Last updated: June 24, 2025
In Poplar Grove, United States, the average temperature in September hovers around 19°C (67°F), with minimums dipping to 2°C (36°F) and maximums soaring to 33°C (92°F). Precipitation averages 104 mm (4.1 in) over 10 days, contributing to an average humidity of 79%. Enjoy the mild climate while preparing for the occasional shower!
In September in Poplar Grove, the average temperature is 19°C (67°F), with maximums reaching 33°C (92°F) and minimums dropping as low as 2°C (36°F). This range makes it a great time to visit for those who enjoy mild weather but should be prepared for both warm days and cooler nights.
In Poplar Grove in September, the precipitation amount is 104 mm (4.1 in) over a period of 10 days.
In Poplar Grove in September, humidity is 79%. With an average temperature of 19°C (67°F), this humidity feels like a warm, enveloping blanket that makes traveling a bit more challenging, as the air is thick and can leave you feeling sluggish during outdoor adventures.
In Poplar Grove 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 Poplar Grove.
UV Risk Categories
Weather in Poplar Grove varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Poplar Grove, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -5°C (23°F) | 61 mm (2.4 inches) | 85% | moderate |
| February Weather | -4°C (25°F) | 56 mm (2.2 inches) | 85% | moderate |
| March Weather | 3°C (38°F) | 71 mm (2.8 inches) | 85% | high |
| April Weather | 8°C (47°F) | 106 mm (4.2 inches) | 85% | very high |
| May Weather | 16°C (60°F) | 159 mm (6.3 inches) | 78% | very high |
| June Weather | 22°C (71°F) | 110 mm (4.3 inches) | 80% | very high |
| July Weather | 24°C (75°F) | 82 mm (3.2 inches) | 78% | very high |
| August Weather | 22°C (72°F) | 86 mm (3.4 inches) | 76% | very high |
| September Weather | 19°C (67°F) | 104 mm (4.1 inches) | 79% | very high |
| October Weather | 12°C (53°F) | 115 mm (4.5 inches) | 83% | moderate |
| November Weather | 3°C (38°F) | 49 mm (1.9 inches) | 88% | moderate |
| December Weather | 0°C (32°F) | 51 mm (2.0 inches) | 81% | low |