Los Alamos, CA Weather & Growing Conditions
Overnight
52°F
Patchy Fog
Patchy fog after 5am. Mostly cloudy, with a low around 52. East northeast wind around 0 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 52°F | Patchy Fog | 0 mph | 0% |
| Tuesday | 80°F | Patchy Fog then Mostly Sunny | 0 to 10 mph WSW | 0% |
| Tuesday Night | 53°F | Patchy Fog | 0 to 10 mph NNW | 0% |
| Wednesday | 80°F | Patchy Fog then Mostly Sunny | 0 to 10 mph WNW | 0% |
| Wednesday Night | 54°F | Patchy Fog | 0 to 10 mph NW | 0% |
| Thursday | 80°F | Patchy Fog then Mostly Sunny | 0 to 10 mph WNW | 0% |
| Thursday Night | 57°F | Patchy Fog | 0 to 10 mph NNW | 0% |
| Friday | 86°F | Patchy Fog then Mostly Sunny | 0 to 10 mph WNW | 0% |
| Friday Night | 59°F | Mostly Clear | 0 to 10 mph NNW | 0% |
| Saturday | 88°F | Sunny | 0 to 10 mph WSW | 0% |
| Saturday Night | 60°F | Mostly Clear | 0 to 10 mph NNW | 0% |
| Sunday | 87°F | Sunny | 0 to 10 mph SW | 0% |
| Sunday Night | 58°F | Partly Cloudy | 0 to 10 mph NW | 1% |
| Monday | 83°F | Sunny | 0 to 10 mph WSW | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Los Alamos, CA
Last spring frost
Jan 20
First fall frost
Dec 19
Growing season
335 days
Hardiness zone
9b
Explore more for Los Alamos, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Lompoc, Ca (13.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.