Six Flags - Discovery Kingdom Weather Forecast
- 60
- 88
Increasing Clouds
- 61
- 75
Chance Rain Showers
- 60
- 75
Chance Rain Showers
- 60
- 79
Mostly Sunny
- 62
- 83
Mostly Sunny
- 63
- 84
Chance Rain Showers
Today 17 Sep Carquinez Strait and Delta
Sunny. Highs 91 to 97. West Winds up to 10 Mph with Gusts to around 20 Mph.
Tonight 17 Sep Carquinez Strait and Delta
Mostly clear. Lows 61 to 67. West Winds 10 to 15 Mph.
Six Flags - Discovery Kingdom Temperature Statistics
September Temperature
Napa, Napa County Airport (5 miles)
Lowest 14 September, 2025
48 °FAverage September
66.1 °FHighest 15 September, 2025
91 °F
Climate (2020–Present)
Napa, Napa County Airport (5 miles)
Average Low 2020–2025
46.9 °FAverage 2020–2025
58.1 °FAverage High 2020–2025
70.5 °F