Last updated: June 24, 2025
In September, the average temperature in Grandview Heights, United States is a pleasant 20°C (69°F), with minimums dipping to 5°C (42°F) and maximums soaring to 34°C (94°F). Expect around 90 mm (3.5 in) of precipitation over approximately 7 days, accompanied by an average humidity of 73%. Embrace the vibrant, yet diverse, weather this month!
In September in Grandview Heights, the average temperature is 20°C (69°F). Maximum temperatures can reach 34°C (94°F), while minimums can drop to as low as 5°C (42°F). Be sure to pack for a range of weather conditions, from warm days to cooler evenings, as you explore Grandview Heights.
In Grandview Heights in September, the precipitation amount is 90 mm (3.5 in) over the course of 7 days.
In Grandview Heights in September humidity is 73%. With an average temperature of 20°C (69°F), this humidity feels like a warm embrace, making travel slightly sticky but ultimately comfortable as long as you stay hydrated and take breaks in the shade.
In Grandview Heights 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 Grandview Heights.
UV Risk Categories
Weather in Grandview Heights varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Grandview Heights, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -1°C (31°F) | 81 mm (3.2 inches) | 88% | moderate |
| February Weather | 1°C (35°F) | 107 mm (4.2 inches) | 88% | moderate |
| March Weather | 6°C (43°F) | 112 mm (4.4 inches) | 87% | high |
| April Weather | 11°C (52°F) | 117 mm (4.6 inches) | 85% | very high |
| May Weather | 18°C (64°F) | 127 mm (5.0 inches) | 81% | very high |
| June Weather | 22°C (72°F) | 146 mm (5.7 inches) | 82% | very high |
| July Weather | 24°C (76°F) | 113 mm (4.4 inches) | 81% | very high |
| August Weather | 23°C (74°F) | 80 mm (3.1 inches) | 73% | very high |
| September Weather | 20°C (69°F) | 90 mm (3.5 inches) | 73% | very high |
| October Weather | 14°C (58°F) | 100 mm (3.9 inches) | 78% | high |
| November Weather | 6°C (42°F) | 96 mm (3.8 inches) | 89% | moderate |
| December Weather | 2°C (37°F) | 102 mm (4.0 inches) | 87% | moderate |