Last updated: June 24, 2025
The average temperature in Millwood, United States during December is a cool 10°C (51°F). Expect temperatures to swing between a chilly -6°C (21°F) and a warm 28°C (82°F). With an average precipitation amount of 140 mm (5.5 in) spread over 10 days, you'll want to come prepared for some wet weather. Don't forget, the average humidity level hovers around a high 87%, giving you that quintessential Millwood atmosphere!
In December in Millwood, the average temperature is 10°C (51°F). The maximum can reach 28°C (82°F), while the minimum can be as low as -6°C (21°F). Travelers should be prepared for a wide range of temperatures and pack accordingly.
In Millwood in December, the total precipitation amount is 140 mm (5.5 in) spread over a period of 10 days.
In Millwood in December humidity is 87%. With an average temperature of 10°C (51°F), this humidity feels like a heavy blanket enveloping you, making outdoor activities uncomfortable and sticky, and often requiring frequent breaks to stay hydrated and cool.
In Millwood in December, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Millwood for better planning.
UV Risk Categories
Weather in Millwood varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Millwood, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 9°C (48°F) | 81 mm (3.2 inches) | 86% | moderate |
| February Weather | 12°C (54°F) | 97 mm (3.8 inches) | 81% | high |
| March Weather | 14°C (58°F) | 72 mm (2.8 inches) | 81% | very high |
| April Weather | 18°C (65°F) | 108 mm (4.3 inches) | 79% | very high |
| May Weather | 23°C (74°F) | 97 mm (3.8 inches) | 75% | extreme |
| June Weather | 26°C (79°F) | 120 mm (4.7 inches) | 75% | extreme |
| July Weather | 28°C (82°F) | 140 mm (5.5 inches) | 80% | extreme |
| August Weather | 27°C (81°F) | 126 mm (5.0 inches) | 81% | very high |
| September Weather | 25°C (77°F) | 121 mm (4.8 inches) | 83% | very high |
| October Weather | 20°C (69°F) | 62 mm (2.5 inches) | 78% | very high |
| November Weather | 13°C (55°F) | 66 mm (2.6 inches) | 85% | high |
| December Weather | 10°C (51°F) | 140 mm (5.5 inches) | 87% | moderate |