Last updated: June 24, 2025
In September, the average temperature in Belle Plaine, United States is a pleasant 20°C (67°F). However, be prepared for some fluctuations, as temperatures can dip to a minimum of 3°C (37°F) and soar up to a maximum of 33°C (92°F). With an average precipitation of 121 mm (4.8 in) spread over 9 days, it’s wise to carry an umbrella. Additionally, expect a humidity level of 78%, creating a warm, somewhat muggy atmosphere. Stay comfortable and enjoy your time!
In September in Belle Plaine, the average temperature is 20°C (67°F). Maximums can reach 33°C (92°F), while minimums can drop as low as 3°C (37°F). This pleasant climate makes Belle Plaine an ideal destination for travelers seeking a mix of warmth and cool relief during their journey.
In Belle Plaine in September, the precipitation amount is 121 mm (4.8 in) over the course of 9 days.
In Belle Plaine in September humidity is 78%. With an average temperature of 20°C (67°F), this humidity feels like walking through a warm, thick blanket, making travel a bit sticky and requiring frequent breaks to find shade and cool refreshments.
In Belle Plaine 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 Belle Plaine.
UV Risk Categories
Weather in Belle Plaine varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Belle Plaine, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -6°C (21°F) | 45 mm (1.8 inches) | 81% | moderate |
| February Weather | -5°C (23°F) | 52 mm (2.1 inches) | 81% | moderate |
| March Weather | 3°C (38°F) | 73 mm (2.9 inches) | 81% | high |
| April Weather | 9°C (48°F) | 85 mm (3.3 inches) | 82% | very high |
| May Weather | 16°C (62°F) | 162 mm (6.4 inches) | 78% | very high |
| June Weather | 23°C (73°F) | 143 mm (5.6 inches) | 81% | extreme |
| July Weather | 24°C (76°F) | 91 mm (3.6 inches) | 79% | very high |
| August Weather | 22°C (72°F) | 64 mm (2.5 inches) | 77% | very high |
| September Weather | 20°C (67°F) | 121 mm (4.8 inches) | 78% | very high |
| October Weather | 11°C (52°F) | 143 mm (5.6 inches) | 78% | high |
| November Weather | 3°C (38°F) | 45 mm (1.8 inches) | 87% | moderate |
| December Weather | -1°C (30°F) | 40 mm (1.6 inches) | 84% | moderate |