Newcastle Weather Forecast
- 50
- 75
Mostly Sunny
- 51
- 76
Partly Sunny
- 53
- 79
Mostly Sunny
- 57
- 82
Mostly Cloudy
- 59
- 85
Mostly Sunny
- 60
- 85
Mostly Sunny
Today 12 Mar Southern Sacramento Valley
Sunny. Highs 76 to 82. Light Winds.
Tonight 12 Mar Southern Sacramento Valley
Mostly clear. Lows 46 to 52. Light Winds.
Newcastle Temperature Statistics
March Temperature
Auburn Municipal Airport (5.6 miles)
Lowest 5 March, 2026
35.6 °FAverage March
56.3 °FHighest 7 March, 2026
71.6 °F
Climate (2021–Present)
Auburn Municipal Airport (5.6 miles)
Average Low 2021–2026
51.1 °FAverage 2021–2026
61.8 °FAverage High 2021–2026
71.8 °F