Last updated: June 24, 2025
In Golden, United States, the average temperature in September hovers around 21°C (71°F). Expect a minimum of 6°C (44°F) and a maximum soaring up to 34°C (94°F). You'll experience 90 mm (3.5 in) of precipitation over approximately 7 days, accompanied by an average humidity level of 76%. Stay prepared for both warm days and the occasional shower!
In September in Golden, the average temperature is 21°C (71°F). Maximum temperatures can reach 34°C (94°F), while minimums can drop as low as 6°C (44°F). This weather makes Golden an ideal destination for travelers seeking pleasant temperatures, but also a reminder to prepare for a range of conditions.
In Golden in September, the precipitation amount is 90 mm (3.5 in) over the course of 7 days.
In Golden in September humidity is 76%. With an average temperature of 21°C (71°F), this humidity feels like a warm, enveloping blanket, making traveling both refreshing and a bit exhausting, as the air clings to your skin and you often find yourself reaching for water to stay hydrated.
In Golden 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 Golden.
UV Risk Categories
Weather in Golden varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Golden, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -2°C (28°F) | 62 mm (2.4 inches) | 82% | moderate |
| February Weather | -1°C (31°F) | 64 mm (2.5 inches) | 80% | moderate |
| March Weather | 6°C (44°F) | 123 mm (4.8 inches) | 80% | high |
| April Weather | 11°C (52°F) | 104 mm (4.1 inches) | 80% | very high |
| May Weather | 18°C (65°F) | 162 mm (6.4 inches) | 82% | very high |
| June Weather | 24°C (75°F) | 119 mm (4.7 inches) | 83% | extreme |
| July Weather | 26°C (78°F) | 88 mm (3.5 inches) | 81% | extreme |
| August Weather | 24°C (75°F) | 98 mm (3.9 inches) | 80% | very high |
| September Weather | 21°C (71°F) | 90 mm (3.5 inches) | 76% | very high |
| October Weather | 14°C (57°F) | 104 mm (4.1 inches) | 76% | high |
| November Weather | 5°C (42°F) | 59 mm (2.3 inches) | 85% | moderate |
| December Weather | 2°C (36°F) | 47 mm (1.9 inches) | 86% | moderate |