Last updated: June 24, 2025
In Grants, United States, the average temperature in December hovers around -1°C (31°F), with extremes dipping to a chilly -22°C (-8°F) and peaking at a mild 15°C (60°F). Expect 17 mm (0.7 in) of precipitation over approximately 3 days, while the atmosphere remains quite humid, with an average humidity level of 82%.
In December in Grants, the average temperature is -1°C (31°F), with maximums reaching 15°C (60°F) and minimums dropping as low as -22°C (-8°F). It's advisable to pack warm layers and be prepared for chilly conditions if you're planning to visit during this time.
In Grants in December, the precipitation amount is 17 mm (0.7 in) over the course of 3 days.
In Grants 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 Grants 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 Grants for better planning.
UV Risk Categories
Weather in Grants varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Grants, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -2°C (29°F) | 23 mm (0.9 inches) | 81% | moderate |
| February Weather | 0°C (33°F) | 22 mm (0.9 inches) | 83% | high |
| March Weather | 5°C (42°F) | 29 mm (1.2 inches) | 71% | very high |
| April Weather | 10°C (50°F) | 20 mm (0.8 inches) | 61% | extreme |
| May Weather | 15°C (59°F) | 18 mm (0.7 inches) | 48% | extreme |
| June Weather | 21°C (70°F) | 15 mm (0.6 inches) | 36% | extreme |
| July Weather | 21°C (71°F) | 70 mm (2.8 inches) | 37% | extreme |
| August Weather | 20°C (69°F) | 36 mm (1.4 inches) | 46% | extreme |
| September Weather | 17°C (64°F) | 35 mm (1.4 inches) | 62% | extreme |
| October Weather | 10°C (51°F) | 24 mm (0.9 inches) | 74% | very high |
| November Weather | 5°C (41°F) | 14 mm (0.5 inches) | 82% | high |
| December Weather | -1°C (31°F) | 17 mm (0.7 inches) | 82% | moderate |