Castle Rock State Park Entrance Weather Forecast
- 52
- 62
Rain Showers
- 51
- 54
Rain
- 47
- 54
Rain Showers
- 47
- 50
Rain Showers Likely
- 47
- 53
Mostly Sunny
- 47
- 59
Partly Sunny
Today 9 Apr Santa Cruz Mountains
Mostly cloudy in the morning then becoming partly cloudy. Areas of dense fog in the morning. Highs in the 60s to lower 70s. Southwest Winds 5 to 10 Mph.
Tonight 9 Apr Santa Cruz Mountains
Mostly cloudy. Areas of fog. Lows in the lower 50s. Light Winds.
Castle Rock State Park Entrance Temperature Statistics
April Temperature
San Jose, San Jose International Airport (12.4 miles)
Lowest 3 April, 2026
46.7 °FAverage April
62.4 °FHighest 5 April, 2026
85.6 °F
Climate (2021–Present)
San Jose, San Jose International Airport (12.4 miles)
Average Low 2021–2026
52.1 °FAverage 2021–2026
61.8 °FAverage High 2021–2026
72.7 °F