Blacklake, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Blacklake, a community in San Luis Obispo County, California.
This Afternoon
78°F
Sunny
Sunny, with a high near 78. Northwest wind around 10 mph.
7-day forecast for Blacklake
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 78°F | Sunny | 10 mph NW | 0% |
| Tonight | 51°F | Patchy Fog | 5 to 10 mph NW | 0% |
| Saturday | 79°F | Patchy Fog then Mostly Sunny | 5 to 15 mph WNW | 1% |
| Saturday Night | 52°F | Patchy Fog | 5 to 10 mph NW | 1% |
| Sunday | 76°F | Patchy Fog then Partly Sunny | 5 to 10 mph WNW | 2% |
| Sunday Night | 52°F | Patchy Fog | 5 to 10 mph NW | 2% |
| Monday | 73°F | Patchy Fog then Mostly Sunny | 5 to 15 mph NW | 1% |
| Monday Night | 55°F | Partly Cloudy | 0 to 10 mph NW | 1% |
| Tuesday | 70°F | Mostly Sunny | 0 to 10 mph NW | 0% |
| Tuesday Night | 56°F | Partly Cloudy | 0 to 10 mph NNW | 0% |
| Wednesday | 78°F | Sunny | 0 to 10 mph NNW | 0% |
| Wednesday Night | 60°F | Partly Cloudy | 0 to 5 mph NE | 0% |
| Thursday | 78°F | Mostly Sunny | 0 to 10 mph S | 1% |
| Thursday Night | 60°F | Partly Cloudy | 0 to 5 mph NNW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Blacklake (35.050, -120.539). Updated through the day.
Growing snapshot for Blacklake
Last spring frost
Feb 4
First fall frost
Dec 13
Growing season
315 days
Hardiness zone
9b
More local growing data for Blacklake: nearby ZIP 93444 weather · frost dates · planting calendar · California frost dates
Nearby towns & communities
Arroyo Grande
Atascadero
Avila Beach
California Polytechnic State University
Callender
Cambria
Cayucos
Creston
Edna
El Paso de Robles (Paso Robles)
Garden Farms
Grover Beach
Los Berros
Los Osos
Los Ranchos
Morro Bay
Nipomo
Oceano
Pismo Beach
San Luis Obispo
San Miguel
San Simeon
Santa Margarita
Shandon
Templeton
Whitley Gardens
Woodlands
Climate data from the nearest NOAA station, Santa Maria Public Ap, Ca (9.9 mi from Blacklake). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.