Rocklin, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Rocklin, a city in Placer County, California.
Today
91°F
Sunny
Sunny, with a high near 91. Southwest wind around 5 mph.
7-day forecast for Rocklin
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 91°F | Sunny | 5 mph SW | 0% |
| Tonight | 61°F | Partly Cloudy | 5 mph SSE | 0% |
| Sunday | 87°F | Partly Sunny | 5 mph S | 0% |
| Sunday Night | 60°F | Mostly Cloudy | 5 mph S | 0% |
| Monday | 88°F | Sunny | 6 mph SSW | 0% |
| Monday Night | 59°F | Mostly Clear | 6 mph SSE | 0% |
| Tuesday | 88°F | Sunny | 5 mph SSW | 0% |
| Tuesday Night | 61°F | Clear | 5 mph SSE | 0% |
| Wednesday | 94°F | Sunny | 5 mph S | 0% |
| Wednesday Night | 64°F | Mostly Clear | 5 mph SE | 0% |
| Thursday | 97°F | Sunny | 5 mph SW | 0% |
| Thursday Night | 64°F | Mostly Clear | 6 mph SSE | 0% |
| Friday | 92°F | Sunny | 6 mph SSE | 0% |
| Friday Night | 62°F | Mostly Clear | 6 mph SSE | 2% |
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
Nearby towns & communities
Alta
Auburn
Carnelian Bay
Cedar Flat
Colfax
Dollar Point
Dutch Flat
Foresthill
Granite Bay
Kings Beach
Kingvale
Lake of the Pines
Lincoln
Loomis
Meadow Vista
Newcastle
North Auburn
Penryn
Roseville
Sheridan
Soda Springs
Sunnyside-Tahoe City
Tahoe Vista
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 Sep 19, 2026.