Last updated: June 24, 2025
In December, the average temperature in Window Rock, United States hovers around -1°C (31°F). Expect a chilly range, where temperatures can plummet to a minimum of -18°C (-1°F) and reach a maximum of 15°C (59°F). With 29 mm (1.2 in) of precipitation spread over 5 days, brace yourself for damp conditions, complemented by an average humidity level of 82%. Stay warm and prepared! 🌨️
In December in Window Rock, the average temperature is -1°C (31°F), with maximums reaching 15°C (59°F) and minimums dropping as low as -18°C (-1°F). It's essential to pack warm clothing and be prepared for chilly conditions if you're planning to visit during this time.
In Window Rock in December, the precipitation amount is 29 mm (1.2 in) over a period of 5 days.
In Window Rock in December humidity is 82%. With an average temperature of -1°C (31°F), this humidity feels like a heavy, biting chill that seeps through layers of clothing, making outdoor activities uncomfortable and urging travelers to seek shelter or warm beverages to combat the cold.
In Window Rock 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 Window Rock for better planning.
UV Risk Categories
Weather in Window Rock varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Window Rock, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -2°C (29°F) | 31 mm (1.2 inches) | 81% | moderate |
| February Weather | 0°C (33°F) | 36 mm (1.4 inches) | 83% | very high |
| March Weather | 5°C (40°F) | 43 mm (1.7 inches) | 71% | very high |
| April Weather | 10°C (51°F) | 16 mm (0.6 inches) | 61% | extreme |
| May Weather | 15°C (59°F) | 21 mm (0.8 inches) | 48% | extreme |
| June Weather | 22°C (71°F) | 6 mm (0.2 inches) | 36% | extreme |
| July Weather | 23°C (73°F) | 48 mm (1.9 inches) | 37% | extreme |
| August Weather | 22°C (72°F) | 24 mm (0.9 inches) | 46% | extreme |
| September Weather | 18°C (65°F) | 33 mm (1.3 inches) | 62% | extreme |
| October Weather | 11°C (52°F) | 26 mm (1.0 inches) | 74% | very high |
| November Weather | 5°C (42°F) | 19 mm (0.7 inches) | 82% | high |
| December Weather | -1°C (31°F) | 29 mm (1.2 inches) | 82% | moderate |