Swanzy Reservoir Weather Forecast
- 52
- 83
Mostly Sunny
- 53
- 81
Mostly Sunny
- 51
- 70
Mostly Sunny
- 49
- 62
Slight Chance Rain Showers
- 49
- 69
Mostly Sunny
- 51
- 74
Mostly Sunny
Today 9 May Carquinez Strait and Delta
Sunny. Highs 86 to 92. West Winds up to 10 Mph.
Tonight 9 May Carquinez Strait and Delta
Mostly clear. Lows 52 to 58. West Winds up to 15 Mph.
Swanzy Reservoir Temperature Statistics
May Temperature
Napa, Napa County Airport (9.3 miles)
Lowest 4 May, 2025
43 °FAverage May
61 °FHighest 5 May, 2025
84.9 °F
Climate (2020–Present)
Napa, Napa County Airport (9.3 miles)
Average Low 2020–2025
47 °FAverage 2020–2025
58.2 °FAverage High 2020–2025
70.7 °F