Last updated: March 2, 2024
The weather in Grand Ledge, United States, during September is characterized by an average temperature of 18°C (65°F). Highs can soar to 31°C (89°F), while lows may dip to 5°C (42°F). Typically, the humidity level in Grand Ledge throughout September hovers around 80%.
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Average temperature
Maximum temperature
Humidity
In September, Grand Ledge averages 102 mm (4.0 inches) of rainfall, typically over the course of 11 rainy days. The month enjoys an average of 12 hours 25 minutes of daylight, with the sun shining for approximately 9 hours 13 minutes each day. Additionally, there is a 51% probability of sunny days during this period.
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Chance of sun
In September, the UV Index in Grand Ledge reaches a maximum of 7, indicating a level of High exposure. The most intense UV radiation typically occurs between 13:00 and 15:00, during which unprotected skin may burn in as little as 25 minutes.
| 07:00 | 08:00 | 09:00 | 10:00 | 11:00 | 12:00 | 13:00 | 14:00 | 15:00 | 16:00 | 17:00 | 18:00 | 19:00 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UVI | 0 | 1 | 2 | 3 | 5 | 6 | 7 | 7 | 6 | 5 | 3 | 2 | 1 |
| Exposure | Low | Moderate | High | Moderate | Low | ||||||||
| Time to burn | 45 min | 30 min | 25 min | 30 min | 45 min | ||||||||