Last updated: June 24, 2025
In September, the average temperature in Vernon, United States hovers around 18°C (65°F). However, don't be surprised by the extremes, as temperatures can dip to a chilly 0°C (33°F) or rise to a scorching 34°C (94°F). Expect about 92 mm (3.6 in) of precipitation over 10 days, with the air feeling quite humid at an average of 80%. Be prepared for a mix of conditions!
In September in Vernon, the average temperature is 18°C (65°F). The maximum can reach 34°C (94°F) and the minimum can be as low as 0°C (33°F). This diverse temperature range makes Vernon a perfect destination for travelers seeking both warm and cool experiences.
In Vernon in September, the total precipitation amount is 92 mm (3.6 in), which falls over the course of 10 days.
In Vernon in September, humidity is 80%. With an average temperature of 18°C (65°F), this humidity feels like wandering through a warm, damp blanket, making every step slightly heavy and resulting in a constant sheen of sweat, which can be both refreshing and exhausting for travelers.
In Vernon 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 Vernon.
UV Risk Categories
Weather in Vernon varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Vernon, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -4°C (26°F) | 62 mm (2.4 inches) | 88% | low |
| February Weather | -3°C (27°F) | 65 mm (2.6 inches) | 87% | moderate |
| March Weather | 2°C (36°F) | 64 mm (2.5 inches) | 85% | moderate |
| April Weather | 8°C (46°F) | 90 mm (3.5 inches) | 86% | very high |
| May Weather | 15°C (60°F) | 110 mm (4.3 inches) | 80% | very high |
| June Weather | 21°C (70°F) | 109 mm (4.3 inches) | 80% | very high |
| July Weather | 23°C (74°F) | 76 mm (3.0 inches) | 80% | very high |
| August Weather | 22°C (72°F) | 77 mm (3.0 inches) | 80% | very high |
| September Weather | 18°C (65°F) | 92 mm (3.6 inches) | 80% | high |
| October Weather | 12°C (53°F) | 112 mm (4.4 inches) | 84% | moderate |
| November Weather | 3°C (38°F) | 65 mm (2.5 inches) | 89% | moderate |
| December Weather | 0°C (32°F) | 56 mm (2.2 inches) | 86% | low |