Union Mills, IN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Union Mills, a community in Laporte County, Indiana.
This Afternoon
66°F
Partly Sunny
Partly sunny. High near 66, with temperatures falling to around 60 in the afternoon. Southwest wind around 15 mph, with gusts as high as 25 mph.
7-day forecast for Union Mills
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 66°F | Partly Sunny | 15 mph SW | 1% |
| Tonight | 46°F | Cloudy | 10 to 15 mph SW | 13% |
| Thursday | 55°F | Mostly Cloudy then Chance Rain Showers | 10 to 15 mph SW | 31% |
| Thursday Night | 40°F | Rain Showers Likely | 5 to 10 mph NW | 67% |
| Friday | 49°F | Rain Showers Likely | 10 to 15 mph NW | 55% |
| Friday Night | 36°F | Chance Rain Showers | 5 to 15 mph NW | 34% |
| Saturday | 50°F | Mostly Sunny | 5 to 10 mph NW | 6% |
| Saturday Night | 31°F | Mostly Clear | 0 to 5 mph W | 0% |
| Sunday | 55°F | Sunny | 5 to 10 mph W | 2% |
| Sunday Night | 33°F | Mostly Clear | 5 mph W | 2% |
| Monday | 59°F | Sunny | 5 to 10 mph SW | 0% |
| Monday Night | 38°F | Mostly Clear | 5 to 10 mph SW | 0% |
| Tuesday | 60°F | Sunny | 5 mph W | 1% |
| Tuesday Night | 36°F | Mostly Clear | 0 to 5 mph NW | 2% |
Forecast source: National Weather Service (api.weather.gov) for Union Mills (41.495, -86.784). Updated through the day.
Growing snapshot for Union Mills
Last spring frost
Apr 29
First fall frost
Oct 13
Growing season
166 days
Hardiness zone
5b
More local growing data for Union Mills: nearby ZIP 46382 weather · frost dates · planting calendar · Indiana frost dates
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Climate data from the nearest NOAA station, Wanatah 2 Wnw, In (8.8 mi from Union Mills). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 5, 2026.