Last updated: June 24, 2025
In September, the average temperature in Diablo Grande, United States is a pleasant 24°C (75°F). Temperatures can vary significantly, with a minimum of 9°C (48°F) and soaring up to a maximum of 42°C (109°F). Despite these extremes, you can expect little rain, with just 1 mm (0.1 in) of precipitation over 0 days. The average humidity hovers around a comfortable 55%, making it an inviting time to explore!
In September in Diablo Grande, the average temperature is 24°C (75°F). Maximums can reach 42°C (109°F), and minimums can be as low as 9°C (48°F). Be prepared for a wide range of temperatures if you're planning to travel during this time.
In Diablo Grande in September, the precipitation amount is 1 mm (0.1 in) during 0 days, indicating a very dry period.
In Diablo Grande in September humidity is 55%. With an average temperature of 24°C (75°F), this humidity feels like a warm embrace, making traveling both comfortable and energizing as you explore the vibrant surroundings.
In Diablo Grande in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Diablo Grande.
UV Risk Categories
Weather in Diablo Grande varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Diablo Grande, focusing on differences in temperature, rainfall, humidity, and UV levels.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | 10°C (50°F) | 93 mm (3.7 inches) | 82% | moderate |
February Weather | 11°C (52°F) | 72 mm (2.8 inches) | 84% | moderate |
March Weather | 13°C (55°F) | 80 mm (3.1 inches) | 82% | very high |
April Weather | 16°C (61°F) | 31 mm (1.2 inches) | 78% | very high |
May Weather | 20°C (68°F) | 18 mm (0.7 inches) | 71% | very high |
June Weather | 25°C (76°F) | 2 mm (0.1 inches) | 64% | extreme |
July Weather | 27°C (81°F) | 0 mm (0.0 inches) | 58% | extreme |
August Weather | 26°C (80°F) | 0 mm (0.0 inches) | 54% | very high |
September Weather | 24°C (75°F) | 1 mm (0.1 inches) | 55% | very high |
October Weather | 19°C (66°F) | 16 mm (0.6 inches) | 62% | high |
November Weather | 13°C (56°F) | 29 mm (1.1 inches) | 78% | moderate |
December Weather | 10°C (50°F) | 78 mm (3.1 inches) | 80% | moderate |