Rosemead, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Rosemead, a city in Los Angeles County, California.
Tonight
55°F
Mostly Clear
Mostly clear, with a low around 55. North northwest wind 0 to 5 mph.
7-day forecast for Rosemead
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 55°F | Mostly Clear | 0 to 5 mph NNW | 0% |
| Wednesday | 76°F | Sunny | 0 to 5 mph W | 0% |
| Wednesday Night | 57°F | Mostly Clear | 5 mph NNW | 0% |
| Thursday | 81°F | Sunny | 5 mph N | 0% |
| Thursday Night | 57°F | Mostly Clear | 5 to 10 mph NW | 0% |
| Friday | 84°F | Sunny | 0 to 5 mph N | 0% |
| Friday Night | 59°F | Clear | 0 to 15 mph NNW | 0% |
| Saturday | 86°F | Sunny | 0 to 5 mph NW | 0% |
| Saturday Night | 61°F | Clear | 0 to 15 mph N | 0% |
| Sunday | 87°F | Sunny | 0 to 5 mph SE | 0% |
| Sunday Night | 63°F | Partly Cloudy | 0 to 10 mph NNW | 0% |
| Monday | 84°F | Mostly Sunny | 0 to 5 mph SSW | 0% |
| Monday Night | 61°F | Partly Cloudy | 0 to 5 mph NW | 1% |
| Tuesday | 82°F | Mostly Sunny | 0 to 5 mph S | 2% |
Forecast source: National Weather Service (api.weather.gov) for Rosemead (34.069, -118.083). Updated through the day.
Growing snapshot for Rosemead
Last spring frost
Jan 4
First fall frost
Jan 2
Growing season
365 days
Hardiness zone
10b
More local growing data for Rosemead: nearby ZIP 91770 weather · frost dates · planting calendar · California frost dates
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Climate data from the nearest NOAA station, San Gabriel Fire Dept, Ca (1.7 mi from Rosemead). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.