September weather in Ione, CA
The average temperature in Ione in September is 73.1°F (59.5°F–86.7°F). Average precipitation: 0.26 inches.
September is a fall month in Ione, and is warmer than the annual average of 61°F. Daily temperatures swing about 27.2°F between overnight low and afternoon high. Daylight averages about 12h 14m. For travel, September is a comfortable month to visit.
Avg High
86.7°F
Avg Low
59.5°F
Precipitation
0.26 in
Daylight
12h 14m
September records in Ione
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 102.0°F (1998) | 52.0°F (2008) | 0.08 in (1964) |
| September 2 | 105.1°F (2017) | 50.0°F (2012) | 0.74 in (2000) |
| September 3 | 107.1°F (2017) | 51.1°F (1999) | 0.65 in (1946) |
| September 4 | 105.1°F (2017) | 50.0°F (2000) | 0.25 in (2023) |
| September 5 | 98.1°F (2008) | 51.1°F (2015) | 0.89 in (1978) |
| September 6 | 100.0°F (2020) | 53.1°F (2002) | 0.54 in (1978) |
| September 7 | 107.1°F (2020) | 45.0°F (2002) | 0.04 in (1965) |
| September 8 | 102.9°F (2020) | 50.0°F (2002) | 0.10 in (1969) |
| September 9 | 98.1°F (1998) | 46.9°F (2010) | 0.00 in (1944) |
| September 10 | 100.0°F (2004) | 48.9°F (1998) | 0.56 in (1978) |
| September 11 | 95.0°F (2004) | 48.0°F (2005) | 0.55 in (1952) |
| September 12 | 102.0°F (2015) | 50.0°F (2005) | 0.04 in (1976) |
| September 13 | 96.1°F (2014) | 51.1°F (2005) | 0.27 in (1963) |
| September 14 | 99.0°F (2014) | 48.0°F (2005) | 0.06 in (1968) |
| September 15 | 100.0°F (2014) | 46.9°F (2006) | 0.06 in (1955) |
| September 16 | 95.0°F (2012) | 48.0°F (2006) | 0.00 in (1944) |
| September 17 | 97.0°F (2025) | 48.0°F (2008) | 1.00 in (1946) |
| September 18 | 93.9°F (2000) | 46.0°F (2004) | 0.04 in (1950) |
| September 19 | 97.0°F (2000) | 44.1°F (2019) | 0.46 in (1950) |
| September 20 | 99.0°F (2000) | 44.1°F (2004) | 0.35 in (2022) |
| September 21 | 99.0°F (2000) | 46.0°F (2004) | 0.39 in (1944) |
| September 22 | 98.1°F (2015) | 46.0°F (2013) | 0.87 in (2013) |
| September 23 | 96.1°F (2002) | 46.9°F (2013) | 0.22 in (1973) |
| September 24 | 93.9°F (2002) | 48.9°F (2017) | 0.03 in (1973) |
| September 25 | 96.1°F (2025) | 48.9°F (1998) | 0.06 in (1973) |
| September 26 | 93.9°F (2010) | 50.0°F (1998) | 0.94 in (1972) |
| September 27 | 95.0°F (2008) | 48.9°F (2002) | 1.14 in (1972) |
| September 28 | 99.0°F (2010) | 44.1°F (2013) | 0.08 in (1961) |
| September 29 | 100.0°F (2010) | 44.1°F (2019) | 0.34 in (1998) |
| September 30 | 99.0°F (2010) | 43.0°F (2019) | 0.49 in (1971) |