Caldwell, Sunday, 9 August, 01:55
Mostly clear. Feels like 75°. High 90°, low 73°.
In September, Caldwell, NJ averages a high of 73.9° and a low of 58.7°. About 4.1 inches of precipitation fall over the month (9 wet days). The record high is 95.2° (2018) and the record low 39.7° (1963). Normals are computed over the last 60 years.
| Day | High | Low | Chance of precip. | Record high | Record low |
|---|---|---|---|---|---|
| 1 | 78.1° | 63° | 32% | 92.7° (2010) | 53.2° (2017) |
| 2 | 77.9° | 62.1° | 40% | 94.5° (1980) | 51.3° (2017) |
| 3 | 78.4° | 62.4° | 37% | 91° (2015) | 49.5° (1967) |
| 4 | 78.6° | 62.8° | 32% | 91.2° (2023) | 51.8° (1997) |
| 5 | 77.9° | 62.6° | 22% | 94.8° (2023) | 52.3° (1987) |
| 6 | 77.4° | 62.1° | 30% | 95.2° (2018) | 50.4° (1984) |
| 7 | 77.7° | 61.2° | 35% | 93.4° (2023) | 48° (2000) |
| 8 | 76.8° | 61° | 27% | 92.5° (2015) | 48.9° (1984) |
| 9 | 76.1° | 61° | 32% | 89.4° (2002) | 48° (1986) |
| 10 | 75.9° | 61.2° | 35% | 92.1° (1983) | 49.5° (1975) |
| 11 | 75.6° | 59.9° | 23% | 93.9° (1983) | 48.9° (1967) |
| 12 | 75.7° | 59.5° | 25% | 91.4° (2005) | 48.6° (1967) |
| 13 | 75.7° | 59.5° | 32% | 91.4° (2005) | 47.5° (1985) |
| 14 | 75.4° | 60.3° | 33% | 88.5° (2016) | 47.1° (1975) |
| 15 | 73.4° | 59° | 27% | 87.4° (2021) | 46.2° (1975) |
| 16 | 72.9° | 57.9° | 37% | 89.4° (1991) | 46° (1984) |
| 17 | 73.2° | 57.7° | 35% | 89.4° (1991) | 45° (1986) |
| 18 | 73° | 57.9° | 35% | 84.9° (1965) | 43.3° (1984) |
| 19 | 72.9° | 56.7° | 27% | 88.5° (1983) | 44.8° (1990) |
| 20 | 72.9° | 56.8° | 20% | 88.3° (1983) | 44.8° (1993) |
| 21 | 73° | 57.4° | 27% | 86.2° (1980) | 43° (1962) |
| 22 | 72.3° | 57.4° | 38% | 89.4° (1970) | 44.2° (1962) |
| 23 | 71.1° | 56.3° | 38% | 91.4° (1970) | 44.6° (1963) |
| 24 | 69.8° | 55.2° | 27% | 90.3° (2017) | 39.7° (1963) |
| 25 | 69.6° | 55.2° | 23% | 88.5° (1970) | 40.3° (1963) |
| 26 | 71.1° | 56.1° | 38% | 89.4° (2007) | 45.1° (1963) |
| 27 | 71.2° | 56.1° | 32% | 86.7° (1998) | 44.1° (1966) |
| 28 | 69.8° | 55.9° | 37% | 84° (2019) | 40.5° (1989) |
| 29 | 67.6° | 54.7° | 27% | 79.7° (2014) | 41.7° (2000) |
| 30 | 66.9° | 53.1° | 32% | 84.9° (1986) | 42.6° (1991) |