FORECAST CITY
Sign in
Shaded-relief atlas plate of Chatham, Massachusetts: rivers, roads, the city limits and where the water drains.
MASSACHUSETTS · BARNSTABLE COUNTY

Chatham

1,551 people, 40 ft above sea level in Barnstable County.

40 ftElevation, city center
1,551People, 2024 estimate
3 sq miLand area
Sunny 61°
Sunny now Dew point 57° · N 5 mph · high 61°
City of Chatham River Interstate 2 miles
Explore the plate Order a print

The Chatham 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 Chatham

NWS forecast and National Blend of Models · updated 2:00 PM EDT
RIGHT NOW Chatham Municipal Airport (KCQX) · 2:52 PM
Sunny
61° Sunny Feels like 61° · high of 61° near 3 PM
WindN 5 mphno gusts
Humidity87%rising to 100% by morning
Pressure29.94 in →steady
Visibility10 mihaze-free
CloudsClear
UV index—no forecast
Dew point 57° · Comfortableabout the same for three days
DryComfortableStickyMuggyOppressive
NEXT RAIN
Showers
Friday50% chance · showers
LIKELY AMOUNT—amounts come within 3 days
LAST RAINSept. 270.35 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
↑ 6:34 AM6:25 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
partly cloudy day
partly cloudy night
partly cloudy night
partly cloudy night
partly cloudy night
partly cloudy day
partly cloudy day
partly cloudy day
TEMPERATURE °F
61°
57°
63°
57°
68°
61°
CHANCE OF RAIN
50%
WIND, MPH
5
0
0
0
0
0
0
3
3
1
2
3
4
5
7
10
10
10
8
8
8
8
9
11
HOW IT FEELS · DEW POINT
Comfortable: dew points 55 to 61°

The next seven days, and how sure we are

Forecast, with the range 8 in 10 ensemble members agree on Normal, about 67° / 53°
TUE Sept. 29 Mostly cloudy Mostly cloudy
61° 56°
0% rain — NW 5 A
WED Sept. 30 Partly cloudy Partly cloudy
63° 57°
0% rain — SE 2 A
THU Oct. 1 Partly cloudy Partly cloudy
68° 61°
0% rain — SW 8 A
FRI Oct. 2 Chance of showers Chance of showers
69° 58°
50% rain up to 0.08″ SW 9 A
SAT Oct. 3 Partly cloudy Partly cloudy
63° 55°
20% rain — NE 3 B
SUN Oct. 4 Chance of showers Chance of showers
61° 54°
50% rain up to 1.3″ E 6 C
MON Oct. 5 Mostly sunny Mostly sunny
61° 50°
20% rain — NW 6 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 Chatham about 5,000 feet above the ground was over New England three days ago, about 1,370 miles back along its path. The nine paths traced from around the city fan out, so treat that as a best guess. Near the ground the air came from a point about 590 miles to the northeast; 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 Chatham on the Forecast Network

Neighboring plates

Barnstable Town MA · 20 MI 20 miles west Plymouth MA · 37 MI 37 miles northwest Boston MA · 71 MI 71 miles northwest Providence RI · 76 MI 76 miles west Worcester MA · 103 MI 103 miles northwest Brookhaven NY · 166 MI 166 miles west
FORECASTCITY
Atlas plate of Chatham, Massachusetts. Explore the plate
MASSACHUSETTS · BARNSTABLE

Chatham

1,551 people, 40 ft above sea level in Barnstable County.

40 ftElevation
1,551People
3 sq miLand
Sunny 61°
SunnyDew point 57°
1

Today in Chatham

NEXT 15 HOURS
Now mostly cloudy day 61° 1%
6p mostly cloudy night 60° 2%
9p mostly cloudy night 57° 2%
12a mostly cloudy night 57° 2%
3a partly cloudy night 57° 1%
6a mostly cloudy night 57° 2%
Showers
NEXT RAINFriday · 50%
→
Tue0%
Mostly cloudy Mostly cloudy
56
61
A
Wed0%
Partly cloudy Partly cloudy
57
63
A
Thu0%
Partly cloudy Partly cloudy
61
68
A
Fri50%
Chance of showers Chance of showers
58
69
A
Sat20%
Partly cloudy Partly cloudy
55
63
B
Sun50%
Chance of showers Chance of showers
54
61
C
Mon20%
Mostly sunny Mostly sunny
50
61
B
Letters show how sure the forecast is: A, models agree; B, some spread; C, check back. Sample data.
·