Last updated: August 23, 2025
In December, the average temperature in Grundviller, France hovers around 4°C (40°F), with the range dipping as low as -5°C (23°F) and peaking at 14°C (57°F). Be prepared for some wet days, as 122 mm (4.8 in) of precipitation typically falls over the course of 19 days. Furthermore, you can expect a high level of humidity at 93%, making the air feel quite damp during this time.
In December in Grundviller, the average temperature is 4°C (40°F). The maximum can reach 14°C (57°F), while the minimum can drop as low as -5°C (23°F). Be prepared for chilly weather and pack accordingly if you plan to visit during this time.
In Grundviller in December, the precipitation amount is 122 mm (4.8 in) over a span of 19 days.
In Grundviller in December, humidity is 93%. With an average temperature of 4°C (40°F), this humidity feels like a cold, damp blanket wrapping around you, making travel uncomfortable and requiring extra layers to stay warm, as every step can feel heavy in the thick, moisture-laden air.
In Grundviller in December, the maximum UV index is 1, which corresponds to a low Exposure Category. This means you have a time to burn of 45 minutes. For more details, you can check the Hourly UV Index in Grundviller.
UV Risk Categories
Weather in Grundviller varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Grundviller, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 2°C (37°F) | 79 mm (3.1 inches) | 91% | low |
| February Weather | 5°C (40°F) | 79 mm (3.1 inches) | 90% | moderate |
| March Weather | 7°C (44°F) | 80 mm (3.2 inches) | 88% | moderate |
| April Weather | 10°C (51°F) | 42 mm (1.7 inches) | 84% | high |
| May Weather | 14°C (57°F) | 76 mm (3.0 inches) | 81% | very high |
| June Weather | 19°C (67°F) | 63 mm (2.5 inches) | 82% | very high |
| July Weather | 20°C (69°F) | 57 mm (2.3 inches) | 82% | very high |
| August Weather | 20°C (69°F) | 50 mm (2.0 inches) | 80% | very high |
| September Weather | 16°C (61°F) | 60 mm (2.4 inches) | 83% | high |
| October Weather | 12°C (53°F) | 63 mm (2.5 inches) | 89% | moderate |
| November Weather | 6°C (43°F) | 67 mm (2.7 inches) | 91% | low |
| December Weather | 4°C (40°F) | 122 mm (4.8 inches) | 93% | low |