Westbrook, ME Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Westbrook, a city in Cumberland County, Maine.
Tonight
46°F
Chance Rain Showers then Mostly Cloudy
A chance of rain showers before 10pm. Mostly cloudy, with a low around 46. South wind 0 to 5 mph. Chance of precipitation is 30%.
7-day forecast for Westbrook
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 46°F | Chance Rain Showers then Mostly Cloudy | 0 to 5 mph S | 26% |
| Wednesday | 75°F | Mostly Sunny | 0 to 10 mph SW | 6% |
| Wednesday Night | 53°F | Partly Cloudy | 5 mph SW | 3% |
| Thursday | 72°F | Partly Sunny then Isolated Rain Showers | 5 to 10 mph SW | 17% |
| Thursday Night | 58°F | Mostly Cloudy then Isolated Rain Showers | 5 to 10 mph SW | 17% |
| Friday | 69°F | Light Rain Likely | 5 mph S | 65% |
| Friday Night | 51°F | Light Rain | 0 to 5 mph NE | 85% |
| Saturday | 61°F | Light Rain | 5 to 10 mph N | 75% |
| Saturday Night | 41°F | Light Rain Likely | 5 mph NW | 55% |
| Sunday | 59°F | Chance Light Rain | 5 to 10 mph W | 33% |
| Sunday Night | 34°F | Slight Chance Light Rain then Partly Cloudy | 5 mph W | 16% |
| Monday | 56°F | Slight Chance Light Rain | 5 to 15 mph W | 22% |
| Monday Night | 32°F | Slight Chance Light Rain | 5 to 10 mph W | 21% |
| Tuesday | 56°F | Slight Chance Light Rain then Mostly Sunny | 10 to 15 mph W | 17% |
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 Nov 4, 2026.