September weather in Lemon Grove, CA
The average temperature in Lemon Grove in September is 70.6°F (64.0°F–77.1°F). Average precipitation: 0.09 inches.
September is a fall month in Lemon Grove, and is warmer than the annual average of 63.3°F. Daily temperatures swing about 13.1°F between overnight low and afternoon high. Expect about 1 days with precipitation. Daylight averages about 12h 11m. For travel, September is one of the best months of the year to visit.
Avg High
77.1°F
Avg Low
64.0°F
Precipitation
0.09 in
Daylight
12h 11m
September records in Lemon Grove
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 91.9°F (2002) | 45.0°F (1999) | 0.00 in (1918) |
| September 2 | 96.1°F (1967) | 30.9°F (1999) | 0.04 in (1945) |
| September 3 | 96.1°F (2022) | 43.0°F (1999) | 0.03 in (1976) |
| September 4 | 108.0°F (1988) | 43.0°F (1999) | 0.89 in (1963) |
| September 5 | 102.9°F (2004) | 23.0°F (1999) | 1.19 in (1939) |
| September 6 | 102.0°F (2020) | 45.0°F (1999) | 0.67 in (1939) |
| September 7 | 95.0°F (2024) | 43.0°F (1999) | 0.04 in (1975) |
| September 8 | 105.1°F (1984) | 44.1°F (1999) | 0.25 in (1982) |
| September 9 | 99.0°F (2015) | 52.0°F (1927) | 0.20 in (1939) |
| September 10 | 93.9°F (2015) | 46.0°F (1999) | 0.67 in (1976) |
| September 11 | 93.9°F (1918) | 53.1°F (1930) | 0.62 in (1976) |
| September 12 | 98.1°F (1959) | 46.0°F (1999) | 0.02 in (2012) |
| September 13 | 86.0°F (1971) | 51.1°F (1939) | 0.27 in (1941) |
| September 14 | 93.0°F (2012) | 51.1°F (1952) | 0.05 in (1941) |
| September 15 | 100.0°F (2012) | 52.0°F (1954) | 0.10 in (2015) |
| September 16 | 95.0°F (1985) | 53.1°F (1933) | 0.25 in (1982) |
| September 17 | 93.0°F (1929) | 46.9°F (1933) | 0.35 in (1929) |
| September 18 | 93.0°F (1939) | 48.9°F (1925) | 0.61 in (1963) |
| September 19 | 93.9°F (1939) | 46.9°F (1925) | 0.50 in (1963) |
| September 20 | 97.0°F (2015) | 50.0°F (1925) | 0.31 in (2016) |
| September 21 | 105.1°F (1939) | 48.9°F (1925) | 0.14 in (2016) |
| September 22 | 99.0°F (1939) | 50.0°F (1944) | 0.49 in (1987) |
| September 23 | 93.0°F (1992) | 48.9°F (1941) | 0.20 in (1987) |
| September 24 | 102.0°F (1975) | 48.9°F (1920) | 0.45 in (1939) |
| September 25 | 100.0°F (1989) | 50.0°F (1920) | 1.20 in (1997) |
| September 26 | 100.9°F (2016) | 48.9°F (1923) | 0.13 in (1982) |
| September 27 | 108.0°F (1963) | 46.9°F (1948) | 0.03 in (2019) |
| September 28 | 98.1°F (1963) | 50.0°F (1936) | 0.04 in (1985) |
| September 29 | 96.1°F (1999) | 48.9°F (1925) | 0.62 in (1921) |
| September 30 | 96.1°F (1999) | 46.9°F (1919) | 0.98 in (1921) |