Last updated: June 24, 2025
In North Granby, United States during December, the average temperature hovers around 1°C (34°F). Expect chilly nights with a minimum dipping to -20°C (-4°F), while the days can warm up to a maximum of 17°C (62°F). Precipitation averages 121 mm (4.8 in) spread over 10 days, and the humidity remains high at around 80%, creating a crisp and damp atmosphere.
In December in North Granby the average temperature is 1°C (34°F). The maximum can reach 17°C (62°F) and the minimum can be as low as -20°C (-4°F). Travelers should be prepared for a wide range of temperatures, varying from chilly to quite mild, so layering clothing is advisable.
In North Granby in December, the precipitation amount is 121 mm (4.8 in) spread over a period of 10 days.
In North Granby in December, humidity is 80%. With an average temperature of 1°C (34°F), this humidity feels like a damp chill that seeps through your layers, making outdoor activities uncomfortable and potentially discouraging for travelers.
In North Granby 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 North Granby, you can visit Hourly UV Index in North Granby.
UV Risk Categories
Weather in North Granby varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in North Granby, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -1°C (30°F) | 73 mm (2.9 inches) | 84% | moderate |
| February Weather | 0°C (32°F) | 91 mm (3.6 inches) | 82% | moderate |
| March Weather | 3°C (38°F) | 87 mm (3.4 inches) | 81% | high |
| April Weather | 9°C (49°F) | 138 mm (5.5 inches) | 78% | very high |
| May Weather | 15°C (60°F) | 116 mm (4.6 inches) | 69% | very high |
| June Weather | 20°C (69°F) | 83 mm (3.3 inches) | 69% | very high |
| July Weather | 23°C (74°F) | 143 mm (5.6 inches) | 62% | very high |
| August Weather | 23°C (73°F) | 94 mm (3.7 inches) | 65% | very high |
| September Weather | 19°C (66°F) | 114 mm (4.5 inches) | 68% | very high |
| October Weather | 13°C (56°F) | 145 mm (5.7 inches) | 74% | high |
| November Weather | 5°C (42°F) | 92 mm (3.6 inches) | 82% | moderate |
| December Weather | 1°C (34°F) | 121 mm (4.8 inches) | 80% | low |