Union Star, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Union Star, a town in Andrew County, Missouri.
Overnight
72°F
Partly Cloudy
Partly cloudy, with a low around 72. South wind around 9 mph, with gusts as high as 20 mph. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Union Star
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 72°F | Partly Cloudy | 9 mph S | 5% |
| Saturday | 87°F | Chance Rain Showers then Partly Sunny | 7 to 12 mph SSW | 26% |
| Saturday Night | 65°F | Showers And Thunderstorms Likely | 7 mph NNW | 64% |
| Sunday | 75°F | Chance Showers And Thunderstorms | 6 to 10 mph N | 44% |
| Sunday Night | 60°F | Chance Showers And Thunderstorms | 7 to 10 mph NE | 49% |
| Monday | 65°F | Chance Rain Showers | 12 mph NE | 49% |
| Monday Night | 54°F | Chance Rain Showers then Mostly Cloudy | 6 to 12 mph NNE | 29% |
| Tuesday | 63°F | Mostly Cloudy | 9 mph NE | 8% |
| Tuesday Night | 49°F | Mostly Cloudy | 3 to 8 mph ENE | 5% |
| Wednesday | 66°F | Mostly Sunny | 6 mph ENE | 2% |
| Wednesday Night | 53°F | Mostly Cloudy | 5 mph E | 6% |
| Thursday | 68°F | Slight Chance Rain Showers | 5 mph ESE | 17% |
| Thursday Night | 56°F | Mostly Cloudy then Slight Chance Rain Showers | 3 mph E | 19% |
| Friday | 69°F | Slight Chance Rain Showers | 6 mph ESE | 19% |
Forecast source: National Weather Service (api.weather.gov) for Union Star (39.979, -94.598). Updated through the day.
Growing snapshot for Union Star
Last spring frost
Apr 17
First fall frost
Oct 19
Growing season
184 days
Hardiness zone
6a
More local growing data for Union Star: nearby ZIP 64494 weather · frost dates · planting calendar · Missouri frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Cosby 2W, Mo (10.8 mi from Union Star). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.