Arnold, CA Weather & Growing Conditions
Today
93°F
Sunny
Sunny. High near 93, with temperatures falling to around 90 in the afternoon. South southwest wind around 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 93°F | Sunny | 6 mph SSW | 0% |
| Tonight | 66°F | Clear | 5 mph N | 0% |
| Wednesday | 92°F | Sunny | 6 mph SSW | 0% |
| Wednesday Night | 66°F | Clear | 5 mph N | 0% |
| Thursday | 93°F | Sunny | 6 mph WSW | 0% |
| Thursday Night | 67°F | Clear | 5 mph NW | 0% |
| Friday | 93°F | Sunny | 6 mph W | 0% |
| Friday Night | 68°F | Clear | 5 mph NNW | 0% |
| Saturday | 93°F | Sunny | 6 mph WSW | 0% |
| Saturday Night | 68°F | Mostly Clear | 1 to 5 mph N | 0% |
| Sunday | 91°F | Sunny | 7 mph S | 0% |
| Sunday Night | 66°F | Mostly Clear | 5 mph W | 0% |
| Monday | 87°F | Sunny | 7 mph SSE | 0% |
| Monday Night | 63°F | Mostly Clear | 6 mph SW | 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 Aug 4, 2026.