Last updated: March 2, 2024
The weather in Decorah, United States, during August is characterized by an average temperature of 21°C (70°F). Highs can soar to 31°C (88°F), while lows may dip to 11°C (52°F). Typically, the humidity level in Decorah throughout August hovers around 69%.
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Humidity
In August, Decorah averages 109 mm (4.3 inches) of rainfall, typically over the course of 10 rainy days. The month enjoys an average of 13 hours 51 minutes of daylight, with the sun shining for approximately 10 hours 26 minutes each day. Additionally, there is a 57% probability of sunny days during this period.
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In August, the UV Index in Decorah reaches a maximum of 9, indicating a level of VeryHigh exposure. The most intense UV radiation typically occurs between 13:00 and 15:00, during which unprotected skin may burn in as little as 15 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 | 1 | 1 | 3 | 5 | 7 | 8 | 9 | 8 | 7 | 5 | 3 | 2 | 1 |
| Exposure | Low | Moderate | High | VeryHigh | High | Moderate | Low | ||||||
| Time to burn | 45 min | 30 min | 25 min | 15 min | 25 min | 30 min | 45 min | ||||||