Last updated: June 24, 2025
In Diamond Ridge, United States, the average temperature in September hovers around 10°C (50°F), with extremes that can dip to a chilly -2°C (29°F) or warm up to a pleasant 20°C (68°F). Expect a fair amount of rain, with 125 mm (4.9 in) of precipitation spread over approximately 16 days. The high 90% humidity adds to the overall atmosphere, making it a uniquely colorful experience to explore this destination during the month.
In September in Diamond Ridge, the average temperature is 10°C (50°F). Maximums can reach 20°C (68°F), while minimums can drop to as low as -2°C (29°F). Travelers should be prepared for a range of temperatures, ensuring both warm and cold clothing options are on hand.
In Diamond Ridge in September, the precipitation amount is 125 mm (4.9 in) spread over 16 days.
In Diamond Ridge in September humidity is 90%. With an average temperature of 10°C (50°F), this humidity feels like a chilly, damp blanket enveloping you, making traveling uncomfortable as the cool air mixed with high moisture can lead to persistent chilliness and a constant sense of being wet, even while walking around.
In Diamond Ridge in September, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Diamond Ridge for better planning.
UV Risk Categories
Weather in Diamond Ridge varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Diamond Ridge, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -6°C (21°F) | 89 mm (3.5 inches) | 92% | low |
| February Weather | -4°C (25°F) | 70 mm (2.8 inches) | 92% | low |
| March Weather | -3°C (27°F) | 59 mm (2.3 inches) | 86% | moderate |
| April Weather | 2°C (36°F) | 55 mm (2.2 inches) | 79% | moderate |
| May Weather | 8°C (46°F) | 98 mm (3.9 inches) | 87% | high |
| June Weather | 11°C (53°F) | 68 mm (2.7 inches) | 91% | high |
| July Weather | 14°C (58°F) | 76 mm (3.0 inches) | 92% | high |
| August Weather | 13°C (56°F) | 91 mm (3.6 inches) | 92% | high |
| September Weather | 10°C (50°F) | 125 mm (4.9 inches) | 90% | moderate |
| October Weather | 5°C (41°F) | 160 mm (6.3 inches) | 87% | low |
| November Weather | -2°C (29°F) | 131 mm (5.1 inches) | 91% | low |
| December Weather | -3°C (27°F) | 174 mm (6.8 inches) | 92% | low |