Last updated: June 24, 2025
In Happy Valley, United States, the average temperature in January hovers around -3°C (26°F). Expect chilly days, with a minimum temperature dropping to -15°C (6°F) and reaching a maximum of 6°C (44°F). With 78 mm (3.1 in) of precipitation spread over 11 days, you might want to keep an umbrella handy. Feel the crisp air with an average humidity of 92%!
In January in Happy Valley, the average temperature is -3°C (26°F). Maximum temperatures can reach 6°C (44°F), while minimums can drop to as low as -15°C (6°F). Be prepared for chilly weather and ensure to dress warmly when traveling to Happy Valley during this time.
In Happy Valley in January, the precipitation amount is 78 mm (3.1 in) over the course of 11 days.
In Happy Valley in January, humidity is 92%. With an average temperature of -3°C (26°F), this humidity feels like a biting cold that cuts through your clothing, making outdoor activities uncomfortable and travel quite challenging.
In Happy Valley in January, the maximum UV index is 1, which corresponds to a low Exposure Category. This means you have a time to burn of 45 minutes. For more details, you can check the 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 January’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 |