Fishtail, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Fishtail, a community in Stillwater County, Montana.
Tonight
53°F
Showers And Thunderstorms
Showers and thunderstorms. Cloudy. Low around 53, with temperatures rising to around 55 overnight. West northwest wind around 5 mph. Chance of precipitation is 100%.
7-day forecast for Fishtail
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 53°F | Showers And Thunderstorms | 5 mph WNW | 96% |
| Saturday | 59°F | Showers And Thunderstorms | 2 to 9 mph NNW | 98% |
| Saturday Night | 49°F | Showers And Thunderstorms | 3 to 8 mph NW | 91% |
| Sunday | 64°F | Rain Showers Likely | 5 mph NW | 61% |
| Sunday Night | 45°F | Mostly Cloudy | 1 to 5 mph SSW | 14% |
| Monday | 73°F | Sunny | 1 to 5 mph S | 4% |
| Monday Night | 48°F | Mostly Clear | 6 mph SSW | 0% |
| Tuesday | 77°F | Mostly Sunny | 5 mph E | 3% |
| Tuesday Night | 51°F | Partly Cloudy | 6 mph SSW | 4% |
| Wednesday | 78°F | Sunny | 5 mph NE | 8% |
| Wednesday Night | 51°F | Mostly Clear | 3 to 7 mph SSE | 1% |
| Thursday | 79°F | Sunny | 5 mph ESE | 1% |
| Thursday Night | 51°F | Partly Cloudy | 7 mph S | 2% |
| Friday | 80°F | Mostly Sunny | 5 mph S | 2% |
Forecast source: National Weather Service (api.weather.gov) for Fishtail (45.448, -109.508). Updated through the day.
Growing snapshot for Fishtail
Last spring frost
Jun 1
First fall frost
Sep 11
Growing season
100 days
Hardiness zone
5a
More local growing data for Fishtail: nearby ZIP 59001 weather · frost dates · planting calendar · Montana frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Nye #2, Mt (14.6 mi from Fishtail). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.