Last updated: June 24, 2025
In December in Grand Island, United States, the average temperature hovers around -1°C (31°F), with a minimum plummeting to -23°C (-9°F) and an occasional maximum soaring to 21°C (70°F). Expect around 42 mm (1.6 in) of precipitation over 4 days, paired with a notable average humidity of 79%. This mix of cold temperatures and moisture creates a distinctive winter atmosphere.
In December in Grand Island, the average temperature is -1°C (31°F), with maximums reaching 21°C (70°F) and minimums dropping as low as -23°C (-9°F). Be prepared for a wide range of weather conditions when traveling to Grand Island during this time.
In Grand Island in December, the precipitation amount is 42 mm (1.6 in) spread over a period of 4 days.
In Grand Island in December humidity is 79%. With an average temperature of -1°C (31°F), this humidity feels like a heavy, damp blanket wrapping around you, making outdoor adventures challenging as the cold moisture seeps into your clothes, leaving you feeling chilled to the bone.
In Grand Island in December, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Grand Island, you can check the information here.
UV Risk Categories
Weather in Grand Island varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Grand Island, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -3°C (26°F) | 28 mm (1.1 inches) | 73% | moderate |
| February Weather | -4°C (26°F) | 19 mm (0.7 inches) | 81% | moderate |
| March Weather | 5°C (41°F) | 86 mm (3.4 inches) | 69% | high |
| April Weather | 10°C (50°F) | 56 mm (2.2 inches) | 71% | very high |
| May Weather | 16°C (62°F) | 147 mm (5.8 inches) | 80% | very high |
| June Weather | 24°C (75°F) | 89 mm (3.5 inches) | 83% | extreme |
| July Weather | 25°C (78°F) | 66 mm (2.6 inches) | 84% | very high |
| August Weather | 24°C (75°F) | 71 mm (2.8 inches) | 84% | very high |
| September Weather | 21°C (69°F) | 59 mm (2.3 inches) | 77% | very high |
| October Weather | 11°C (52°F) | 86 mm (3.4 inches) | 72% | high |
| November Weather | 5°C (41°F) | 21 mm (0.8 inches) | 80% | moderate |
| December Weather | -1°C (31°F) | 42 mm (1.6 inches) | 79% | moderate |