Copperopolis, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Copperopolis, a community in Calaveras County, California.
This Afternoon
65°F
Light Rain Likely
Rain likely. Mostly cloudy. High near 65, with temperatures falling to around 59 in the afternoon. South southeast wind 3 to 8 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Copperopolis
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 65°F | Light Rain Likely | 3 to 8 mph SSE | 63% |
| Tonight | 45°F | Mostly Clear | 2 mph NE | 11% |
| Wednesday | 66°F | Sunny | 2 to 10 mph NW | 0% |
| Wednesday Night | 46°F | Partly Cloudy | 0 to 7 mph N | 0% |
| Thursday | 68°F | Sunny | 0 to 7 mph NW | 0% |
| Thursday Night | 46°F | Clear | 0 to 6 mph NNW | 0% |
| Friday | 70°F | Sunny | 0 to 5 mph W | 0% |
| Friday Night | 51°F | Clear | 0 to 3 mph NNE | 0% |
| Saturday | 75°F | Sunny | 1 to 5 mph SSW | 0% |
| Saturday Night | 52°F | Mostly Clear | 2 mph NE | 0% |
| Sunday | 75°F | Sunny | 1 to 5 mph WNW | 0% |
| Sunday Night | 53°F | Partly Cloudy | 0 to 3 mph N | 0% |
| Monday | 73°F | Mostly Sunny | 1 to 6 mph NW | 0% |
| Monday Night | 53°F | Partly Cloudy | 1 to 6 mph N | 0% |
Forecast source: National Weather Service (api.weather.gov) for Copperopolis (37.939, -120.625). Updated through the day.
Growing snapshot for Copperopolis
Last spring frost
Feb 20
First fall frost
Dec 11
Growing season
290 days
Hardiness zone
9b
More local growing data for Copperopolis: nearby ZIP 95228 weather · frost dates · planting calendar · California frost dates
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Climate data from the nearest NOAA station, New Melones Dam Hq, Ca (12.9 mi from Copperopolis). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.