Union, MS Weather & Growing Conditions
Overnight
63°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 4am, then a slight chance of showers and thunderstorms. Mostly cloudy, with a low around 63. South wind around 5 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 63°F | Chance Showers And Thunderstorms | 5 mph S | 28% |
| Wednesday | 78°F | Rain Showers Likely then Partly Sunny | 5 to 10 mph WSW | 66% |
| Wednesday Night | 48°F | Partly Cloudy then Patchy Fog | 0 to 5 mph NNW | 0% |
| Thursday | 79°F | Patchy Fog then Sunny | 0 to 5 mph N | 0% |
| Thursday Night | 48°F | Mostly Clear | 0 mph | 0% |
| Friday | 78°F | Sunny | 0 to 10 mph N | 0% |
| Friday Night | 44°F | Mostly Clear | 5 to 10 mph N | 0% |
| Saturday | 69°F | Mostly Sunny | 5 to 10 mph N | 1% |
| Saturday Night | 38°F | Partly Cloudy | 5 to 10 mph N | 1% |
| Sunday | 66°F | Mostly Sunny | 5 to 10 mph N | 1% |
| Sunday Night | 37°F | Mostly Clear | 5 mph N | 2% |
| Monday | 69°F | Sunny | 5 mph N | 2% |
| Monday Night | 38°F | Mostly Clear | 0 mph | 2% |
| Tuesday | 73°F | Sunny | 0 to 5 mph NNW | 4% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Union, MS
Last spring frost
Mar 20
First fall frost
Nov 9
Growing season
235 days
Hardiness zone
8b
Explore more for Union, MS: full frost dates · planting calendar · Mississippi frost dates
Climate data from the nearest NOAA station, Philadelphia 1 Wsw, Ms (11.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.