Oso Flaco Lake Weather Forecast
- 40
- 66
Increasing Clouds
- 53
- 68
Rain Showers Likely
- 56
- 64
Rain Showers
- 55
- 63
Rain Showers Likely
- 52
- 62
Rain Showers
- 49
- 59
Rain Showers Likely
- 47
- 60
Chance Rain Showers
Today 29 Dec San Luis Obispo County Beaches
Sunny. Highs in the 60s. Northeast Winds 15 to 25 Mph.
Tonight 29 Dec San Luis Obispo County Beaches
Mostly clear. Lows in the 40s to around 50. Northeast Winds 15 to 25 Mph.
Oso Flaco Lake Temperature Statistics
December Temperature
Santa Maria Public Airport/Capt G Allan Hancock Field (13 miles)
Lowest 4 December, 2025
37.9 °FAverage December
55.8 °FHighest 9 December, 2025
81 °F
Climate (2020–Present)
Santa Maria Public Airport/Capt G Allan Hancock Field (13 miles)
Average Low 2020–2025
48 °FAverage 2020–2025
56.7 °FAverage High 2020–2025
68.8 °F