Los Alamos, NM Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Los Alamos, a community in Los Alamos County, New Mexico.
This Afternoon
53°F
Mostly Sunny
Mostly sunny. High near 53, with temperatures falling to around 48 in the afternoon. South wind around 5 mph.
7-day forecast for Los Alamos
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 53°F | Mostly Sunny | 5 mph S | 0% |
| Tonight | 34°F | Partly Cloudy | 0 mph | 0% |
| Wednesday | 55°F | Sunny | 0 to 15 mph SW | 0% |
| Wednesday Night | 31°F | Clear | 5 to 10 mph NW | 1% |
| Thursday | 52°F | Sunny | 0 to 5 mph NE | 0% |
| Thursday Night | 34°F | Partly Cloudy | 0 mph | 0% |
| Friday | 53°F | Mostly Sunny | 0 to 5 mph SE | 4% |
| Friday Night | 34°F | Partly Cloudy | 0 to 5 mph NW | 4% |
| Saturday | 55°F | Sunny | 0 to 5 mph NE | 4% |
| Saturday Night | 35°F | Mostly Clear | 0 mph | 1% |
| Sunday | 58°F | Sunny | 0 to 5 mph E | 0% |
| Sunday Night | 37°F | Mostly Clear | 0 to 5 mph NW | 0% |
| Monday | 60°F | Sunny | 0 to 5 mph S | 3% |
| Monday Night | 39°F | Partly Cloudy | 0 to 5 mph W | 3% |
Forecast source: National Weather Service (api.weather.gov) for Los Alamos (35.894, -106.290). Updated through the day.
Growing snapshot for Los Alamos
Last spring frost
May 2
First fall frost
Oct 12
Growing season
162 days
Hardiness zone
7b
More local growing data for Los Alamos: nearby ZIP 87547 weather · frost dates · planting calendar · New Mexico frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Los Alamos, Nm (7.4 mi from Los Alamos). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.