Castle Rock State Park Entrance Weather Forecast
- 47
- 63
Mostly Sunny
- 48
- 59
Partly Sunny
- 45
- 53
Mostly Sunny
- 50
- 68
Mostly Sunny
- 51
- 71
Partly Sunny
- 50
- 70
Mostly Sunny
- 47
- 71
Mostly Sunny
Today 24 May Santa Cruz Mountains
Sunny. Highs in the 60s to lower 70s. Southwest Winds around 5 Mph.
Tonight 24 May Santa Cruz Mountains
Mostly clear in the evening then becoming partly cloudy. Areas of fog after midnight. Lows in the upper 40s. Southwest Winds up to 5 Mph.
Castle Rock State Park Entrance Temperature Statistics
May Temperature
San Jose, San Jose International Airport (12.4 miles)
Lowest 4 May, 2026
48.7 °FAverage May
64.6 °FHighest 19 May, 2026
87.7 °F
Climate (2021–Present)
San Jose, San Jose International Airport (12.4 miles)
Average Low 2021–2026
52.2 °FAverage 2021–2026
61.9 °FAverage High 2021–2026
72.7 °F