September weather in Altamonte Springs, FL
The average temperature in Altamonte Springs in September is 81.7°F (73.9°F–89.5°F). Average precipitation: 6.55 inches.
September is a fall month in Altamonte Springs, and is warmer than the annual average of 73.8°F. Daily temperatures swing about 15.6°F between overnight low and afternoon high. Expect about 15 days with precipitation. Daylight averages about 12h 10m. For travel, September is a wet month.
Avg High
89.5°F
Avg Low
73.9°F
Precipitation
6.55 in
Daylight
12h 10m
September records in Altamonte Springs
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 96.1°F (1907) | 64.9°F (1938) | 1.75 in (1964) |
| September 2 | 98.1°F (1918) | 64.0°F (1893) | 2.38 in (1941) |
| September 3 | 97.0°F (1912) | 60.1°F (1934) | 1.45 in (1905) |
| September 4 | 97.0°F (1904) | 64.9°F (1909) | 2.50 in (2002) |
| September 5 | 99.0°F (1917) | 64.0°F (1893) | 7.72 in (1933) |
| September 6 | 100.0°F (1921) | 62.1°F (1893) | 3.61 in (1933) |
| September 7 | 100.0°F (1921) | 62.1°F (1893) | 2.52 in (1960) |
| September 8 | 102.9°F (1921) | 64.0°F (1893) | 3.47 in (1968) |
| September 9 | 99.0°F (1921) | 64.0°F (1893) | 2.73 in (1964) |
| September 10 | 97.0°F (1921) | 62.1°F (1893) | 6.95 in (2017) |
| September 11 | 98.1°F (1920) | 61.0°F (1893) | 4.38 in (1897) |
| September 12 | 98.1°F (1936) | 62.1°F (1893) | 2.40 in (1903) |
| September 13 | 98.1°F (1920) | 64.0°F (1893) | 1.54 in (1937) |
| September 14 | 98.1°F (1920) | 64.0°F (1938) | 3.06 in (2001) |
| September 15 | 99.0°F (1920) | 63.0°F (1956) | 2.88 in (2008) |
| September 16 | 97.0°F (1929) | 64.0°F (1932) | 8.43 in (1945) |
| September 17 | 97.0°F (1892) | 61.0°F (1932) | 4.15 in (1961) |
| September 18 | 98.1°F (1933) | 63.0°F (1962) | 3.27 in (1946) |
| September 19 | 97.0°F (1933) | 57.9°F (1910) | 3.47 in (1913) |
| September 20 | 96.1°F (1919) | 50.0°F (1910) | 7.01 in (1897) |
| September 21 | 97.0°F (1919) | 52.0°F (1897) | 2.61 in (1969) |
| September 22 | 96.1°F (1933) | 57.0°F (1897) | 4.72 in (1948) |
| September 23 | 98.1°F (1919) | 61.0°F (1913) | 2.54 in (1963) |
| September 24 | 98.1°F (1919) | 60.1°F (1916) | 1.59 in (1939) |
| September 25 | 98.1°F (1919) | 62.1°F (1914) | 3.35 in (1908) |
| September 26 | 95.0°F (1921) | 61.0°F (1918) | 4.92 in (1973) |
| September 27 | 97.0°F (1921) | 55.9°F (1956) | 4.49 in (1901) |
| September 28 | 98.1°F (1921) | 59.0°F (1931) | 6.74 in (2022) |
| September 29 | 96.1°F (1921) | 59.0°F (1931) | 5.39 in (2022) |
| September 30 | 96.1°F (1921) | 59.0°F (1896) | 1.95 in (1912) |