Union, MS Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Union, a town in Neshoba County, Mississippi.
Tonight
64°F
Mostly Cloudy then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms between midnight and 3am, then a chance of showers and thunderstorms. Mostly cloudy. Low around 64, with temperatures rising to around 68 overnight. South wind 5 to 10 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Union
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 64°F | Mostly Cloudy then Slight Chance Showers And Thunderstorms | 5 to 10 mph S | 30% |
| Wednesday | 79°F | Chance Rain Showers then Mostly Cloudy | 5 to 10 mph WSW | 47% |
| Wednesday Night | 48°F | Partly Cloudy then Patchy Fog | 0 to 5 mph NNW | 0% |
| Thursday | 79°F | Mostly Sunny | 0 to 5 mph SW | 1% |
| Thursday Night | 49°F | Partly Cloudy | 0 mph | 4% |
| Friday | 78°F | Sunny | 0 to 10 mph NNW | 3% |
| Friday Night | 43°F | Mostly Clear | 5 to 10 mph N | 0% |
| Saturday | 70°F | Mostly Sunny | 5 to 10 mph N | 1% |
| Saturday Night | 38°F | Partly Cloudy | 5 mph N | 5% |
| Sunday | 67°F | Mostly Sunny | 5 to 10 mph N | 7% |
| Sunday Night | 36°F | Mostly Clear | 5 mph NNW | 3% |
| Monday | 70°F | Sunny | 5 to 10 mph N | 1% |
| Monday Night | 36°F | Mostly Clear | 0 to 5 mph N | 0% |
| Tuesday | 74°F | Sunny | 0 to 5 mph WNW | 3% |
Forecast source: National Weather Service (api.weather.gov) for Union (32.571, -89.115). Updated through the day.
Growing snapshot for Union
Last spring frost
Mar 20
First fall frost
Nov 9
Growing season
235 days
Hardiness zone
8b
More local growing data for Union: nearby ZIP 39365 weather · frost dates · planting calendar · Mississippi frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Philadelphia 1 Wsw, Ms (11.1 mi from Union). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.