September weather in Newark, CA
The average temperature in Newark in September is 67.5°F (57.5°F–77.4°F). Average precipitation: 0.09 inches.
September is a fall month in Newark, and is warmer than the annual average of 59.9°F. Daily temperatures swing about 19.9°F between overnight low and afternoon high. Expect about 1 days with precipitation. Daylight averages about 12h 14m. For travel, September is one of the best months of the year to visit.
Avg High
77.4°F
Avg Low
57.5°F
Precipitation
0.09 in
Daylight
12h 14m
September records in Newark
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 91.9°F (1943) | 46.9°F (1943) | 0.00 in (1942) |
| September 2 | 104.0°F (2017) | 46.9°F (1947) | 0.06 in (2000) |
| September 3 | 105.1°F (2017) | 48.0°F (1947) | 0.03 in (1985) |
| September 4 | 99.0°F (1950) | 45.0°F (1954) | 0.00 in (1942) |
| September 5 | 97.0°F (1961) | 45.0°F (1948) | 0.00 in (1942) |
| September 6 | 100.9°F (2020) | 46.0°F (1948) | 0.02 in (1953) |
| September 7 | 100.0°F (2020) | 45.0°F (1951) | 0.07 in (1991) |
| September 8 | 96.1°F (1957) | 46.0°F (1947) | 0.05 in (1969) |
| September 9 | 98.1°F (1984) | 45.0°F (1947) | 0.31 in (1985) |
| September 10 | 100.9°F (1944) | 46.0°F (1947) | 0.05 in (1978) |
| September 11 | 93.0°F (2015) | 43.0°F (1948) | 0.00 in (1942) |
| September 12 | 99.0°F (1979) | 42.1°F (1942) | 0.17 in (2017) |
| September 13 | 100.0°F (1979) | 43.0°F (1948) | 0.00 in (1942) |
| September 14 | 102.9°F (1971) | 45.0°F (1944) | 0.27 in (2009) |
| September 15 | 102.0°F (1971) | 44.1°F (1944) | 0.00 in (1942) |
| September 16 | 102.0°F (1971) | 45.0°F (1944) | 0.14 in (2019) |
| September 17 | 93.9°F (1968) | 43.0°F (1946) | 0.38 in (1989) |
| September 18 | 91.9°F (1984) | 43.0°F (1944) | 0.75 in (1959) |
| September 19 | 95.0°F (2000) | 43.0°F (1947) | 0.35 in (1977) |
| September 20 | 96.1°F (2000) | 42.1°F (1944) | 0.21 in (2004) |
| September 21 | 97.0°F (1943) | 45.0°F (1947) | 0.04 in (2005) |
| September 22 | 99.0°F (1943) | 42.1°F (1947) | 0.50 in (2013) |
| September 23 | 98.1°F (1943) | 42.1°F (1945) | 0.12 in (2007) |
| September 24 | 93.0°F (1997) | 43.0°F (1945) | 0.37 in (1982) |
| September 25 | 96.1°F (1954) | 45.0°F (1944) | 0.39 in (2014) |
| September 26 | 93.0°F (1960) | 42.1°F (1947) | 0.24 in (1982) |
| September 27 | 96.1°F (1958) | 39.9°F (1948) | 0.58 in (1972) |
| September 28 | 98.1°F (2020) | 43.0°F (1947) | 0.06 in (1976) |
| September 29 | 95.0°F (2010) | 42.1°F (1942) | 0.56 in (1976) |
| September 30 | 93.9°F (1946) | 42.1°F (1955) | 0.59 in (1983) |