St Joseph's Regional Open Space Weather Forecast
- 54
- 75
Mostly Sunny
- 56
- 80
Mostly Sunny
- 63
- 88
Mostly Sunny
- 61
- 88
Partly Sunny
- 57
- 81
Mostly Sunny
- 53
- 80
Mostly Sunny
Today 21 Sep Santa Cruz Mountains
Partly cloudy in the morning then becoming sunny. Areas of fog in the morning. Highs in the 60s to lower 70s. Southwest Winds up to 5 Mph.
Tonight 21 Sep Santa Cruz Mountains
Partly cloudy in the evening then becoming mostly cloudy. Patchy fog after midnight. Lows in the lower 50s. Light Winds. Becoming southwest up to 5 Mph after midnight.
St Joseph's Regional Open Space Temperature Statistics
September Temperature
San Jose, San Jose International Airport (11.2 miles)
Lowest 5 September, 2026
54.6 °FAverage September
70.5 °FHighest 9 September, 2026
97.6 °F
Climate (2021–2026)
San Jose, San Jose International Airport (11.2 miles)
Average Low 2021–2026
52.3 °FAverage 2021–2026
62.1 °FAverage High 2021–2026
72.8 °F