September weather in Lakeport, CA
The average temperature in Lakeport in September is 69.8°F (50.7°F–88.9°F). Average precipitation: 0.16 inches.
September is a fall month in Lakeport, and is warmer than the annual average of 59.8°F. Daily temperatures swing about 38.2°F between overnight low and afternoon high. Expect about 1 days with precipitation. Daylight averages about 12h 14m. For travel, September is hot.
Avg High
88.9°F
Avg Low
50.7°F
Precipitation
0.16 in
Daylight
12h 14m
September records in Lakeport
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 109.0°F (2017) | 44.1°F (2008) | 0.00 in (1954) |
| September 2 | 111.0°F (2017) | 46.0°F (2008) | 0.00 in (1954) |
| September 3 | 108.0°F (2017) | 48.0°F (2004) | 0.11 in (2003) |
| September 4 | 105.1°F (2024) | 46.9°F (2002) | 0.00 in (1954) |
| September 5 | 111.9°F (2022) | 44.1°F (2015) | 0.00 in (1954) |
| September 6 | 117.0°F (2022) | 45.0°F (2002) | 0.00 in (1954) |
| September 7 | 111.0°F (2020) | 43.0°F (2002) | 0.00 in (1954) |
| September 8 | 109.9°F (2022) | 44.1°F (2002) | 0.01 in (2025) |
| September 9 | 109.0°F (2022) | 45.0°F (2012) | 0.39 in (2025) |
| September 10 | 105.1°F (2015) | 0.1°F (2024) | 0.00 in (1954) |
| September 11 | 104.0°F (2015) | 44.1°F (2005) | 0.00 in (1954) |
| September 12 | 102.9°F (2006) | 44.1°F (1949) | 0.00 in (1949) |
| September 13 | 102.0°F (2006) | 44.1°F (2005) | 0.00 in (1949) |
| September 14 | 102.0°F (2021) | 43.0°F (2005) | 0.01 in (2009) |
| September 15 | 95.0°F (2008) | 42.1°F (2017) | 0.00 in (1949) |
| September 16 | 95.0°F (2016) | 39.9°F (2006) | 0.74 in (2015) |
| September 17 | 98.1°F (2016) | 45.0°F (1949) | 0.05 in (2022) |
| September 18 | 100.0°F (1949) | 45.0°F (1949) | 1.89 in (2022) |
| September 19 | 100.0°F (2002) | 42.1°F (2008) | 0.37 in (2008) |
| September 20 | 102.9°F (1949) | 41.0°F (2004) | 0.07 in (2013) |
| September 21 | 104.0°F (2003) | 41.0°F (2017) | 0.22 in (2013) |
| September 22 | 105.1°F (2003) | 39.9°F (2017) | 0.02 in (2017) |
| September 23 | 102.9°F (2009) | 39.9°F (2017) | 0.02 in (2007) |
| September 24 | 102.9°F (2019) | 39.9°F (2005) | 0.32 in (2014) |
| September 25 | 104.0°F (2009) | 39.0°F (2005) | 0.07 in (2014) |
| September 26 | 109.0°F (2009) | 37.9°F (2013) | 0.22 in (2014) |
| September 27 | 107.1°F (2009) | 39.9°F (2013) | 0.00 in (1949) |
| September 28 | 102.9°F (2010) | 44.1°F (2013) | 0.00 in (1949) |
| September 29 | 104.0°F (2010) | 39.0°F (2007) | 0.42 in (2025) |
| September 30 | 102.0°F (2020) | 39.0°F (2007) | 0.18 in (2025) |