Antioch Weather Forecast
- 63
- 82
Sunny
- 64
- 84
Mostly Sunny
- 66
- 80
Chance Rain Showers
- 63
- 80
Chance Rain Showers
- 63
- 82
Slight Chance Rain Showers
- 62
- 82
Mostly Sunny
- 62
- 84
Mostly Sunny
Today 6 Sep East Bay Interior Valleys
Sunny. Highs in the lower 80s. West Winds 10 to 15 Mph.
Tonight 6 Sep East Bay Interior Valleys
Mostly clear. Lows in the upper 50s. Southwest Winds 5 to 15 Mph.
Antioch Temperature Statistics
September Temperature
Concord, Buchanan Field (13 miles)
Lowest 4 September, 2025
59 °FAverage September
72.6 °FHighest 1 September, 2025
99 °F
Climate (2020–Present)
Concord, Buchanan Field (13 miles)
Average Low 2020–2025
50.7 °FAverage 2020–2025
61.4 °FAverage High 2020–2025
74.6 °F