Seawillow Weather Forecast
- 40
- 56
Mostly Cloudy
- 55
- 64
Chance Rain Showers
- 59
- 70
Chance Rain Showers
- 45
- 78
Mostly Sunny
- 50
- 68
Partly Sunny
- 59
- 79
Partly Sunny
- 58
- 80
Mostly Sunny
Today 15 Dec Caldwell
Partly cloudy. Highs in the mid 50s. Southeast Winds around 5 Mph.
Tonight 15 Dec Caldwell
Mostly cloudy. Not as cool with Lows around 40. South Winds around 5 Mph.
Seawillow Temperature Statistics
December Temperature
San Marcos, San Marcos Municipal Airport (16.2 miles)
Lowest 9 December, 2025
28 °FAverage December
53 °FHighest 13 December, 2025
80.1 °F
Climate (2020–Present)
San Marcos, San Marcos Municipal Airport (16.2 miles)
Average Low 2020–2025
59.4 °FAverage 2020–2025
70.2 °FAverage High 2020–2025
81.8 °F