September weather in San Diego, TX
The average temperature in San Diego in September is 82.7°F (72.9°F–92.6°F). Average precipitation: 5.26 inches.
September is a fall month in San Diego, and is warmer than the annual average of 74°F. Daily temperatures swing about 19.7°F between overnight low and afternoon high. Expect about 5 days with precipitation. Daylight averages about 12h 9m. For travel, September is a wet month.
Avg High
92.6°F
Avg Low
72.9°F
Precipitation
5.26 in
Daylight
12h 9m
September records in San Diego
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 105.1°F (1927) | 64.9°F (1915) | 1.42 in (1925) |
| September 2 | 106.0°F (1941) | 69.1°F (1920) | 3.60 in (1984) |
| September 3 | 106.0°F (2000) | 59.0°F (1919) | 1.00 in (2005) |
| September 4 | 106.0°F (2000) | 60.1°F (1974) | 3.02 in (1953) |
| September 5 | 107.1°F (2000) | 57.9°F (1934) | 2.00 in (1960) |
| September 6 | 109.9°F (2000) | 57.0°F (1974) | 3.65 in (1935) |
| September 7 | 102.0°F (1922) | 60.1°F (1974) | 5.05 in (1955) |
| September 8 | 100.9°F (1911) | 61.0°F (1957) | 2.07 in (1979) |
| September 9 | 102.0°F (1940) | 60.1°F (1918) | 5.23 in (2002) |
| September 10 | 102.0°F (1937) | 55.9°F (1934) | 2.21 in (1941) |
| September 11 | 105.1°F (1937) | 63.0°F (1918) | 2.02 in (2006) |
| September 12 | 102.9°F (1930) | 62.1°F (1943) | 12.14 in (1971) |
| September 13 | 102.0°F (1912) | 59.0°F (1940) | 1.70 in (2006) |
| September 14 | 102.9°F (1930) | 61.0°F (1940) | 2.65 in (1973) |
| September 15 | 102.0°F (1930) | 60.1°F (1913) | 10.50 in (1919) |
| September 16 | 100.0°F (1920) | 60.1°F (1979) | 1.72 in (2002) |
| September 17 | 102.0°F (1920) | 59.0°F (1934) | 4.00 in (2002) |
| September 18 | 100.0°F (1911) | 55.0°F (1981) | 2.85 in (2006) |
| September 19 | 100.9°F (1924) | 52.0°F (1981) | 5.75 in (1979) |
| September 20 | 102.9°F (1932) | 53.1°F (1981) | 1.45 in (1918) |
| September 21 | 102.9°F (1926) | 48.9°F (1913) | 8.05 in (1967) |
| September 22 | 105.1°F (1926) | 51.1°F (1913) | 2.70 in (1995) |
| September 23 | 104.0°F (1920) | 53.1°F (1983) | 4.97 in (1957) |
| September 24 | 100.9°F (1912) | 55.0°F (1924) | 2.15 in (1932) |
| September 25 | 104.0°F (2005) | 55.0°F (1914) | 5.43 in (1935) |
| September 26 | 105.1°F (2005) | 54.0°F (1975) | 2.70 in (1913) |
| September 27 | 100.9°F (2005) | 46.9°F (1942) | 2.02 in (1980) |
| September 28 | 100.9°F (1938) | 45.0°F (1942) | 2.07 in (1958) |
| September 29 | 105.1°F (2005) | 45.0°F (1942) | 2.30 in (1999) |
| September 30 | 100.9°F (1938) | 50.0°F (1924) | 3.60 in (1988) |