Last updated: June 24, 2025
In December, the average temperature in Blair, United States hovers around -1°C (31°F), making it essential to bundle up! Brace yourself for possible temperature swings, with minimums plummeting to -24°C (-12°F) and maximums reaching a surprising 21°C (70°F). Additionally, expect about 39 mm (1.5 in) of precipitation over 3 days, and keep in mind the average humidity is notably high at 83%. Plan accordingly for a chilly yet captivating month!
In December in Blair, the average temperature is -1°C (31°F). The maximum can reach 21°C (70°F), while the minimum can drop to as low as -24°C (-12°F). Be sure to prepare for a wide range of temperatures when traveling during this time.
In Blair in December, the precipitation amount is 39 mm (1.5 in) over a span of 3 days.
In Blair in December humidity is 83%. With an average temperature of -1°C (31°F), this humidity feels like a heavy, icy blanket enveloping you, making each step outside feel like a struggle against the cold, damp air that clings to your skin, often leaving you wishing for warmth and refuge indoors.
In Blair 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 Blair, you can visit Hourly UV Index in Blair.
UV Risk Categories
Weather in Blair varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Blair, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -4°C (25°F) | 31 mm (1.2 inches) | 76% | moderate |
| February Weather | -4°C (25°F) | 32 mm (1.3 inches) | 80% | moderate |
| March Weather | 5°C (41°F) | 90 mm (3.5 inches) | 73% | high |
| April Weather | 10°C (50°F) | 60 mm (2.4 inches) | 74% | very high |
| May Weather | 17°C (63°F) | 154 mm (6.1 inches) | 78% | very high |
| June Weather | 24°C (76°F) | 126 mm (5.0 inches) | 82% | very high |
| July Weather | 25°C (78°F) | 66 mm (2.6 inches) | 83% | very high |
| August Weather | 23°C (74°F) | 106 mm (4.2 inches) | 80% | very high |
| September Weather | 21°C (69°F) | 81 mm (3.2 inches) | 75% | very high |
| October Weather | 11°C (53°F) | 111 mm (4.4 inches) | 75% | high |
| November Weather | 4°C (40°F) | 31 mm (1.2 inches) | 82% | moderate |
| December Weather | -1°C (31°F) | 39 mm (1.5 inches) | 83% | low |