Westbrook, ME Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Westbrook, a city in Cumberland County, Maine.
Today
66°F
Sunny
Sunny, with a high near 66. Northwest wind 0 to 5 mph.
7-day forecast for Westbrook
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 66°F | Sunny | 0 to 5 mph NW | 0% |
| Tonight | 43°F | Partly Cloudy | 0 to 5 mph SW | 0% |
| Sunday | 62°F | Mostly Cloudy then Rain | 0 to 10 mph SE | 79% |
| Sunday Night | 43°F | Rain then Chance Rain Showers | 0 to 10 mph NE | 76% |
| Monday | 66°F | Mostly Sunny | 10 to 15 mph N | 3% |
| Monday Night | 42°F | Mostly Cloudy | 5 mph N | 0% |
| Tuesday | 64°F | Partly Sunny | 5 to 10 mph NE | 0% |
| Tuesday Night | 42°F | Partly Cloudy | 0 to 10 mph NE | 1% |
| Wednesday | 64°F | Mostly Sunny | 10 mph NE | 0% |
| Wednesday Night | 41°F | Partly Cloudy | 0 to 5 mph NE | 4% |
| Thursday | 63°F | Slight Chance Rain Showers | 5 to 10 mph NE | 24% |
| Thursday Night | 42°F | Chance Rain Showers | 5 to 15 mph NE | 33% |
| Friday | 65°F | Chance Rain Showers | 15 to 20 mph N | 32% |
| Friday Night | 43°F | Chance Rain Showers | 10 to 15 mph NE | 31% |
Forecast source: National Weather Service (api.weather.gov) for Westbrook (43.708, -70.353). Updated through the day.
Growing snapshot for Westbrook
Last spring frost
Apr 26
First fall frost
Oct 15
Growing season
170 days
Hardiness zone
5b
More local growing data for Westbrook: nearby ZIP 04092 weather · frost dates · planting calendar · Maine frost dates
Nearby towns & communities
Bridgton
Brunswick
Casco
Cousins Island
Cumberland Center
Dunstan
Falmouth
Falmouth Foreside
Freeport
Gorham
Gray
Little Falls
Littlejohn Island
Naples
North Windham
Oak Hill
Portland
South Portland
South Windham
Standish
Steep Falls
Yarmouth
Climate data from the nearest NOAA station, Portland Intl Jetport, Me (4.8 mi from Westbrook). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.