Last updated: June 24, 2025
In September, the average temperature in Nelsonville, United States hovers around 19°C (67°F), with daily fluctuations that can range from a cool 4°C (39°F) to a warm 32°C (90°F). Expect 115 mm (4.5 in) of precipitation over 9 days, contributing to an average humidity of 68%. This blend of warmth and moisture creates a unique climate that balances comfort with occasional wet spells.
In September in Nelsonville, the average temperature is 19°C (67°F). Maximum temperatures can reach up to 32°C (90°F), while minimum temperatures can drop as low as 4°C (39°F). This variety in temperatures makes Nelsonville a great destination for travelers looking to experience both warm days and cool evenings.
In Nelsonville in September, the precipitation amount is 115 mm (4.5 in) over the course of 9 days, indicating a relatively wet period for the region.
In Nelsonville in September, humidity is 68%. With an average temperature of 19°C (67°F), this humidity feels like a warm, enveloping blanket, making travel pleasant yet slightly muggy, which can be refreshing while exploring but may require occasional breaks to stay comfortable.
In Nelsonville in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Nelsonville.
UV Risk Categories
Weather in Nelsonville varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Nelsonville, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -1°C (31°F) | 69 mm (2.7 inches) | 84% | moderate |
| February Weather | 1°C (33°F) | 95 mm (3.7 inches) | 82% | moderate |
| March Weather | 4°C (39°F) | 88 mm (3.5 inches) | 81% | high |
| April Weather | 10°C (50°F) | 118 mm (4.6 inches) | 78% | very high |
| May Weather | 15°C (60°F) | 119 mm (4.7 inches) | 69% | very high |
| June Weather | 20°C (69°F) | 95 mm (3.7 inches) | 69% | very high |
| July Weather | 24°C (75°F) | 129 mm (5.1 inches) | 62% | very high |
| August Weather | 23°C (73°F) | 121 mm (4.8 inches) | 65% | very high |
| September Weather | 19°C (67°F) | 115 mm (4.5 inches) | 68% | very high |
| October Weather | 14°C (57°F) | 141 mm (5.5 inches) | 74% | high |
| November Weather | 6°C (42°F) | 90 mm (3.5 inches) | 82% | moderate |
| December Weather | 1°C (35°F) | 102 mm (4.0 inches) | 80% | low |