Last updated: June 24, 2025
In September, the average temperature in Newark Valley, United States hovers around 17°C (63°F). Expect a range of -1°C (30°F) as the minimum to 32°C (90°F) as the maximum. During this month, you'll experience about 104 mm (4.1 in) of precipitation over 9 days, adding to a notably high average humidity of 78%.
In September in Newark Valley, the average temperature is 17°C (63°F). Maximums can reach 32°C (90°F) and minimums can drop to as low as -1°C (30°F). Travelers should be prepared for a wide range of temperatures and pack accordingly for both warm days and cool nights.
In Newark Valley in September, the precipitation amount is 104 mm (4.1 in) over the course of 9 days.
In Newark Valley in September, humidity is 78%. With an average temperature of 17°C (63°F), this humidity feels like a warm, enveloping blanket, making traveling slightly uncomfortable as you navigate the sticky air, prompting the need for frequent breaks in cooler, shaded areas.
In Newark Valley 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 Newark Valley.
UV Risk Categories
Weather in Newark Valley varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Newark Valley, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -4°C (25°F) | 78 mm (3.1 inches) | 90% | moderate |
| February Weather | -2°C (28°F) | 91 mm (3.6 inches) | 90% | moderate |
| March Weather | 1°C (34°F) | 89 mm (3.5 inches) | 87% | high |
| April Weather | 8°C (46°F) | 126 mm (5.0 inches) | 88% | very high |
| May Weather | 14°C (58°F) | 136 mm (5.3 inches) | 82% | very high |
| June Weather | 19°C (66°F) | 106 mm (4.2 inches) | 79% | very high |
| July Weather | 22°C (71°F) | 151 mm (6.0 inches) | 78% | very high |
| August Weather | 21°C (70°F) | 117 mm (4.6 inches) | 76% | very high |
| September Weather | 17°C (63°F) | 104 mm (4.1 inches) | 78% | very high |
| October Weather | 11°C (53°F) | 150 mm (5.9 inches) | 84% | high |
| November Weather | 3°C (38°F) | 93 mm (3.7 inches) | 89% | moderate |
| December Weather | -1°C (31°F) | 96 mm (3.8 inches) | 86% | low |