Last updated: June 18, 2025
In Rock Island, Canada, the average temperature in August hovers around 19°C (66°F). Expect a range of 5°C (42°F) as the minimum and a pleasant 32°C (89°F) at its peak. During this month, anticipate 104 mm (4.1 in) of precipitation spread over 16 days, contributing to an average humidity of 74%. Stay prepared for a mix of warm days and refreshing showers!
In August in Rock Island, the average temperature is 19°C (66°F). Maximum temperatures can reach 32°C (89°F), while minimum temperatures can drop as low as 5°C (42°F). This pleasant climate makes Rock Island an ideal destination for travelers seeking both warmth and cool relief.
In Rock Island in August, the total precipitation amount is 104 mm (4.1 in), distributed over 16 days.
In Rock Island in August humidity is 74%. With an average temperature of 19°C (66°F), this humidity feels like a warm, enveloping blanket, making it ideal for leisurely outdoor exploration but potentially heavy for those not accustomed to tropical conditions.
In Rock Island in August, 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 Rock Island.
UV Risk Categories
Weather in Rock Island varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Rock Island, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -8°C (17°F) | 88 mm (3.5 inches) | 91% | low |
| February Weather | -7°C (20°F) | 82 mm (3.2 inches) | 89% | moderate |
| March Weather | -3°C (27°F) | 80 mm (3.1 inches) | 85% | moderate |
| April Weather | 5°C (40°F) | 112 mm (4.4 inches) | 84% | high |
| May Weather | 12°C (53°F) | 103 mm (4.1 inches) | 78% | very high |
| June Weather | 17°C (62°F) | 116 mm (4.5 inches) | 72% | very high |
| July Weather | 20°C (67°F) | 119 mm (4.7 inches) | 75% | very high |
| August Weather | 19°C (66°F) | 104 mm (4.1 inches) | 74% | very high |
| September Weather | 14°C (58°F) | 83 mm (3.3 inches) | 77% | high |
| October Weather | 8°C (47°F) | 149 mm (5.9 inches) | 85% | moderate |
| November Weather | 0°C (33°F) | 114 mm (4.5 inches) | 86% | moderate |
| December Weather | -5°C (23°F) | 84 mm (3.3 inches) | 85% | low |