Arnold, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Arnold, a community in Calaveras County, California.
Tonight
37°F
Slight Chance Light Rain then Mostly Clear
A slight chance of rain before 7pm. Mostly clear, with a low around 37. East wind around 6 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Arnold
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 37°F | Slight Chance Light Rain then Mostly Clear | 6 mph E | 18% |
| Wednesday | 56°F | Patchy Frost then Sunny | 2 to 7 mph NNW | 0% |
| Wednesday Night | 41°F | Partly Cloudy | 5 mph NNE | 0% |
| Thursday | 59°F | Sunny | 2 to 6 mph WNW | 0% |
| Thursday Night | 42°F | Clear | 2 to 6 mph NNE | 0% |
| Friday | 64°F | Sunny | 0 to 7 mph NW | 0% |
| Friday Night | 46°F | Clear | 0 to 7 mph NE | 0% |
| Saturday | 68°F | Sunny | 0 to 7 mph S | 0% |
| Saturday Night | 47°F | Mostly Clear | 0 to 6 mph E | 0% |
| Sunday | 68°F | Sunny | 0 to 6 mph WNW | 0% |
| Sunday Night | 49°F | Partly Cloudy | 0 to 5 mph NE | 0% |
| Monday | 65°F | Mostly Sunny | 0 to 5 mph WSW | 0% |
| Monday Night | 48°F | Partly Cloudy | 0 to 5 mph NE | 0% |
| Tuesday | 64°F | Mostly Sunny | 0 to 5 mph SSW | 6% |
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
Nearby towns & communities
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Camanche Village
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Copperopolis
Dorrington
Douglas Flat
Forest Meadows
Glencoe
Hathaway Pines
Knights Ferry
Mountain Ranch
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Orange Blossom
Rail Road Flat
Rancho Calaveras
San Andreas
Sheep Ranch
Tuttletown
Vallecito
Valley Springs
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West Point
Wilseyville
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 Nov 4, 2026.