Arnold, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Arnold, a community in Calaveras County, California.
This Afternoon
73°F
Sunny
Sunny. High near 73, with temperatures falling to around 71 in the afternoon. West northwest wind around 5 mph.
7-day forecast for Arnold
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 73°F | Sunny | 5 mph WNW | 0% |
| Tonight | 54°F | Clear then Haze | 6 mph N | 0% |
| Saturday | 79°F | Sunny | 1 to 7 mph W | 0% |
| Saturday Night | 58°F | Partly Cloudy | 1 to 6 mph NE | 0% |
| Sunday | 79°F | Partly Sunny | 2 to 7 mph WSW | 0% |
| Sunday Night | 57°F | Mostly Cloudy | 5 mph NNE | 0% |
| Monday | 79°F | Sunny | 6 mph W | 1% |
| Monday Night | 58°F | Mostly Clear | 5 mph NNE | 0% |
| Tuesday | 80°F | Sunny | 6 mph WNW | 0% |
| Tuesday Night | 59°F | Clear | 5 mph NE | 0% |
| Wednesday | 84°F | Sunny | 2 to 7 mph WSW | 0% |
| Wednesday Night | 63°F | Mostly Clear | 6 mph NE | 0% |
| Thursday | 87°F | Sunny | 3 to 7 mph SSW | 0% |
| Thursday Night | 63°F | Mostly Clear | 6 mph NE | 0% |
Forecast source: National Weather Service (api.weather.gov) for Arnold (38.249, -120.349). Updated through the day.
Growing snapshot for Arnold
Last spring frost
May 7
First fall frost
Oct 28
Growing season
169 days
Hardiness zone
8b
More local growing data for Arnold: nearby ZIP 95224 weather · frost dates · planting calendar · California frost dates
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Climate data from the nearest NOAA station, Calaveras Big Trees, Ca (3.2 mi from Arnold). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.