Rio Vista Park Weather Forecast
- 72
- 91
Partly Sunny
- 74
- 93
Partly Sunny
- 73
- 95
Mostly Sunny
- 71
- 91
Mostly Sunny
- 68
- 88
Mostly Sunny
- 66
- 85
Mostly Sunny
Today 7 Sep Orange County Inland
Partly cloudy with a slight chance of Showers. Warmer. Highs 89 to 93. Light Winds becoming west 10 Mph this afternoon. Chance of measurable precipitation 20 percent.
Tonight 7 Sep Orange County Inland
Mostly clear in the evening. Becoming partly cloudy. Lows 68 to 72. Areas of Winds west to 10 Mph in the evening becoming light.
Rio Vista Park Temperature Statistics
September Temperature
Fullerton, Fullerton Municipal Airport (6.8 miles)
Lowest 2 September, 2026
63.6 °FAverage September
74 °FHighest 1 September, 2026
85.6 °F
Climate (2021–2026)
Fullerton, Fullerton Municipal Airport (6.8 miles)
Average Low 2021–2026
57.1 °FAverage 2021–2026
66.6 °FAverage High 2021–2026
76.9 °F