Last updated: June 24, 2025
In Harvey, United States, the average temperature in September hovers around 15°C (59°F). However, be prepared for a temperature range that can drop to a chilling -1°C (30°F) or soar to a warm 35°C (96°F). During this month, expect about 58 mm (2.3 in) of rainfall, spread over 7 days, contributing to an average humidity of 69%. Stay comfortable and enjoy the seasonal shifts!
In September in Harvey, the average temperature is 15°C (59°F), with maximums reaching 35°C (96°F) and minimums dropping as low as -1°C (30°F). This wide range makes Harvey a destination where you should be prepared for both warm and cold weather.
In Harvey in September, the precipitation amount is 58 mm (2.3 in) over the course of 7 days.
In Harvey in September humidity is 69%. With an average temperature of 15°C (59°F), this humidity feels like a mild blanket wrapping around you, making it slightly uncomfortable for traveling; you'll likely find yourself seeking shade and refreshing drinks to stay cool as you explore.
In Harvey 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 Harvey.
UV Risk Categories
Weather in Harvey varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Harvey, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -11°C (12°F) | 15 mm (0.6 inches) | 84% | low |
| February Weather | -13°C (9°F) | 19 mm (0.7 inches) | 88% | moderate |
| March Weather | -3°C (27°F) | 25 mm (1.0 inches) | 78% | moderate |
| April Weather | 3°C (38°F) | 30 mm (1.2 inches) | 75% | very high |
| May Weather | 13°C (55°F) | 41 mm (1.6 inches) | 76% | very high |
| June Weather | 20°C (68°F) | 72 mm (2.9 inches) | 79% | very high |
| July Weather | 22°C (71°F) | 71 mm (2.8 inches) | 78% | very high |
| August Weather | 20°C (68°F) | 70 mm (2.7 inches) | 78% | very high |
| September Weather | 15°C (59°F) | 58 mm (2.3 inches) | 69% | high |
| October Weather | 6°C (43°F) | 59 mm (2.3 inches) | 71% | moderate |
| November Weather | -2°C (28°F) | 23 mm (0.9 inches) | 82% | moderate |
| December Weather | -8°C (18°F) | 27 mm (1.1 inches) | 84% | low |