Decatur, AL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Decatur, a city in Morgan County, Alabama.
Tonight
64°F
Showers And Thunderstorms
A chance of rain showers before 9pm, then showers and thunderstorms. Cloudy, with a low around 64. South southeast wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
7-day forecast for Decatur
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 64°F | Showers And Thunderstorms | 10 mph SSE | 89% |
| Wednesday | 75°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 5 to 10 mph SW | 93% |
| Wednesday Night | 52°F | Areas Of Fog | 0 mph | 0% |
| Thursday | 74°F | Areas Of Fog then Mostly Sunny | 0 mph | 0% |
| Thursday Night | 48°F | Partly Cloudy | 0 mph | 1% |
| Friday | 73°F | Sunny | 0 to 10 mph NNW | 1% |
| Friday Night | 43°F | Mostly Clear | 5 mph NNW | 1% |
| Saturday | 64°F | Mostly Sunny | 5 to 10 mph N | 0% |
| Saturday Night | 38°F | Partly Cloudy | 0 to 5 mph N | 1% |
| Sunday | 64°F | Mostly Sunny | 0 to 10 mph NNW | 7% |
| Sunday Night | 36°F | Mostly Clear | 0 to 5 mph NNW | 4% |
| Monday | 66°F | Sunny | 0 to 5 mph NW | 1% |
| Monday Night | 36°F | Mostly Clear | 0 mph | 0% |
| Tuesday | 69°F | Sunny | 0 to 5 mph WNW | 1% |
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 Nov 4, 2026.