Last updated: June 24, 2025
In September, the average temperature in Brownville, United States is a mild 16°C (61°F), though it can swing from a chilly 1°C (34°F) to a warm 33°C (91°F). Expect about 84 mm (3.3 in) of precipitation spread over 8 days, contributing to an average humidity of 77%. Prepare accordingly for a month that beautifully balances warmth and occasional rain!
In September, in Brownville, the average temperature is 16°C (61°F). The maximum can reach 33°C (91°F), while the minimum can dip as low as 1°C (34°F). Travelers should be prepared for a wide range of temperatures and pack accordingly.
In Brownville in September, the precipitation amount is 84 mm (3.3 in) spread over 8 days.
In Brownville in September humidity is 77%. With an average temperature of 16°C (61°F), this humidity feels like a slight heaviness in the air, making every step feel a touch more effortful while traveling. The dampness clings to your skin, adding a layer of discomfort, yet the mild temperature invites you to explore the surroundings, blending the challenge of the humidity with an opportunity for a refreshing adventure.
In Brownville 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 Brownville.
UV Risk Categories
Weather in Brownville varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Brownville, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -7°C (19°F) | 92 mm (3.6 inches) | 88% | low |
| February Weather | -6°C (21°F) | 85 mm (3.3 inches) | 88% | moderate |
| March Weather | -2°C (29°F) | 77 mm (3.0 inches) | 85% | moderate |
| April Weather | 5°C (42°F) | 132 mm (5.2 inches) | 81% | high |
| May Weather | 12°C (54°F) | 100 mm (3.9 inches) | 76% | very high |
| June Weather | 18°C (64°F) | 83 mm (3.3 inches) | 74% | very high |
| July Weather | 21°C (69°F) | 102 mm (4.0 inches) | 74% | very high |
| August Weather | 20°C (68°F) | 89 mm (3.5 inches) | 74% | very high |
| September Weather | 16°C (61°F) | 84 mm (3.3 inches) | 77% | high |
| October Weather | 9°C (49°F) | 135 mm (5.3 inches) | 82% | moderate |
| November Weather | 2°C (35°F) | 120 mm (4.7 inches) | 85% | moderate |
| December Weather | -5°C (24°F) | 119 mm (4.7 inches) | 84% | low |