Westminster, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Westminster, a city in Orange County, California.
Overnight
67°F
Mostly Cloudy
Mostly cloudy, with a low around 67. West wind around 0 mph.
7-day forecast for Westminster
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 67°F | Mostly Cloudy | 0 mph | 0% |
| Tuesday | 80°F | Mostly Sunny | 0 to 10 mph SW | 0% |
| Tuesday Night | 68°F | Partly Cloudy | 0 to 5 mph SW | 0% |
| Wednesday | 80°F | Mostly Sunny | 0 to 10 mph SW | 0% |
| Wednesday Night | 68°F | Partly Cloudy | 0 to 5 mph SW | 0% |
| Thursday | 81°F | Mostly Sunny | 0 to 10 mph SW | 0% |
| Thursday Night | 69°F | Partly Cloudy | 0 to 10 mph S | 0% |
| Friday | 79°F | Mostly Sunny | 0 to 10 mph S | 0% |
| Friday Night | 69°F | Partly Cloudy | 0 to 10 mph S | 0% |
| Saturday | 83°F | Sunny | 0 to 10 mph S | 0% |
| Saturday Night | 69°F | Mostly Clear | 0 to 10 mph S | 0% |
| Sunday | 82°F | Sunny | 0 to 10 mph S | 0% |
| Sunday Night | 69°F | Partly Cloudy | 5 to 10 mph S | 1% |
| Monday | 81°F | Mostly Sunny | 5 to 10 mph S | 1% |
Forecast source: National Weather Service (api.weather.gov) for Westminster (33.752, -117.994). Updated through the day.
Growing snapshot for Westminster
Growing season
365 days
Hardiness zone
10a
More local growing data for Westminster: nearby ZIP 92683 weather · frost dates · planting calendar · California frost dates
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Orange
Climate data from the nearest NOAA station, Santa Ana Fire Stn, Ca (7.3 mi from Westminster). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.