September weather in Williams, AZ
The average temperature in Williams in September is 61.5°F (46.6°F–76.4°F). Average precipitation: 1.59 inches.
September is a fall month in Williams, and is warmer than the annual average of 50.2°F. Daily temperatures swing about 29.8°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 12h 13m. For travel, September is a comfortable month to visit.
Avg High
76.4°F
Avg Low
46.6°F
Precipitation
1.59 in
Daylight
12h 13m
September records in Williams
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 93.0°F (1929) | 35.1°F (1926) | 1.08 in (1960) |
| September 2 | 93.0°F (1948) | 32.0°F (1929) | 1.09 in (1922) |
| September 3 | 93.0°F (1948) | 33.1°F (1932) | 1.30 in (1994) |
| September 4 | 91.0°F (2020) | 34.0°F (1944) | 1.32 in (2004) |
| September 5 | 91.9°F (2020) | 36.0°F (1921) | 2.11 in (1939) |
| September 6 | 93.0°F (2020) | 33.1°F (1936) | 1.90 in (1950) |
| September 7 | 91.9°F (2020) | 36.0°F (1921) | 1.54 in (1939) |
| September 8 | 90.0°F (2020) | 30.9°F (1935) | 0.70 in (1972) |
| September 9 | 89.1°F (1944) | 30.9°F (2020) | 1.58 in (1924) |
| September 10 | 90.0°F (1910) | 30.0°F (2020) | 1.50 in (2009) |
| September 11 | 89.1°F (1910) | 30.0°F (1920) | 0.93 in (1927) |
| September 12 | 87.1°F (1944) | 30.0°F (1916) | 1.93 in (1897) |
| September 13 | 90.0°F (1944) | 23.0°F (1930) | 1.70 in (1941) |
| September 14 | 89.1°F (1932) | 28.9°F (1930) | 1.90 in (1931) |
| September 15 | 89.1°F (1929) | 28.0°F (1903) | 0.58 in (2014) |
| September 16 | 90.0°F (1928) | 30.0°F (1903) | 1.02 in (1925) |
| September 17 | 88.0°F (1928) | 32.0°F (1903) | 1.10 in (1961) |
| September 18 | 87.1°F (1937) | 34.0°F (1903) | 2.71 in (1965) |
| September 19 | 89.1°F (1913) | 26.1°F (1907) | 1.20 in (2004) |
| September 20 | 90.0°F (1928) | 27.0°F (1978) | 1.73 in (2016) |
| September 21 | 87.1°F (1928) | 23.0°F (1931) | 1.05 in (1952) |
| September 22 | 88.0°F (1944) | 23.0°F (1925) | 0.36 in (2007) |
| September 23 | 90.0°F (1943) | 25.0°F (1923) | 2.27 in (1983) |
| September 24 | 90.0°F (1944) | 21.9°F (1978) | 1.51 in (1983) |
| September 25 | 84.9°F (1921) | 26.1°F (2017) | 0.75 in (1943) |
| September 26 | 84.9°F (1921) | 10.9°F (1934) | 1.66 in (1997) |
| September 27 | 88.0°F (2024) | 21.9°F (1908) | 1.50 in (2014) |
| September 28 | 88.0°F (2024) | 21.0°F (1934) | 0.94 in (2021) |
| September 29 | 86.0°F (1933) | 21.9°F (1915) | 1.45 in (1971) |
| September 30 | 87.1°F (2024) | 26.1°F (1945) | 1.31 in (1937) |