Last updated: June 24, 2025
In September, the average temperature in Harrisonburg, United States is a warm 27°C (80°F). Visitors can expect a range, with minimum temperatures dipping to 12°C (55°F) and peaks soaring up to 40°C (104°F). Be prepared for occasional rain, as the area receives about 102 mm (4.0 in) of precipitation over 9 days. With an average humidity of 79%, it’s a good idea to stay hydrated and enjoy the vibrant atmosphere!
In September in Harrisonburg, the average temperature is 27°C (80°F). Maximum temperatures can reach up to 40°C (104°F), while minimums can drop as low as 12°C (55°F). Be prepared for a warm climate with varying temperatures—pack accordingly for both heat and cooler evenings while exploring this vibrant destination!
In Harrisonburg in September, the total precipitation amount is 102 mm (4.0 in) over a span of 9 days.
In Harrisonburg in September humidity is 79%. With an average temperature of 27°C (80°F), this humidity feels like walking through a warm, dense blanket, making travel feel sluggish and allowing every step to become noticeably heavier.
In Harrisonburg in September, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Harrisonburg.
UV Risk Categories
Weather in Harrisonburg varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Harrisonburg, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 10°C (50°F) | 122 mm (4.8 inches) | 83% | moderate |
| February Weather | 12°C (55°F) | 148 mm (5.8 inches) | 83% | high |
| March Weather | 17°C (63°F) | 111 mm (4.4 inches) | 80% | very high |
| April Weather | 19°C (66°F) | 140 mm (5.5 inches) | 81% | extreme |
| May Weather | 24°C (75°F) | 137 mm (5.4 inches) | 81% | extreme |
| June Weather | 27°C (80°F) | 135 mm (5.3 inches) | 78% | extreme |
| July Weather | 28°C (83°F) | 118 mm (4.7 inches) | 79% | extreme |
| August Weather | 28°C (83°F) | 119 mm (4.7 inches) | 79% | extreme |
| September Weather | 27°C (80°F) | 102 mm (4.0 inches) | 79% | very high |
| October Weather | 21°C (70°F) | 123 mm (4.8 inches) | 77% | very high |
| November Weather | 14°C (57°F) | 81 mm (3.2 inches) | 85% | high |
| December Weather | 12°C (54°F) | 122 mm (4.8 inches) | 88% | moderate |