Arnold Weather Forecast
- 45
- 63
Rain Likely
- 41
- 54
Rain
- 34
- 47
Rain/Snow
- 31
- 42
Rain/Snow
- 34
- 50
Slight Chance Rain
- 41
- 57
Partly Sunny
Today 9 Apr West Slope Northern Sierra Nevada
Partly cloudy in the Morning, then mostly cloudy with a chance of Showers and Thunderstorms in the afternoon. Highs 46 to 61 higher Elevations. 59 to 69 lower Elevations. Light Winds becoming southwest up to 10 Mph in the afternoon. Gusts up to 25 Mph.
Tonight 9 Apr West Slope Northern Sierra Nevada
Mostly cloudy. At lower Elevations, a chance of Showers and Thunderstorms in the Evening, then rain Showers likely and a slight chance of Thunderstorms after midnight. At higher Elevations, a chance of Showers and Thunderstorms in the Evening, then rain likely with possible snow and Thunderstorms after midnight. Lows 31 to 46 higher Elevations. 41 to 51 lower Elevations. No snow accumulation. Prevailing south Winds up to 10 Mph with Gusts to around 25 Mph.
Arnold Temperature Statistics
April Temperature
COLUMBIA (15.5 miles)
Lowest 3 April, 2026
37.4 °FAverage April
57.4 °FHighest 5 April, 2026
78.8 °F
Climate (2021–Present)
COLUMBIA (15.5 miles)
Average Low 2021–2026
47.1 °FAverage 2021–2026
60 °FAverage High 2021–2026
73.9 °F