Arnold, CA Weather & Growing Conditions
Tonight
53°F
Clear then Haze
Haze after midnight. Clear, with a low around 53. North northeast wind around 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 53°F | Clear then Haze | 6 mph NNE | 0% |
| Saturday | 78°F | Sunny | 1 to 7 mph SSW | 0% |
| Saturday Night | 57°F | Partly Cloudy | 1 to 5 mph NNE | 0% |
| Sunday | 79°F | Partly Sunny | 2 to 7 mph WSW | 0% |
| Sunday Night | 56°F | Mostly Cloudy | 5 mph NNE | 0% |
| Monday | 78°F | Mostly Sunny | 2 to 6 mph W | 1% |
| Monday Night | 57°F | Mostly Clear | 5 mph NNE | 0% |
| Tuesday | 80°F | Sunny | 2 to 6 mph W | 0% |
| Tuesday Night | 58°F | Clear | 5 mph NNE | 0% |
| Wednesday | 84°F | Sunny | 2 to 7 mph WSW | 0% |
| Wednesday Night | 61°F | Mostly Clear | 2 to 6 mph NNE | 0% |
| Thursday | 86°F | Sunny | 3 to 7 mph SSW | 0% |
| Thursday Night | 62°F | Mostly Clear | 6 mph NE | 0% |
| Friday | 82°F | Sunny | 6 mph SSW | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Arnold, CA
Last spring frost
May 7
First fall frost
Oct 28
Growing season
169 days
Hardiness zone
8b
Explore more for Arnold, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Calaveras Big Trees, Ca (3.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.