Ennis, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Ennis, a town in Madison County, Montana.
Overnight
47°F
Patchy Fog
Patchy fog and showers and thunderstorms. Mostly cloudy, with a low around 47. North northwest wind around 3 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Ennis
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 47°F | Patchy Fog | 3 mph NNW | 78% |
| Saturday | 60°F | Areas Of Fog | 0 to 9 mph NNE | 81% |
| Saturday Night | 41°F | Chance Light Rain then Areas Of Fog | 0 to 9 mph NNW | 54% |
| Sunday | 68°F | Areas Of Fog then Partly Sunny | 0 to 3 mph NW | 9% |
| Sunday Night | 40°F | Mostly Clear | 6 mph SE | 0% |
| Monday | 77°F | Sunny | 2 to 6 mph SW | 0% |
| Monday Night | 43°F | Mostly Clear | 7 mph S | 0% |
| Tuesday | 77°F | Sunny | 1 to 5 mph SW | 1% |
| Tuesday Night | 45°F | Partly Cloudy | 7 mph S | 2% |
| Wednesday | 79°F | Sunny | 2 to 7 mph SSW | 5% |
| Wednesday Night | 46°F | Mostly Clear | 5 to 14 mph S | 3% |
| Thursday | 80°F | Sunny | 6 to 9 mph S | 2% |
| Thursday Night | 47°F | Mostly Clear | 9 to 14 mph S | 1% |
| Friday | 80°F | Mostly Sunny | 7 to 13 mph SSW | 2% |
Forecast source: National Weather Service (api.weather.gov) for Ennis (45.346, -111.731). Updated through the day.
Growing snapshot for Ennis
Last spring frost
Jun 16
First fall frost
Sep 4
Growing season
78 days
Hardiness zone
5a
More local growing data for Ennis: nearby ZIP 59729 weather · frost dates · planting calendar · Montana frost dates
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Climate data from the nearest NOAA station, Ennis, Mt (3.1 mi from Ennis). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.