Last updated: June 24, 2025
In September, the average temperature in Saint George, United States hovers around 17°C (62°F). Expect minimums of 6°C (43°F) and occasional highs reaching 29°C (84°F). With an average humidity of 80%, the weather can feel quite humid. Be prepared for 85 mm (3.3 in) of precipitation over about 7 days, making it a month where both sunshine and showers are likely!
In September in Saint George, the average temperature is 17°C (62°F). Maximums can reach 29°C (84°F), and minimums can be as low as 6°C (43°F). This makes it a great time for travelers to enjoy a mix of warm days and cooler evenings.
In Saint George in September, the total precipitation amount is 85 mm (3.3 in) over the course of 7 days.
In Saint George in September, humidity is 80%. With an average temperature of 17°C (62°F), this humidity feels like a heavy blanket wrapping around you, making travel sticky and uncomfortable, and often leaving you longing for a refreshing breeze.
In Saint George 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 Saint George.
UV Risk Categories
Weather in Saint George varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Saint George, focusing on differences in temperature, rainfall, humidity, and UV levels.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | -2°C (28°F) | 94 mm (3.7 inches) | 85% | low |
February Weather | -2°C (29°F) | 96 mm (3.8 inches) | 86% | moderate |
March Weather | 1°C (34°F) | 78 mm (3.1 inches) | 84% | moderate |
April Weather | 6°C (44°F) | 133 mm (5.2 inches) | 79% | high |
May Weather | 11°C (53°F) | 83 mm (3.3 inches) | 79% | very high |
June Weather | 17°C (62°F) | 72 mm (2.8 inches) | 86% | very high |
July Weather | 20°C (68°F) | 101 mm (4.0 inches) | 85% | very high |
August Weather | 20°C (68°F) | 80 mm (3.1 inches) | 83% | very high |
September Weather | 17°C (62°F) | 85 mm (3.3 inches) | 80% | high |
October Weather | 12°C (53°F) | 133 mm (5.2 inches) | 77% | moderate |
November Weather | 5°C (41°F) | 116 mm (4.6 inches) | 80% | moderate |
December Weather | 0°C (32°F) | 127 mm (5.0 inches) | 81% | low |