Ennis, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Ennis, a town in Madison County, Montana.
This Afternoon
57°F
Showers And Thunderstorms
Showers and thunderstorms before 4pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 57. North wind 3 to 12 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Ennis
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 57°F | Showers And Thunderstorms | 3 to 12 mph N | 86% |
| Tonight | 42°F | Chance Showers And Thunderstorms then Areas Of Fog | 0 to 12 mph NNW | 31% |
| Sunday | 67°F | Areas Of Fog then Mostly Sunny | 0 to 5 mph WSW | 3% |
| Sunday Night | 41°F | Mostly Clear | 5 mph S | 1% |
| Monday | 74°F | Sunny | 1 to 5 mph SSW | 0% |
| Monday Night | 44°F | Mostly Clear | 3 to 7 mph S | 0% |
| Tuesday | 77°F | Sunny | 1 to 6 mph SSW | 1% |
| Tuesday Night | 47°F | Partly Cloudy | 5 to 8 mph S | 9% |
| Wednesday | 77°F | Mostly Sunny | 5 to 8 mph SSW | 4% |
| Wednesday Night | 47°F | Partly Cloudy | 8 to 16 mph S | 7% |
| Thursday | 80°F | Sunny | 10 to 15 mph S | 1% |
| Thursday Night | 48°F | Mostly Clear | 15 to 21 mph S | 2% |
| Friday | 79°F | Mostly Sunny | 10 to 17 mph S | 2% |
| Friday Night | 46°F | Mostly Cloudy | 12 to 16 mph S | 9% |
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.