Last updated: June 24, 2025
In September, the average temperature in West Salem, United States is a pleasant 20°C (68°F), with potential lows of 4°C (40°F) and highs reaching up to 33°C (92°F). Visitors can expect 89 mm (3.5 in) of precipitation over approximately 11 days, accompanied by an average humidity level of 77%. Whether you’re exploring the outdoors or seeking cozy indoor activities, this month offers a delightful climate to enjoy!
In September, in West Salem, the average temperature is 20°C (68°F). Maximums can reach 33°C (92°F), and minimums can be as low as 4°C (40°F). It's advisable to pack layers to accommodate both warm days and cooler nights while enjoying your travels.
In West Salem in September, the precipitation amount is 89 mm (3.5 in) over a span of 11 days.
In West Salem in September, humidity is 77%. With an average temperature of 20°C (68°F), this humidity feels like a warm, sticky embrace, making it essential for travelers to stay hydrated and take breaks in shaded areas to avoid feeling sluggish in the heat.
In West Salem 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 West Salem.
UV Risk Categories
Weather in West Salem varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in West Salem, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -1°C (30°F) | 79 mm (3.1 inches) | 88% | moderate |
| February Weather | 0°C (33°F) | 93 mm (3.7 inches) | 88% | moderate |
| March Weather | 4°C (40°F) | 95 mm (3.8 inches) | 87% | high |
| April Weather | 10°C (50°F) | 126 mm (5.0 inches) | 87% | very high |
| May Weather | 17°C (62°F) | 119 mm (4.7 inches) | 81% | very high |
| June Weather | 21°C (71°F) | 130 mm (5.1 inches) | 83% | very high |
| July Weather | 24°C (75°F) | 123 mm (4.9 inches) | 82% | very high |
| August Weather | 22°C (72°F) | 90 mm (3.6 inches) | 76% | very high |
| September Weather | 20°C (68°F) | 89 mm (3.5 inches) | 77% | very high |
| October Weather | 14°C (57°F) | 100 mm (4.0 inches) | 82% | high |
| November Weather | 5°C (41°F) | 89 mm (3.5 inches) | 89% | moderate |
| December Weather | 2°C (35°F) | 89 mm (3.5 inches) | 86% | low |