Walnut Canyon Reservoir Weather Forecast
- 55
- 80
Mostly Sunny
- 55
- 81
Mostly Sunny
- 55
- 79
Partly Sunny
- 52
- 70
Partly Sunny
- 55
- 74
Partly Sunny
- 55
- 78
Mostly Sunny
Today 19 Oct Orange County Inland
Partly cloudy with patchy fog in the morning. Becoming mostly sunny. Highs around 78 towards the coast to 79 to 82 farther inland. Light Winds.
Tonight 19 Oct Orange County Inland
Partly cloudy. Patchy fog overnight. Lows 54 to 58. Light Winds.
Walnut Canyon Reservoir Temperature Statistics
October Temperature
Corona Airport (9.3 miles)
Lowest 16 October, 2025
44.1 °FAverage October
64.9 °FHighest 10 October, 2025
91 °F
Climate (2020–Present)
Corona Airport (9.3 miles)
Average Low 2020–2025
52.1 °FAverage 2020–2025
64.8 °FAverage High 2020–2025
78 °F