Rochester, Sunday, 9 August, 00:23
Partly cloudy. Feels like 74°. High 86°, low 67°.
In September, Rochester, NY averages a high of 70.7° and a low of 57.5°. About 3.8 inches of precipitation fall over the month (11 wet days). The record high is 93.2° (2018) and the record low 38.5° (2000). Normals are computed over the last 60 years.
| Day | High | Low | Chance of precip. | Record high | Record low |
|---|---|---|---|---|---|
| 1 | 74.8° | 61.5° | 23% | 90° (2010) | 51.6° (2009) |
| 2 | 75.2° | 61.5° | 40% | 86.5° (2010) | 47.3° (2017) |
| 3 | 75.2° | 61.5° | 32% | 89.6° (2010) | 48.4° (1976) |
| 4 | 74.3° | 61.7° | 30% | 88.9° (1973) | 49.5° (1987) |
| 5 | 74.8° | 61.2° | 35% | 93.2° (2018) | 51.4° (1963) |
| 6 | 74.8° | 61.2° | 35% | 88.3° (2023) | 50° (1984) |
| 7 | 74.3° | 60.6° | 45% | 91.6° (2007) | 48.2° (1984) |
| 8 | 72.9° | 60.6° | 42% | 87.6° (1960) | 48.7° (2024) |
| 9 | 72.5° | 59.7° | 38% | 88° (2002) | 49.1° (2025) |
| 10 | 72.3° | 59.2° | 37% | 89.4° (2016) | 47.5° (1975) |
| 11 | 71.8° | 58.3° | 32% | 88.2° (1961) | 47.5° (2017) |
| 12 | 72.7° | 58.1° | 35% | 82.9° (2005) | 48.7° (1963) |
| 13 | 72.3° | 58.8° | 45% | 88.7° (1961) | 45.3° (1963) |
| 14 | 71.4° | 58.8° | 40% | 89.4° (1961) | 45.1° (1963) |
| 15 | 69.8° | 57.2° | 37% | 86.2° (1991) | 46.2° (1975) |
| 16 | 68.7° | 56.7° | 32% | 88.5° (1991) | 43° (1964) |
| 17 | 70.5° | 56.5° | 40% | 83.8° (2018) | 46.8° (1990) |
| 18 | 69.8° | 57° | 37% | 83.5° (1991) | 46° (1990) |
| 19 | 69.3° | 56.3° | 38% | 83.1° (1965) | 46° (2020) |
| 20 | 71.1° | 56.3° | 33% | 86.4° (1983) | 41.9° (2020) |
| 21 | 70.9° | 56.3° | 35% | 86.5° (2018) | 41.4° (2020) |
| 22 | 68.9° | 56.1° | 52% | 87.3° (1965) | 44.6° (2020) |
| 23 | 66.7° | 54.7° | 53% | 85.1° (2017) | 43.7° (1974) |
| 24 | 66.4° | 53.6° | 30% | 86.2° (1970) | 40.8° (1974) |
| 25 | 67.5° | 54.1° | 30% | 87.4° (2007) | 43.3° (1989) |
| 26 | 68.4° | 54.7° | 43% | 86.9° (2017) | 45.1° (1966) |
| 27 | 68° | 55° | 43% | 89.8° (2017) | 41.7° (1965) |
| 28 | 66° | 54.3° | 42% | 81.3° (2020) | 41.2° (1989) |
| 29 | 65.1° | 52.5° | 47% | 79.2° (1986) | 38.5° (2000) |
| 30 | 64.2° | 51.8° | 33% | 78.4° (1961) | 40.5° (1991) |