September weather in Gridley, CA
The average temperature in Gridley in September is 74.0°F (59.4°F–88.6°F). Average precipitation: 0.16 inches.
September is a fall month in Gridley, and is warmer than the annual average of 63.2°F. Daily temperatures swing about 29.2°F between overnight low and afternoon high. Expect about 1 days with precipitation. Daylight averages about 12h 15m. For travel, September is hot.
Avg High
88.6°F
Avg Low
59.4°F
Precipitation
0.16 in
Daylight
12h 15m
September records in Gridley
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 106.0°F (2017) | 52.0°F (1999) | 0.21 in (2000) |
| September 2 | 108.0°F (2022) | 55.0°F (1999) | 0.06 in (2025) |
| September 3 | 106.0°F (2017) | 57.0°F (1999) | 0.00 in (1998) |
| September 4 | 107.1°F (2022) | 51.1°F (2000) | 0.00 in (1998) |
| September 5 | 111.0°F (2022) | 48.9°F (2000) | 0.00 in (1998) |
| September 6 | 111.0°F (2022) | 55.0°F (2000) | 0.00 in (1998) |
| September 7 | 109.9°F (2022) | 51.1°F (2002) | 0.00 in (1998) |
| September 8 | 108.0°F (2022) | 52.0°F (2002) | 0.00 in (1998) |
| September 9 | 104.0°F (2022) | 52.0°F (2002) | 0.00 in (1998) |
| September 10 | 102.9°F (2015) | 52.0°F (2010) | 0.00 in (1998) |
| September 11 | 102.0°F (2015) | 55.9°F (2005) | 0.00 in (1998) |
| September 12 | 100.9°F (2014) | 53.1°F (2005) | 0.02 in (2022) |
| September 13 | 102.0°F (2014) | 53.1°F (2005) | 0.02 in (2009) |
| September 14 | 98.1°F (2003) | 52.0°F (2018) | 0.57 in (2009) |
| September 15 | 97.0°F (2014) | 53.1°F (2006) | 0.00 in (1998) |
| September 16 | 95.0°F (1998) | 48.0°F (2006) | 0.34 in (2019) |
| September 17 | 96.1°F (2000) | 52.0°F (2006) | 0.00 in (1998) |
| September 18 | 97.0°F (2009) | 52.0°F (2005) | 0.35 in (2022) |
| September 19 | 100.0°F (2000) | 51.1°F (2007) | 1.21 in (2022) |
| September 20 | 99.0°F (2000) | 50.0°F (2004) | 0.00 in (1998) |
| September 21 | 98.1°F (2015) | 48.0°F (2017) | 0.79 in (2013) |
| September 22 | 98.1°F (2003) | 50.0°F (2013) | 0.15 in (2007) |
| September 23 | 97.0°F (2002) | 50.0°F (2000) | 0.07 in (2007) |
| September 24 | 98.1°F (2024) | 48.9°F (2000) | 0.43 in (2001) |
| September 25 | 98.1°F (2016) | 48.9°F (2007) | 0.70 in (2014) |
| September 26 | 97.0°F (2009) | 48.9°F (2013) | 0.36 in (1998) |
| September 27 | 102.9°F (2020) | 48.0°F (2013) | 0.10 in (1998) |
| September 28 | 100.0°F (2024) | 48.9°F (2007) | 0.17 in (2007) |
| September 29 | 100.0°F (2010) | 43.0°F (2007) | 0.15 in (2023) |
| September 30 | 98.1°F (2020) | 48.0°F (2007) | 1.01 in (2023) |