Dayton, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Dayton, a community in Lake County, Montana.
Today
78°F
Sunny
Sunny, with a high near 78. East wind around 2 mph.
7-day forecast for Dayton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 78°F | Sunny | 2 mph E | 0% |
| Tonight | 53°F | Mostly Clear | 2 mph NE | 0% |
| Wednesday | 85°F | Sunny | 0 to 3 mph SE | 0% |
| Wednesday Night | 56°F | Clear | 0 to 3 mph WNW | 0% |
| Thursday | 90°F | Sunny | 0 to 5 mph E | 0% |
| Thursday Night | 59°F | Clear | 0 to 3 mph SSW | 0% |
| Friday | 93°F | Sunny | 0 to 7 mph SW | 0% |
| Friday Night | 59°F | Clear | 1 to 12 mph SW | 0% |
| Saturday | 91°F | Sunny | 0 to 9 mph SSW | 0% |
| Saturday Night | 58°F | Mostly Clear | 0 to 8 mph W | 0% |
| Sunday | 87°F | Sunny | 0 to 3 mph SSW | 0% |
| Sunday Night | 56°F | Mostly Clear | 0 to 3 mph NW | 0% |
| Monday | 86°F | Sunny | 0 to 3 mph ESE | 0% |
| Monday Night | 56°F | Mostly Clear | 2 mph NNE | 0% |
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 Aug 4, 2026.