Steamboat Slough - Simpson Weather Forecast
- 48
- 57
Rain Showers
- 44
- 56
Rain
- 37
- 50
Partly Sunny
- 36
- 48
Partly Sunny
- 36
- 48
Mostly Cloudy
- 38
- 49
Partly Sunny
Today 25 Dec Carquinez Strait and Delta
Rain Showers and a slight chance of Thunderstorms until late Afternoon, then rain and a slight chance of Thunderstorms late in the afternoon. Windy. Some Thunderstorms may produce heavy rainfall. Highs 54 to 59. South Winds 20 to 35 Mph. Gusts up to 60 Mph decreasing to 45 Mph in the afternoon.
Tonight 25 Dec Carquinez Strait and Delta
Rain Showers and a slight chance of Thunderstorms in the Evening, then rain likely after midnight. Windy. Some Thunderstorms may produce heavy rainfall in the evening. Lows around 48. South Winds 15 to 30 Mph with Gusts to around 45 Mph.
Steamboat Slough - Simpson Temperature Statistics
December Temperature
Sacramento Executive Airport (18 miles)
Lowest 2 December, 2025
37 °FAverage December
47.1 °FHighest 17 December, 2025
64 °F
Climate (2020–Present)
Sacramento Executive Airport (18 miles)
Average Low 2020–2025
50.2 °FAverage 2020–2025
61.6 °FAverage High 2020–2025
75.5 °F