Last updated: June 24, 2025
In September, the average temperature in Triadelphia, United States hovers around 20°C (69°F). You'll experience a variety of temperatures, with a minimum of 5°C (41°F) and a maximum reaching 34°C (93°F). Be prepared for 113 mm (4.4 in) of precipitation spread across 10 days, and expect the air to be fairly humid with an average humidity of 73%.
In September in Triadelphia, the average temperature is 20°C (69°F). Maximums can reach 34°C (93°F), and minimums can be as low as 5°C (41°F). This makes it a great time to visit, as you can enjoy warm days while still experiencing cooler evenings.
In Triadelphia in September, the total precipitation amount is 113 mm (4.4 in) over a span of 10 days.
In Triadelphia in September humidity is 73%. With an average temperature of 20°C (69°F), this humidity feels like a warm embrace, making travel slightly sticky but ultimately comfortable as long as you stay hydrated and take breaks in the shade.
In Triadelphia 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 Triadelphia.
UV Risk Categories
Weather in Triadelphia varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Triadelphia, focusing on differences in temperature, rainfall, humidity, and UV levels.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | 0°C (32°F) | 92 mm (3.6 inches) | 88% | moderate |
February Weather | 2°C (36°F) | 117 mm (4.6 inches) | 88% | moderate |
March Weather | 6°C (43°F) | 116 mm (4.6 inches) | 88% | high |
April Weather | 11°C (52°F) | 139 mm (5.5 inches) | 86% | very high |
May Weather | 17°C (63°F) | 138 mm (5.4 inches) | 82% | very high |
June Weather | 21°C (71°F) | 156 mm (6.2 inches) | 84% | very high |
July Weather | 24°C (75°F) | 123 mm (4.9 inches) | 82% | very high |
August Weather | 23°C (73°F) | 89 mm (3.5 inches) | 73% | very high |
September Weather | 20°C (69°F) | 113 mm (4.4 inches) | 73% | very high |
October Weather | 14°C (58°F) | 118 mm (4.7 inches) | 81% | high |
November Weather | 6°C (43°F) | 89 mm (3.5 inches) | 89% | moderate |
December Weather | 3°C (37°F) | 112 mm (4.4 inches) | 86% | moderate |