Mountain Brook, AL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mountain Brook, a city in Jefferson County, Alabama.
Overnight
73°F
Mostly Clear
Mostly clear, with a low around 73. Wind around 0 mph.
7-day forecast for Mountain Brook
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 73°F | Mostly Clear | 0 mph | 3% |
| Saturday | 96°F | Sunny | 0 to 5 mph NE | 14% |
| Saturday Night | 72°F | Mostly Clear | 0 mph | 14% |
| Sunday | 94°F | Sunny then Slight Chance Showers And Thunderstorms | 0 mph | 20% |
| Sunday Night | 72°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 0 mph | 20% |
| Monday | 94°F | Sunny then Chance Showers And Thunderstorms | 0 mph | 28% |
| Monday Night | 71°F | Chance Showers And Thunderstorms | 0 mph | 53% |
| Tuesday | 91°F | Chance Showers And Thunderstorms | 0 to 5 mph NE | 38% |
| Tuesday Night | 70°F | Chance Showers And Thunderstorms | 5 mph NE | 32% |
| Wednesday | 89°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 to 10 mph NE | 23% |
| Wednesday Night | 66°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 5 to 10 mph NE | 23% |
| Thursday | 85°F | Sunny | 5 to 10 mph N | 5% |
| Thursday Night | 63°F | Mostly Clear | 5 to 10 mph N | 5% |
| Friday | 85°F | Sunny | 5 to 10 mph N | 2% |
Forecast source: National Weather Service (api.weather.gov) for Mountain Brook (33.491, -86.734). Updated through the day.
Growing snapshot for Mountain Brook
Last spring frost
Mar 21
First fall frost
Nov 11
Growing season
236 days
Hardiness zone
8b
More local growing data for Mountain Brook: nearby ZIP 35223 weather · frost dates · planting calendar · Alabama frost dates
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Climate data from the nearest NOAA station, Birmingham Ap, Al (5.2 mi from Mountain Brook). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.