Last updated: June 24, 2025
In August, the average temperature in Happy Valley, United States hovers around 13°C (56°F), with a minimum dipping to 8°C (47°F) and a maximum peaking at 20°C (68°F). Prepare for some rain, as 99 mm (3.9 in) of precipitation is expected over 12 days, contributing to a high average humidity of 92%.
In August, in Happy Valley, the average temperature is 13°C (56°F). The maximum can reach 20°C (68°F) and the minimum can be as low as 8°C (47°F). It’s a great time for travelers to enjoy mild weather while exploring the sights.
In Happy Valley in August, the total precipitation amount is 99 mm (3.9 in) recorded over a span of 12 days.
In Happy Valley in August humidity is 92%. With an average temperature of 13°C (56°F), this humidity feels like you're wrapped in a damp blanket, making every step feel sluggish and the air thick as you navigate through the surroundings, which can be exhausting for traveling.
In Happy Valley in August, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Happy Valley, you can refer to this Hourly UV Index in Happy Valley.
UV Risk Categories
Weather in Happy Valley varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Happy Valley, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -3°C (26°F) | 78 mm (3.1 inches) | 92% | low |
| February Weather | -2°C (28°F) | 70 mm (2.8 inches) | 92% | low |
| March Weather | -1°C (30°F) | 54 mm (2.1 inches) | 86% | moderate |
| April Weather | 3°C (37°F) | 51 mm (2.0 inches) | 79% | moderate |
| May Weather | 7°C (45°F) | 96 mm (3.8 inches) | 87% | high |
| June Weather | 10°C (51°F) | 64 mm (2.5 inches) | 91% | high |
| July Weather | 13°C (55°F) | 85 mm (3.3 inches) | 92% | high |
| August Weather | 13°C (56°F) | 99 mm (3.9 inches) | 92% | high |
| September Weather | 11°C (51°F) | 139 mm (5.5 inches) | 90% | moderate |
| October Weather | 6°C (44°F) | 164 mm (6.5 inches) | 87% | low |
| November Weather | 0°C (33°F) | 124 mm (4.9 inches) | 91% | low |
| December Weather | -1°C (31°F) | 155 mm (6.1 inches) | 92% | low |