Trego, MT Weather & Growing Conditions
This Afternoon
37°F
Partly Sunny
Partly sunny, with a high near 37. South southwest wind around 2 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 37°F | Partly Sunny | 2 mph SSW | 0% |
| Tonight | 27°F | Mostly Cloudy | 2 mph ENE | 2% |
| Wednesday | 39°F | Mostly Sunny | 2 mph S | 0% |
| Wednesday Night | 28°F | Mostly Clear | 2 to 6 mph SSE | 5% |
| Thursday | 35°F | Partly Sunny then Slight Chance Light Snow | 6 mph SSW | 21% |
| Thursday Night | 31°F | Slight Chance Light Snow then Mostly Cloudy | 7 mph SW | 21% |
| Friday | 36°F | Slight Chance Light Snow | 5 to 8 mph SSW | 24% |
| Friday Night | 30°F | Slight Chance Light Snow then Mostly Cloudy | 3 to 8 mph SSW | 24% |
| Saturday | 39°F | Partly Sunny | 5 mph S | 6% |
| Saturday Night | 34°F | Mostly Cloudy then Slight Chance Light Rain | 2 to 8 mph SSE | 23% |
| Sunday | 42°F | Chance Light Rain then Slight Chance Rain And Snow | 8 mph S | 32% |
| Sunday Night | 33°F | Slight Chance Rain And Snow then Mostly Cloudy | 3 to 7 mph SSW | 24% |
| Monday | 39°F | Mostly Cloudy then Slight Chance Light Rain | 5 mph S | 15% |
| Monday Night | 34°F | Slight Chance Light Rain then Chance Light Snow | 6 mph SSE | 26% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Trego, MT
Last spring frost
May 16
First fall frost
Sep 18
Growing season
121 days
Hardiness zone
5a
Explore more for Trego, MT: full frost dates · planting calendar · Montana frost dates
Climate data from the nearest NOAA station, Fortine 1 N, Mt (7.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.