Union, AL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Union, a town in Greene County, Alabama.
This Afternoon
79°F
Slight Chance Rain Showers
A slight chance of rain showers after 3pm. Mostly cloudy. High near 79, with temperatures falling to around 75 in the afternoon. Southeast wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Union
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 79°F | Slight Chance Rain Showers | 10 mph SE | 23% |
| Tonight | 65°F | Showers And Thunderstorms | 5 mph SE | 80% |
| Wednesday | 78°F | Showers And Thunderstorms | 0 to 5 mph W | 76% |
| Wednesday Night | 54°F | Partly Cloudy | 0 mph | 3% |
| Thursday | 77°F | Mostly Sunny | 0 mph | 3% |
| Thursday Night | 52°F | Partly Cloudy | 0 mph | 3% |
| Friday | 76°F | Sunny | 0 to 5 mph NW | 3% |
| Friday Night | 47°F | Mostly Clear | 5 mph N | 1% |
| Saturday | 69°F | Mostly Sunny | 5 mph N | 0% |
| Saturday Night | 42°F | Partly Cloudy | 0 to 5 mph N | 3% |
| Sunday | 66°F | Mostly Sunny | 5 mph NW | 7% |
| Sunday Night | 40°F | Mostly Clear | 0 to 5 mph NW | 4% |
| Monday | 68°F | Sunny | 5 mph N | 1% |
| Monday Night | 40°F | Clear | 0 to 5 mph N | 0% |
Forecast source: National Weather Service (api.weather.gov) for Union (32.994, -87.907). Updated through the day.
Growing snapshot for Union
Last spring frost
Mar 19
First fall frost
Nov 8
Growing season
239 days
Hardiness zone
8b
More local growing data for Union: nearby ZIP 35462 weather · frost dates · planting calendar · Alabama frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Gainesville Lock, Al (13.2 mi from Union). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.