Trego, MT Weather & Growing Conditions
Overnight
45°F
Patchy Smoke
Patchy smoke. Mostly clear, with a low around 45. Wind around 0 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 45°F | Patchy Smoke | 0 mph | 0% |
| Tuesday | 77°F | Sunny | 2 mph NW | 0% |
| Tuesday Night | 49°F | Mostly Clear | 2 mph WSW | 0% |
| Wednesday | 82°F | Sunny | 0 to 3 mph SW | 0% |
| Wednesday Night | 52°F | Mostly Clear | 1 to 5 mph SSW | 0% |
| Thursday | 89°F | Sunny | 0 to 5 mph SSW | 0% |
| Thursday Night | 56°F | Mostly Clear | 1 to 6 mph SSW | 0% |
| Friday | 89°F | Sunny | 0 to 7 mph SSW | 0% |
| Friday Night | 56°F | Mostly Clear | 2 to 10 mph SSW | 0% |
| Saturday | 86°F | Sunny | 1 to 8 mph SSW | 0% |
| Saturday Night | 55°F | Mostly Clear | 1 to 7 mph SSW | 0% |
| Sunday | 83°F | Sunny | 3 mph SSW | 0% |
| Sunday Night | 53°F | Mostly Clear | 0 to 5 mph SW | 1% |
| Monday | 82°F | Sunny | 2 mph W | 2% |
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 (9.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.