Last updated: June 24, 2025
In Castleton-on-Hudson, United States, the average temperature in December hovers around 0°C (32°F). Expect a chilly range, with minimums dipping to -21°C (-5°F) and maximums reaching up to 16°C (62°F). During this month, anticipate 95 mm (3.7 in) of precipitation over 11 days, contributing to an average humidity level of 84%. Perfect for cozy indoor activities or bundling up for outdoor adventures!
In December in Castleton-on-Hudson, the average temperature is 0°C (32°F), with maximums reaching 16°C (62°F) and minimums plummeting to as low as -21°C (-5°F). Travelers should prepare for a wide range of temperatures during their visit, ensuring they pack for both chilly and milder weather.
In Castleton-on-Hudson in December, the total precipitation amount is 95 mm (3.7 in) spread over 11 days.
In Castleton-on-Hudson in December, humidity is 84%. With an average temperature of 0°C (32°F), this humidity feels like a cold, damp chill that seeps into your clothes, making traveling uncomfortable and necessitating extra layers to stay warm despite the moisture-laden air.
In Castleton-on-Hudson in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Castleton-on-Hudson, you can visit Hourly UV Index in Castleton-on-Hudson.
UV Risk Categories
Weather in Castleton-on-Hudson varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Castleton-on-Hudson, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -2°C (28°F) | 69 mm (2.7 inches) | 89% | moderate |
| February Weather | -1°C (30°F) | 88 mm (3.5 inches) | 88% | moderate |
| March Weather | 2°C (36°F) | 76 mm (3.0 inches) | 86% | high |
| April Weather | 9°C (48°F) | 125 mm (4.9 inches) | 84% | very high |
| May Weather | 15°C (60°F) | 100 mm (3.9 inches) | 76% | very high |
| June Weather | 20°C (68°F) | 92 mm (3.6 inches) | 72% | very high |
| July Weather | 23°C (74°F) | 136 mm (5.3 inches) | 66% | very high |
| August Weather | 22°C (72°F) | 108 mm (4.3 inches) | 64% | very high |
| September Weather | 18°C (65°F) | 105 mm (4.1 inches) | 72% | high |
| October Weather | 12°C (55°F) | 137 mm (5.4 inches) | 81% | high |
| November Weather | 4°C (40°F) | 96 mm (3.8 inches) | 87% | moderate |
| December Weather | 0°C (32°F) | 95 mm (3.7 inches) | 84% | low |