Castaic Weather Forecast
- 34
- 61
Sunny
- 34
- 68
Sunny
- 37
- 67
Sunny
- 41
- 66
Breezy
- 40
- 63
Breezy
- 46
- 70
Mostly Sunny
- 43
- 69
Mostly Sunny
Today 17 Jan Santa Clarita Valley
Sunny. Highs in the lower 60s.
Tonight 17 Jan Santa Clarita Valley
Clear. Areas of frost after midnight. Lows in the 30s.