Westbrook, ME Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Westbrook, a city in Cumberland County, Maine.
This Afternoon
63°F
Isolated Rain Showers
Isolated rain showers after 5pm. Cloudy. High near 63, with temperatures falling to around 56 in the afternoon. East wind around 5 mph. Chance of precipitation is 20%.
7-day forecast for Westbrook
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 63°F | Isolated Rain Showers | 5 mph E | 15% |
| Tonight | 46°F | Slight Chance Light Rain then Mostly Cloudy | 0 to 5 mph N | 17% |
| Wednesday | 75°F | Mostly Sunny | 0 to 5 mph SW | 6% |
| Wednesday Night | 51°F | Partly Cloudy | 5 mph SW | 1% |
| Thursday | 72°F | Partly Sunny then Slight Chance Light Rain | 5 to 10 mph SW | 20% |
| Thursday Night | 55°F | Slight Chance Light Rain | 5 to 10 mph SW | 18% |
| Friday | 69°F | Light Rain Likely | 5 mph S | 65% |
| Friday Night | 48°F | Light Rain | 0 to 10 mph E | 81% |
| Saturday | 61°F | Light Rain Likely | 5 to 10 mph NE | 74% |
| Saturday Night | 41°F | Chance Light Rain | 5 mph N | 53% |
| Sunday | 59°F | Chance Light Rain | 5 mph NW | 37% |
| Sunday Night | 37°F | Slight Chance Light Rain then Partly Cloudy | 0 to 5 mph NW | 15% |
| Monday | 57°F | Chance Light Rain | 5 mph NW | 32% |
| Monday Night | 35°F | Chance Light Rain | 5 to 10 mph NW | 34% |
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 3, 2026.