Last updated: June 24, 2025
In December, the average temperature in Stewart, United States hovers around -5°C (23°F). During this time, temperatures can dip as low as -25°C (-13°F), while the mercury can occasionally rise to a maximum of 13°C (56°F). Expect 39 mm (1.6 in) of precipitation spread over 6 days, accompanied by a notable average humidity of 84%.
In December in Stewart, the average temperature is -5°C (23°F). The maximum can reach 13°C (56°F), and the minimum can be as low as -25°C (-13°F). Be prepared for a significant range in temperatures and dress accordingly for your travels.
In Stewart in December, the precipitation amount is 39 mm (1.6 in) over the course of 6 days.
In Stewart in December, humidity is 84%. With an average temperature of -5°C (23°F), this humidity feels like an icy blanket wrapping around you, making the cold air bite even deeper and turning travel into a brisk, challenging adventure where each breath comes with a frosty reminder of the chill.
In Stewart 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 Stewart, you can visit Hourly UV Index in Stewart.
UV Risk Categories
Weather in Stewart varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Stewart, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -9°C (16°F) | 24 mm (0.9 inches) | 87% | moderate |
| February Weather | -9°C (15°F) | 26 mm (1.0 inches) | 90% | moderate |
| March Weather | 0°C (32°F) | 57 mm (2.2 inches) | 85% | moderate |
| April Weather | 6°C (43°F) | 77 mm (3.0 inches) | 84% | high |
| May Weather | 15°C (59°F) | 117 mm (4.6 inches) | 78% | very high |
| June Weather | 22°C (72°F) | 98 mm (3.8 inches) | 80% | very high |
| July Weather | 23°C (74°F) | 110 mm (4.3 inches) | 81% | very high |
| August Weather | 21°C (70°F) | 142 mm (5.6 inches) | 81% | very high |
| September Weather | 18°C (64°F) | 112 mm (4.4 inches) | 81% | high |
| October Weather | 9°C (48°F) | 97 mm (3.8 inches) | 84% | moderate |
| November Weather | 1°C (33°F) | 29 mm (1.1 inches) | 88% | moderate |
| December Weather | -5°C (23°F) | 39 mm (1.6 inches) | 84% | low |