Oneonta Slough Weather Forecast
- 73
- 85
Mostly Sunny
- 72
- 80
Partly Sunny
- 69
- 78
Patchy Fog
- 68
- 75
Mostly Cloudy
- 67
- 74
Partly Sunny
- 66
- 74
Partly Sunny
- 65
- 73
Partly Sunny
Today 9 Sep San Diego County Coastal Areas
Mostly sunny. Highs 88 to 93 near the coast to 97 to 102 inland. Areas of Winds west to 10 Mph.
Tonight 9 Sep San Diego County Coastal Areas
Mostly clear this evening. Becoming partly cloudy. Lows around 73. Light Winds.
Oneonta Slough Temperature Statistics
September Temperature
Imperial Beach Naval Outlying Field - Ream Field (1.2 miles)
Lowest 3 September, 2026
57.9 °FAverage September
71.8 °FHighest 6 September, 2026
88 °F
Climate (2021–2026)
Imperial Beach Naval Outlying Field - Ream Field (1.2 miles)
Average Low 2021–2026
56.5 °FAverage 2021–2026
63.2 °FAverage High 2021–2026
69.4 °F