Last updated: June 24, 2025
In Rosemount, United States, the average temperature in September hovers around 21°C (71°F), making it a pleasant time to visit. However, temperatures can fluctuate, with a minimum of 7°C (44°F) and peaking at a hot 37°C (99°F). Expect about 109 mm (4.3 in) of rainfall spread over 8 days, and a moderate average humidity of 73%. Embrace the variety this month brings!
In September in Rosemount, the average temperature is 21°C (71°F). Maximums can reach 37°C (99°F) and minimums can be as low as 7°C (44°F). This range of temperatures makes Rosemount an ideal destination for travelers seeking both warm and cooler experiences.
In Rosemount in September, the total precipitation amount is 109 mm (4.3 in) spread over 8 days.
In Rosemount in September humidity is 73%. With an average temperature of 21°C (71°F), this humidity feels like a warm, enveloping blanket that can make outdoor activities a bit uncomfortable, but with proper hydration and breaks in the shade, it’s still manageable for traveling.
In Rosemount 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 Rosemount.
UV Risk Categories
Weather in Rosemount varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Rosemount, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 2°C (35°F) | 85 mm (3.3 inches) | 88% | moderate |
| February Weather | 4°C (39°F) | 124 mm (4.9 inches) | 88% | moderate |
| March Weather | 8°C (47°F) | 106 mm (4.2 inches) | 87% | high |
| April Weather | 13°C (55°F) | 128 mm (5.0 inches) | 85% | very high |
| May Weather | 19°C (66°F) | 128 mm (5.0 inches) | 81% | very high |
| June Weather | 23°C (73°F) | 157 mm (6.2 inches) | 82% | very high |
| July Weather | 25°C (78°F) | 107 mm (4.2 inches) | 81% | very high |
| August Weather | 24°C (75°F) | 120 mm (4.7 inches) | 73% | very high |
| September Weather | 21°C (71°F) | 109 mm (4.3 inches) | 73% | very high |
| October Weather | 15°C (60°F) | 116 mm (4.5 inches) | 78% | high |
| November Weather | 7°C (45°F) | 77 mm (3.0 inches) | 89% | moderate |
| December Weather | 4°C (40°F) | 112 mm (4.4 inches) | 87% | moderate |