Last updated: June 24, 2025
In December, the average temperature in Calvert, United States hovers around 13°C (55°F), with a notable range from a chilly -3°C (27°F) to a warm 29°C (84°F). Be prepared for some wet days, as the area receives approximately 94 mm (3.7 in) of precipitation spread over 8 days. With an average humidity of 87%, it's a month that combines coolness with a touch of dampness, making it essential to dress accordingly!
In December in Calvert, the average temperature is 13°C (55°F). The maximum can reach 29°C (84°F), while the minimum can drop as low as -3°C (27°F). This range of temperatures makes Calvert an ideal destination for travelers seeking mild weather with the possibility of both warm days and cool nights.
In Calvert in December, the precipitation amount is 94 mm (3.7 in) over the course of 8 days.
In Calvert in December, humidity is 87%. With an average temperature of 13°C (55°F), this humidity feels like a heavy blanket wrapping around you, making travel sluggish and slightly uncomfortable, as each step seems to cling to the damp air.
In Calvert 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 Calvert for better planning.
UV Risk Categories
Weather in Calvert varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Calvert, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 11°C (51°F) | 69 mm (2.7 inches) | 79% | moderate |
| February Weather | 12°C (53°F) | 83 mm (3.3 inches) | 80% | high |
| March Weather | 17°C (63°F) | 80 mm (3.2 inches) | 78% | very high |
| April Weather | 20°C (68°F) | 124 mm (4.9 inches) | 79% | extreme |
| May Weather | 25°C (77°F) | 159 mm (6.3 inches) | 81% | extreme |
| June Weather | 28°C (83°F) | 93 mm (3.7 inches) | 77% | extreme |
| July Weather | 30°C (86°F) | 63 mm (2.5 inches) | 71% | extreme |
| August Weather | 30°C (87°F) | 105 mm (4.1 inches) | 67% | extreme |
| September Weather | 27°C (81°F) | 111 mm (4.4 inches) | 69% | very high |
| October Weather | 22°C (71°F) | 102 mm (4.0 inches) | 73% | very high |
| November Weather | 15°C (60°F) | 70 mm (2.8 inches) | 82% | high |
| December Weather | 13°C (55°F) | 94 mm (3.7 inches) | 87% | moderate |