Dayton, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Dayton, a community in Lake County, Montana.
This Afternoon
73°F
Mostly Sunny
Mostly sunny, with a high near 73. South wind around 6 mph.
7-day forecast for Dayton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 73°F | Mostly Sunny | 6 mph S | 2% |
| Tonight | 53°F | Mostly Cloudy | 0 mph | 5% |
| Saturday | 73°F | Sunny | 1 mph ENE | 3% |
| Saturday Night | 53°F | Partly Cloudy | 0 mph | 0% |
| Sunday | 74°F | Sunny | 1 mph SSE | 0% |
| Sunday Night | 53°F | Clear | 1 mph ENE | 0% |
| Monday | 76°F | Sunny | 0 to 3 mph S | 0% |
| Monday Night | 54°F | Mostly Clear | 1 mph E | 0% |
| Tuesday | 74°F | Sunny | 2 mph SSE | 0% |
| Tuesday Night | 53°F | Partly Cloudy | 1 mph ENE | 1% |
| Wednesday | 72°F | Sunny | 0 to 3 mph SSW | 1% |
| Wednesday Night | 53°F | Partly Cloudy | 1 mph W | 3% |
| Thursday | 73°F | Mostly Sunny | 1 mph ESE | 3% |
| Thursday Night | 53°F | Partly Cloudy | 0 mph | 2% |
Forecast source: National Weather Service (api.weather.gov) for Dayton (47.865, -114.277). Updated through the day.
Growing snapshot for Dayton
Last spring frost
May 1
First fall frost
Oct 15
Growing season
165 days
Hardiness zone
6a
More local growing data for Dayton: nearby ZIP 59914 weather · frost dates · planting calendar · Montana frost dates
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Climate data from the nearest NOAA station, Bigfork 13 S, Mt (12.5 mi from Dayton). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.