September weather in Clewiston, FL
The average temperature in Clewiston in September is 81.4°F (72.9°F–90.0°F). Average precipitation: 6.20 inches.
September is a fall month in Clewiston, and is warmer than the annual average of 74°F. Daily temperatures swing about 17.1°F between overnight low and afternoon high. Expect about 13 days with precipitation. Daylight averages about 12h 9m. For travel, September is a wet month.
Avg High
90.0°F
Avg Low
72.9°F
Precipitation
6.20 in
Daylight
12h 9m
September records in Clewiston
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 95.0°F (2009) | 71.1°F (2004) | 1.70 in (2011) |
| September 2 | 95.0°F (2008) | 71.1°F (2010) | 2.00 in (2009) |
| September 3 | 95.0°F (2010) | 69.1°F (2014) | 1.15 in (2003) |
| September 4 | 95.0°F (2008) | 69.1°F (2014) | 0.64 in (2006) |
| September 5 | 97.0°F (2010) | 70.0°F (2014) | 1.85 in (2012) |
| September 6 | 98.1°F (2011) | 69.1°F (2008) | 1.30 in (2009) |
| September 7 | 95.0°F (2011) | 69.1°F (2007) | 0.97 in (2012) |
| September 8 | 93.9°F (2009) | 70.0°F (2014) | 0.50 in (2011) |
| September 9 | 97.0°F (2011) | 69.1°F (2014) | 1.50 in (2004) |
| September 10 | 95.0°F (2011) | 69.1°F (2014) | 1.80 in (2011) |
| September 11 | 99.0°F (2011) | 69.1°F (2014) | 0.60 in (2005) |
| September 12 | 97.0°F (2010) | 70.0°F (2003) | 0.90 in (2012) |
| September 13 | 97.0°F (2010) | 69.1°F (2005) | 0.65 in (2009) |
| September 14 | 97.0°F (2010) | 68.0°F (2014) | 0.60 in (2012) |
| September 15 | 95.0°F (2008) | 69.1°F (2005) | 0.10 in (2006) |
| September 16 | 93.9°F (2009) | 70.0°F (2003) | 0.50 in (2006) |
| September 17 | 95.0°F (2009) | 69.1°F (2005) | 2.14 in (2015) |
| September 18 | 95.0°F (2008) | 69.1°F (2014) | 0.60 in (2012) |
| September 19 | 95.0°F (2012) | 70.0°F (2004) | 1.50 in (2011) |
| September 20 | 96.1°F (2009) | 69.1°F (2007) | 0.45 in (2006) |
| September 21 | 95.0°F (2011) | 69.1°F (2007) | 1.30 in (2004) |
| September 22 | 97.0°F (2011) | 69.1°F (2006) | 0.54 in (2014) |
| September 23 | 96.1°F (2008) | 69.1°F (2014) | 0.50 in (2012) |
| September 24 | 93.9°F (2011) | 68.0°F (2004) | 1.89 in (2002) |
| September 25 | 95.0°F (2010) | 70.0°F (2013) | 1.62 in (2015) |
| September 26 | 96.1°F (2009) | 68.0°F (2008) | 1.90 in (2011) |
| September 27 | 96.1°F (2010) | 68.0°F (2008) | 1.70 in (2014) |
| September 28 | 95.0°F (2010) | 69.1°F (2007) | 0.44 in (2003) |
| September 29 | 93.9°F (2011) | 64.0°F (2006) | 0.45 in (2003) |
| September 30 | 96.1°F (2009) | 63.0°F (2006) | 1.15 in (2003) |