Decatur, AL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Decatur, a city in Morgan County, Alabama.
Tonight
73°F
Mostly Clear
Mostly clear, with a low around 73. Wind around 0 mph.
7-day forecast for Decatur
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 73°F | Mostly Clear | 0 mph | 3% |
| Saturday | 99°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph N | 24% |
| Saturday Night | 73°F | Partly Cloudy | 0 mph | 13% |
| Sunday | 97°F | Sunny | 0 mph | 9% |
| Sunday Night | 72°F | Mostly Clear | 0 mph | 9% |
| Monday | 96°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 mph | 35% |
| Monday Night | 71°F | Chance Showers And Thunderstorms | 0 mph | 35% |
| Tuesday | 93°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph SW | 43% |
| Tuesday Night | 68°F | Chance Showers And Thunderstorms | 0 to 5 mph NNE | 43% |
| Wednesday | 87°F | Mostly Sunny then Slight Chance Rain Showers | 5 mph N | 19% |
| Wednesday Night | 64°F | Slight Chance Rain Showers then Mostly Clear | 5 mph NNE | 19% |
| Thursday | 85°F | Sunny | 5 to 10 mph NNE | 6% |
| Thursday Night | 62°F | Mostly Clear | 5 mph NNE | 6% |
| Friday | 84°F | Sunny | 5 to 10 mph NNE | 3% |
Forecast source: National Weather Service (api.weather.gov) for Decatur (34.573, -86.990). Updated through the day.
Growing snapshot for Decatur
Last spring frost
Mar 26
First fall frost
Nov 7
Growing season
228 days
Hardiness zone
8a
More local growing data for Decatur: nearby ZIP 35601 weather · frost dates · planting calendar · Alabama frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Decatur 4Se, Al (4.7 mi from Decatur). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.