Dayton, MT Weather & Growing Conditions
This Afternoon
72°F
Mostly Sunny
Mostly sunny, with a high near 72. South wind around 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 72°F | Mostly Sunny | 6 mph S | 2% |
| Tonight | 52°F | Mostly Cloudy | 1 mph NNE | 4% |
| Saturday | 72°F | Sunny | 2 mph E | 2% |
| Saturday Night | 51°F | Partly Cloudy | 1 mph S | 0% |
| Sunday | 73°F | Sunny | 0 to 3 mph SSE | 0% |
| Sunday Night | 52°F | Clear | 2 mph SE | 0% |
| Monday | 75°F | Sunny | 0 to 5 mph S | 0% |
| Monday Night | 52°F | Mostly Clear | 2 mph WSW | 0% |
| Tuesday | 73°F | Sunny | 0 to 3 mph SSE | 0% |
| Tuesday Night | 52°F | Partly Cloudy | 1 mph N | 1% |
| Wednesday | 71°F | Sunny | 0 to 5 mph SSW | 1% |
| Wednesday Night | 51°F | Partly Cloudy | 2 mph NW | 3% |
| Thursday | 72°F | Mostly Sunny | 2 mph ENE | 3% |
| Thursday Night | 52°F | Partly Cloudy | 1 mph N | 2% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Dayton, MT
Last spring frost
May 1
First fall frost
Oct 15
Growing season
165 days
Hardiness zone
6a
Explore more for Dayton, MT: full frost dates · planting calendar · Montana frost dates
Climate data from the nearest NOAA station, Bigfork 13 S, Mt (12.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.