South Arm Weather Forecast
- 42
- 51
Mostly Cloudy
- 46
- 52
Mostly Cloudy
- 45
- 53
Partly Sunny
- 48
- 59
Mostly Cloudy
- 53
- 60
Chance Rain Showers
- 48
- 57
Chance Rain Showers
Today 12 Dec Northern San Joaquin Valley
Mostly cloudy. Areas of fog. Locally dense until late afternoon. Patchy fog late in the afternoon. Highs 47 to 57. Light Winds.
Tonight 12 Dec Northern San Joaquin Valley
Mostly cloudy. Patchy fog in the evening. Areas of dense fog. Locally dense after midnight. Lows 39 to 45. Light Winds.
South Arm Temperature Statistics
December Temperature
Sacramento Mather Airport (31.7 miles)
Lowest 4 December, 2025
35.6 °FAverage December
45.7 °FHighest 3 December, 2025
62.6 °F
Climate (2020–Present)
Sacramento Mather Airport (31.7 miles)
Average Low 2020–2025
48.6 °FAverage 2020–2025
61.6 °FAverage High 2020–2025
75.3 °F