Chatham, MA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Chatham, a community in Barnstable County, Massachusetts.
Overnight
67°F
Mostly Cloudy
Mostly cloudy, with a low around 67. West wind around 8 mph.
7-day forecast for Chatham
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 67°F | Mostly Cloudy | 8 mph W | 0% |
| Tuesday | 75°F | Mostly Sunny | 5 to 9 mph W | 0% |
| Tuesday Night | 68°F | Mostly Cloudy then Slight Chance Rain Showers | 3 to 9 mph S | 17% |
| Wednesday | 75°F | Slight Chance Rain Showers then Mostly Sunny | 3 to 10 mph SE | 19% |
| Wednesday Night | 70°F | Mostly Cloudy | 7 to 10 mph SW | 4% |
| Thursday | 77°F | Mostly Sunny | 7 to 13 mph SW | 4% |
| Thursday Night | 72°F | Partly Cloudy | 12 mph SW | 2% |
| Friday | 78°F | Mostly Sunny | 9 to 14 mph SW | 3% |
| Friday Night | 71°F | Partly Cloudy | 8 to 14 mph SW | 10% |
| Saturday | 78°F | Mostly Sunny | 7 to 12 mph SW | 8% |
| Saturday Night | 71°F | Partly Cloudy then Slight Chance Rain Showers | 7 to 12 mph SW | 15% |
| Sunday | 78°F | Mostly Sunny | 6 to 13 mph SW | 11% |
| Sunday Night | 71°F | Partly Cloudy | 12 mph SW | 11% |
| Monday | 78°F | Mostly Sunny | 8 to 15 mph SW | 11% |
Forecast source: National Weather Service (api.weather.gov) for Chatham (41.674, -69.963). Updated through the day.
Growing snapshot for Chatham
Last spring frost
Apr 13
First fall frost
Nov 4
Growing season
206 days
Hardiness zone
7b
More local growing data for Chatham: nearby ZIP 02633 weather · frost dates · planting calendar · Massachusetts frost dates
Nearby towns & communities
Barnstable Town
Bourne
Brewster
Buzzards Bay
Dennis
Dennis Port
East Dennis
East Falmouth
East Harwich
East Sandwich
Falmouth
Forestdale
Harwich Center
Harwich Port
Mashpee Neck
Monomoscoy Island
Monument Beach
New Seabury
North Eastham
North Falmouth
Northwest Harwich
Orleans
Pocasset
Popponesset
Popponesset Island
Provincetown
Sagamore
Sandwich
Seabrook
Seconsett Island
Climate data from the nearest NOAA station, Chatham Muni Ap, Ma (0.7 mi from Chatham). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.