Dayton, MT Weather & Growing Conditions
Today
77°F
Sunny
Sunny, with a high near 77. East southeast wind 0 to 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 77°F | Sunny | 0 to 3 mph ESE | 0% |
| Tonight | 52°F | Mostly Clear | 0 to 3 mph N | 0% |
| Wednesday | 83°F | Sunny | 0 to 5 mph E | 0% |
| Wednesday Night | 54°F | Clear | 0 to 3 mph WNW | 0% |
| Thursday | 89°F | Sunny | 0 to 6 mph E | 0% |
| Thursday Night | 58°F | Clear | 0 to 3 mph WNW | 0% |
| Friday | 91°F | Sunny | 0 to 9 mph WSW | 0% |
| Friday Night | 58°F | Clear | 2 to 13 mph SW | 0% |
| Saturday | 88°F | Sunny | 1 to 10 mph SSW | 0% |
| Saturday Night | 57°F | Mostly Clear | 1 to 9 mph W | 0% |
| Sunday | 85°F | Sunny | 0 to 5 mph SW | 0% |
| Sunday Night | 56°F | Mostly Clear | 1 to 5 mph NNW | 0% |
| Monday | 84°F | Sunny | 0 to 3 mph ESE | 0% |
| Monday Night | 55°F | Mostly Clear | 3 mph N | 0% |
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 Aug 4, 2026.