Last updated: June 24, 2025
In September, the average temperature in East Rochester, United States is a pleasant 18°C (65°F), with daily variations ranging from a chilly 3°C (38°F) to a warm 33°C (92°F). Expect 73 mm (2.9 in) of precipitation over 8 days, contributing to a relatively high average humidity of 76%. Prepare for a climate that blends warmth with refreshing moisture!
In September in East Rochester, the average temperature is 18°C (65°F). Maximum temperatures can reach 33°C (92°F), while minimums can drop as low as 3°C (38°F). This diverse temperature range makes East Rochester an interesting destination for travelers seeking both warm days and cooler nights.
In East Rochester in September, the precipitation amount is 73 mm (2.9 in) over a span of 8 days.
In East Rochester in September, humidity is 76%. With an average temperature of 18°C (65°F), this humidity feels like a warm embrace, making travel a little sticky but enjoyable, as long as you stay hydrated and take breaks in the shade.
In East Rochester in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in East Rochester.
UV Risk Categories
Weather in East Rochester varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in East Rochester, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -3°C (27°F) | 76 mm (3.0 inches) | 91% | low |
| February Weather | -2°C (29°F) | 79 mm (3.1 inches) | 91% | moderate |
| March Weather | 2°C (35°F) | 73 mm (2.9 inches) | 88% | moderate |
| April Weather | 8°C (46°F) | 112 mm (4.4 inches) | 88% | very high |
| May Weather | 15°C (59°F) | 109 mm (4.3 inches) | 82% | very high |
| June Weather | 20°C (68°F) | 83 mm (3.3 inches) | 79% | very high |
| July Weather | 23°C (73°F) | 140 mm (5.5 inches) | 77% | very high |
| August Weather | 22°C (71°F) | 95 mm (3.8 inches) | 72% | very high |
| September Weather | 18°C (65°F) | 73 mm (2.9 inches) | 76% | high |
| October Weather | 12°C (54°F) | 140 mm (5.5 inches) | 83% | moderate |
| November Weather | 4°C (40°F) | 84 mm (3.3 inches) | 88% | moderate |
| December Weather | 0°C (32°F) | 85 mm (3.3 inches) | 87% | low |