Rocklin, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Rocklin, a city in Placer County, California.
This Afternoon
69°F
Sunny
Sunny. High near 69, with temperatures falling to around 65 in the afternoon. West northwest wind 2 to 7 mph.
7-day forecast for Rocklin
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 69°F | Sunny | 2 to 7 mph WNW | 0% |
| Tonight | 45°F | Partly Cloudy | 2 mph NE | 1% |
| Thursday | 71°F | Sunny | 5 mph WNW | 0% |
| Thursday Night | 46°F | Mostly Clear | 3 mph ENE | 0% |
| Friday | 70°F | Sunny | 3 mph NE | 0% |
| Friday Night | 47°F | Mostly Clear | 3 mph NE | 0% |
| Saturday | 74°F | Sunny | 3 mph WNW | 0% |
| Saturday Night | 48°F | Mostly Clear | 3 mph ENE | 0% |
| Sunday | 74°F | Sunny | 3 mph N | 0% |
| Sunday Night | 48°F | Partly Cloudy | 2 mph ENE | 0% |
| Monday | 73°F | Mostly Sunny | 3 mph SSE | 0% |
| Monday Night | 49°F | Partly Cloudy | 2 mph E | 1% |
| Tuesday | 73°F | Sunny | 3 mph W | 1% |
| Tuesday Night | 51°F | Partly Cloudy | 5 mph ESE | 6% |
Forecast source: National Weather Service (api.weather.gov) for Rocklin (38.807, -121.250). Updated through the day.
Growing snapshot for Rocklin
Last spring frost
Feb 25
First fall frost
Dec 5
Growing season
286 days
Hardiness zone
9b
More local growing data for Rocklin: nearby ZIP 95677 weather · frost dates · planting calendar · California frost dates
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Climate data from the nearest NOAA station, Auburn, Ca (11.2 mi from Rocklin). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 5, 2026.