Last updated: June 24, 2025
In December, the average temperature in McCormick, United States hovers around 10°C (50°F), with minimums dipping to -5°C (23°F) and maximums reaching up to 26°C (79°F). Expect about 115 mm (4.5 in) of precipitation spread over 10 days, coupled with an average humidity level of 87%. Perfect weather for cozy indoors and embracing the drizzle!
In December in McCormick, the average temperature is 10°C (50°F), with maximums reaching 26°C (79°F) and minimums dropping as low as -5°C (23°F). This diverse temperature range makes it essential for travelers to pack layers to stay comfortable throughout the day.
In McCormick in December, the precipitation amount is 115 mm (4.5 in) over a span of 10 days.
In McCormick in December humidity is 87%. With an average temperature of 10°C (50°F), this humidity feels like a heavy cloak wrapping around you, making every step feel laborious and the air thick with moisture, challenging your comfort while traveling.
In McCormick 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 McCormick for better planning.
UV Risk Categories
Weather in McCormick varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in McCormick, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 9°C (48°F) | 100 mm (4.0 inches) | 86% | moderate |
| February Weather | 11°C (53°F) | 119 mm (4.7 inches) | 81% | high |
| March Weather | 14°C (57°F) | 90 mm (3.6 inches) | 81% | very high |
| April Weather | 18°C (64°F) | 107 mm (4.2 inches) | 79% | very high |
| May Weather | 23°C (73°F) | 114 mm (4.5 inches) | 75% | extreme |
| June Weather | 26°C (78°F) | 90 mm (3.6 inches) | 75% | extreme |
| July Weather | 27°C (82°F) | 106 mm (4.2 inches) | 80% | extreme |
| August Weather | 27°C (81°F) | 124 mm (4.9 inches) | 81% | very high |
| September Weather | 25°C (77°F) | 82 mm (3.2 inches) | 83% | very high |
| October Weather | 20°C (68°F) | 92 mm (3.6 inches) | 78% | very high |
| November Weather | 12°C (55°F) | 89 mm (3.5 inches) | 85% | high |
| December Weather | 10°C (50°F) | 115 mm (4.5 inches) | 87% | moderate |