partly cloudy
70° 59°
0% rain — SW 11 A
FRI Oct. 2 Chance of showers Chance of showers
72° 56°
40% rain up to 0.07″ SW 13 A
SAT Oct. 3 Partly cloudy; cooler Partly cloudy; cooler
64° 51°
20% rain — ENE 5 B
SUN Oct. 4 Chance of showers Chance of showers
62° 51°
50% rain up to 1.2″ ESE 7 C
MON Oct. 5 Mostly sunny Mostly sunny
62° 47°
20% rain — NW 9 B
How sure are we? AModels agree: highs within 4° BSome spread: within 8° CWide spread: check back
Range from the National Blend of Models percentiles · graded on Forecast Scores
AIR MAIL

Where today’s air came from

The air arriving over Dennis about 5,000 feet above the ground was over the Atlantic off the Carolinas three days ago, and over the western Atlantic a day ago, about 1,070 miles back along its path. The nine paths traced from around the city fan out, so treat that as a best guess. It rose from near the ground on the way. Near the ground the air came from Canada; at 10,000 feet, from the western Atlantic. Traced back 72 hours through NOAA’s hourly RAP analyses and the GFS beyond them, nine paths at each of three heights.

MILE7
ON THE NETWORK

Around Dennis on the Forecast Network

Neighboring plates

Plymouth MA · 24 MI 24 miles northwest New Bedford MA · 39 MI 39 miles west Boston MA · 60 MI 60 miles northwest Providence RI · 63 MI 63 miles west Worcester MA · 91 MI 91 miles northwest Brookhaven NY · 156 MI 156 miles southwest
FORECASTCITY
Atlas plate of Dennis, Massachusetts. Explore the plate
MASSACHUSETTS · BARNSTABLE

Dennis

2,399 people, 0 ft above sea level in Barnstable County.

0 ftElevation
2,399People
5 sq miLand
Sunny 62°
SunnyDew point 58°
1

Today in Dennis

NEXT 15 HOURS
Now mostly cloudy day 63° 1%
6p mostly cloudy night 61° 2%
9p mostly cloudy night 57° 2%
12a mostly cloudy night 57° 2%
3a mostly cloudy night 57° 1%
6a partly cloudy night 57° 2%
Showers
NEXT RAINFriday · 40%
→
Tue0%
Mostly cloudy Mostly cloudy
54
63
A
Wed0%
Partly cloudy Partly cloudy
54
65
A
Thu0%
Partly cloudy Partly cloudy
59
70
A
Fri40%
Chance of showers Chance of showers
56
72
A
Sat20%
Partly cloudy; cooler Partly cloudy; cooler
51
64
B
Sun50%
Chance of showers Chance of showers
51
62
C
Mon20%
Mostly sunny Mostly sunny
47
62
B
Letters show how sure the forecast is: A, models agree; B, some spread; C, check back. Sample data.
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