Last updated: June 24, 2025
In September, the average temperature in Cullowhee, United States is a pleasant 19°C (66°F). You can expect a range from a chilly 3°C (38°F) to a warm 30°C (86°F). Be prepared for about 124 mm (4.9 in) of rainfall spread over 11 days, contributing to an average humidity of 76%.
In September in Cullowhee, the average temperature is 19°C (66°F), with maximums reaching 30°C (86°F) and minimums dropping as low as 3°C (38°F). This makes it an ideal time for travelers who enjoy mild weather and the potential for warm sunny days.
In Cullowhee in September, the precipitation amount is 124 mm (4.9 in) over the course of 11 days.
In Cullowhee in September, humidity is 76%. With an average temperature of 19°C (66°F), this humidity feels like a warm, thick blanket wrapping around you, making travel mildly uncomfortable and encouraging frequent breaks in shaded or air-conditioned areas.
In Cullowhee in September, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Cullowhee.
UV Risk Categories
Weather in Cullowhee varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Cullowhee, focusing on differences in temperature, rainfall, humidity, and UV levels.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | 3°C (37°F) | 111 mm (4.4 inches) | 86% | moderate |
February Weather | 6°C (43°F) | 174 mm (6.9 inches) | 86% | high |
March Weather | 8°C (47°F) | 135 mm (5.3 inches) | 86% | very high |
April Weather | 12°C (54°F) | 136 mm (5.3 inches) | 82% | extreme |
May Weather | 16°C (62°F) | 131 mm (5.1 inches) | 85% | extreme |
June Weather | 19°C (67°F) | 95 mm (3.8 inches) | 85% | extreme |
July Weather | 21°C (70°F) | 100 mm (4.0 inches) | 83% | extreme |
August Weather | 21°C (69°F) | 128 mm (5.1 inches) | 76% | extreme |
September Weather | 19°C (66°F) | 124 mm (4.9 inches) | 76% | very high |
October Weather | 14°C (58°F) | 150 mm (5.9 inches) | 80% | very high |
November Weather | 7°C (45°F) | 93 mm (3.7 inches) | 88% | high |
December Weather | 5°C (41°F) | 143 mm (5.6 inches) | 88% | moderate |