Westmont, CA Weather & Growing Conditions
This Afternoon
82°F
Mostly Sunny
Mostly sunny, with a high near 82. Southwest wind 5 to 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 82°F | Mostly Sunny | 5 to 10 mph SW | 1% |
| Tonight | 66°F | Patchy Fog | 0 to 10 mph SSW | 1% |
| Sunday | 81°F | Patchy Fog then Partly Sunny | 5 to 10 mph SW | 1% |
| Sunday Night | 65°F | Patchy Fog | 0 to 10 mph S | 1% |
| Monday | 79°F | Mostly Sunny | 5 to 10 mph SSW | 1% |
| Monday Night | 64°F | Mostly Cloudy then Patchy Fog | 5 to 10 mph SSW | 0% |
| Tuesday | 79°F | Patchy Fog then Mostly Sunny | 5 to 10 mph SSW | 0% |
| Tuesday Night | 67°F | Mostly Clear | 0 to 10 mph SW | 0% |
| Wednesday | 84°F | Sunny | 0 to 10 mph W | 0% |
| Wednesday Night | 68°F | Mostly Clear | 0 to 10 mph SSW | 0% |
| Thursday | 86°F | Sunny | 0 to 10 mph SW | 0% |
| Thursday Night | 69°F | Mostly Clear | 0 to 10 mph WSW | 0% |
| Friday | 85°F | Mostly Sunny | 0 to 10 mph SW | 1% |
| Friday Night | 69°F | Partly Cloudy | 0 to 10 mph S | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Westmont, CA
Growing season
365 days
Hardiness zone
10b
Explore more for Westmont, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Hawthorne Muni Ap, Ca (3.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.