Castle Rock Weather Forecast
- 53
- 84
Mostly Sunny
- 49
- 64
Breezy
- 48
- 60
Breezy
- 49
- 61
Chance Rain
- 50
- 62
Chance Rain
- 50
- 61
Mostly Cloudy
- 49
- 61
Mostly Sunny
Today 17 Oct Southern Monterey Bay and Big Sur Coast
Sunny. Highs in the lower 90s. Northwest Winds 5 to 10 Mph.
Tonight 17 Oct Southern Monterey Bay and Big Sur Coast
Mostly clear. Lows in the mid 50s. West Winds around 5 Mph.
Castle Rock Temperature Statistics
October Temperature
Monterey Regional Airport (14.9 miles)
Lowest 12 October, 2026
48.7 °FAverage October
62.5 °FHighest 4 October, 2026
84.7 °F
Climate (2021–2026)
Monterey Regional Airport (14.9 miles)
Average Low 2021–2026
50.3 °FAverage 2021–2026
57.6 °FAverage High 2021–2026
65.4 °F