Acton, MT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Acton, a community in Yellowstone County, Montana.
This Afternoon
78°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Partly sunny. High near 78, with temperatures falling to around 76 in the afternoon. Northeast wind around 12 mph. Chance of precipitation is 40%.
7-day forecast for Acton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 78°F | Chance Showers And Thunderstorms | 12 mph NE | 39% |
| Tonight | 54°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 8 to 13 mph N | 99% |
| Saturday | 58°F | Showers And Thunderstorms | 15 mph N | 95% |
| Saturday Night | 51°F | Showers And Thunderstorms | 14 mph N | 88% |
| Sunday | 61°F | Rain Showers | 7 to 12 mph NNW | 76% |
| Sunday Night | 48°F | Mostly Cloudy | 2 to 7 mph NNE | 8% |
| Monday | 70°F | Mostly Sunny | 3 to 7 mph SSW | 0% |
| Monday Night | 48°F | Mostly Clear | 3 to 7 mph SSE | 0% |
| Tuesday | 76°F | Mostly Sunny | 7 mph SW | 0% |
| Tuesday Night | 51°F | Partly Cloudy | 5 mph N | 3% |
| Wednesday | 77°F | Sunny | 7 mph WSW | 5% |
| Wednesday Night | 51°F | Mostly Clear | 5 mph S | 3% |
| Thursday | 77°F | Sunny | 8 mph SSW | 1% |
| Thursday Night | 52°F | Mostly Clear | 3 to 7 mph E | 1% |
Forecast source: National Weather Service (api.weather.gov) for Acton (45.929, -108.679). Updated through the day.
Growing snapshot for Acton
Last spring frost
May 4
First fall frost
Oct 7
Growing season
156 days
Hardiness zone
5a
More local growing data for Acton: nearby ZIP 59002 weather · frost dates · planting calendar · Montana frost dates
Nearby towns & communities
Ballantine
Billings
Broadview
Custer
Huntley
Laurel
Lockwood
Mountain View Colony
Nibbe
Shepherd
Worden
Climate data from the nearest NOAA station, Billings Logan Intl Ap, Mt (16.1 mi from Acton). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.