Acton, CA Weather & Growing Conditions
Tonight
45°F
Mostly Clear
Mostly clear, with a low around 45. West northwest wind around 10 mph, with gusts as high as 20 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 45°F | Mostly Clear | 10 mph WNW | 0% |
| Wednesday | 68°F | Sunny | 5 to 15 mph NNE | 0% |
| Wednesday Night | 48°F | Mostly Clear | 15 mph NE | 0% |
| Thursday | 70°F | Sunny | 10 to 15 mph NE | 0% |
| Thursday Night | 50°F | Mostly Clear | 10 to 15 mph NE | 0% |
| Friday | 72°F | Sunny | 15 to 20 mph NE | 0% |
| Friday Night | 53°F | Clear | 15 to 25 mph NE | 0% |
| Saturday | 73°F | Sunny | 15 to 20 mph NE | 0% |
| Saturday Night | 53°F | Clear | 10 to 20 mph NE | 0% |
| Sunday | 74°F | Sunny | 5 to 15 mph NE | 0% |
| Sunday Night | 54°F | Partly Cloudy | 5 to 10 mph NE | 0% |
| Monday | 74°F | Mostly Sunny | 5 mph N | 0% |
| Monday Night | 54°F | Partly Cloudy | 0 to 5 mph SSE | 0% |
| Tuesday | 72°F | Mostly Sunny | 5 to 10 mph NNE | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Acton, CA
Last spring frost
Mar 10
First fall frost
Nov 19
Growing season
248 days
Hardiness zone
9a
Explore more for Acton, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Palmdale, Ca (12.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.