Union Mills, IN Weather & Growing Conditions
Tonight
58°F
Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
A slight chance of rain showers before 7pm, then a slight chance of showers and thunderstorms. Mostly cloudy, with a low around 58. East wind 5 to 10 mph. Chance of precipitation is 20%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 58°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 5 to 10 mph E | 23% |
| Saturday | 77°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 5 to 10 mph SE | 82% |
| Saturday Night | 63°F | Showers And Thunderstorms | 5 mph SW | 86% |
| Sunday | 73°F | Showers And Thunderstorms | 5 to 10 mph N | 81% |
| Sunday Night | 52°F | Showers And Thunderstorms Likely | 10 to 15 mph NE | 65% |
| Monday | 66°F | Showers And Thunderstorms Likely | 10 to 15 mph NE | 55% |
| Monday Night | 48°F | Chance Rain Showers | 10 to 15 mph NE | 34% |
| Tuesday | 65°F | Slight Chance Rain Showers | 10 mph NE | 22% |
| Tuesday Night | 49°F | Slight Chance Rain Showers then Mostly Cloudy | 5 to 10 mph NE | 22% |
| Wednesday | 66°F | Partly Sunny | 5 to 10 mph NE | 11% |
| Wednesday Night | 50°F | Mostly Cloudy | 5 to 10 mph NE | 9% |
| Thursday | 69°F | Partly Sunny | 5 to 10 mph N | 6% |
| Thursday Night | 50°F | Mostly Cloudy | 0 to 10 mph N | 4% |
| Friday | 71°F | Mostly Sunny | 5 to 10 mph NE | 5% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Union Mills, IN
Last spring frost
Apr 29
First fall frost
Oct 13
Growing season
166 days
Hardiness zone
5b
Explore more for Union Mills, IN: full frost dates · planting calendar · Indiana frost dates
Climate data from the nearest NOAA station, Wanatah 2 Wnw, In (8.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.