Mountain Brook, AL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mountain Brook, a city in Jefferson County, Alabama.
This Afternoon
76°F
Slight Chance Rain Showers
A slight chance of rain showers after 3pm. Mostly cloudy, with a high near 76. Southeast wind around 15 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Mountain Brook
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 76°F | Slight Chance Rain Showers | 15 mph SE | 23% |
| Tonight | 64°F | Showers And Thunderstorms | 10 to 15 mph SE | 83% |
| Wednesday | 75°F | Showers And Thunderstorms | 5 to 10 mph S | 87% |
| Wednesday Night | 57°F | Slight Chance Rain Showers then Partly Cloudy | 0 mph | 15% |
| Thursday | 74°F | Mostly Sunny | 0 to 5 mph W | 7% |
| Thursday Night | 53°F | Partly Cloudy | 0 mph | 3% |
| Friday | 73°F | Mostly Sunny | 0 to 10 mph NW | 4% |
| Friday Night | 47°F | Mostly Clear | 5 mph N | 0% |
| Saturday | 65°F | Mostly Sunny | 5 to 10 mph N | 0% |
| Saturday Night | 41°F | Partly Cloudy | 5 mph N | 3% |
| Sunday | 64°F | Mostly Sunny | 5 to 10 mph N | 7% |
| Sunday Night | 40°F | Mostly Clear | 5 mph N | 5% |
| Monday | 65°F | Sunny | 5 to 10 mph NW | 2% |
| Monday Night | 40°F | Mostly Clear | 0 to 5 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 Nov 3, 2026.