Last updated: June 24, 2025
In September, the average temperature in East Renton Highlands, United States hovers around 15°C (60°F), with fluctuations between a cool 4°C (40°F) and a warm 32°C (90°F). Visitors can expect approximately 115 mm (4.5 in) of precipitation over about 12 days, accompanied by a moderate average humidity of 62%. Whether you enjoy mild weather or sunny days, there's something for everyone!
In September in East Renton Highlands, the average temperature is 15°C (60°F). The maximum can reach 32°C (90°F) and the minimum can be as low as 4°C (40°F). This makes it an ideal time for travelers to enjoy a range of outdoor activities while being prepared for both warm and chilly moments.
In East Renton Highlands in September, the total precipitation amount is 115 mm (4.5 in) over a span of 12 days.
In East Renton Highlands in September, humidity is 62%. With an average temperature of 15°C (60°F), this humidity feels like a warm embrace, making it a bit muggy for traveling, yet pleasantly refreshing for leisurely strolls and outdoor exploration.
In East Renton Highlands 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 East Renton Highlands.
UV Risk Categories
Weather in East Renton Highlands varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in East Renton Highlands, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 5°C (40°F) | 199 mm (7.9 inches) | 86% | low |
| February Weather | 4°C (39°F) | 234 mm (9.2 inches) | 86% | moderate |
| March Weather | 7°C (44°F) | 152 mm (6.0 inches) | 87% | moderate |
| April Weather | 9°C (49°F) | 144 mm (5.7 inches) | 84% | high |
| May Weather | 13°C (55°F) | 85 mm (3.3 inches) | 81% | very high |
| June Weather | 16°C (60°F) | 78 mm (3.1 inches) | 82% | very high |
| July Weather | 18°C (65°F) | 28 mm (1.1 inches) | 79% | very high |
| August Weather | 18°C (65°F) | 23 mm (0.9 inches) | 63% | very high |
| September Weather | 15°C (60°F) | 115 mm (4.5 inches) | 62% | high |
| October Weather | 10°C (50°F) | 204 mm (8.1 inches) | 83% | moderate |
| November Weather | 7°C (45°F) | 217 mm (8.5 inches) | 89% | low |
| December Weather | 4°C (40°F) | 235 mm (9.3 inches) | 88% | low |