Last updated: June 24, 2025
In December, the average temperature in Middletown, United States hovers around 2°C (36°F). Expect a chilly range with minimums dipping to -22°C (-7°F) and maximums peaking at 17°C (64°F). During this month, 79 mm (3.1 in) of precipitation falls over approximately 11 days, accompanied by an average humidity of 87%. Bundle up and prepare for a blend of cold and damp!
In December in Middletown, the average temperature is 2°C (36°F). The maximum can reach 17°C (64°F), and the minimum can be as low as -22°C (-7°F). Be prepared for a wide range of temperatures, making it essential to pack accordingly for your travels.
In Middletown in December, the total precipitation amount is 79 mm (3.1 in), falling over the course of 11 days.
In Middletown in December, humidity is 87%. With an average temperature of 2°C (36°F), this humidity feels like an unwelcome chill that seeps into your bones, making outdoor exploration feel damp and heavy, and encouraging travelers to seek the warmth of indoor attractions instead.
In Middletown 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 Middletown, you can check the information here.
UV Risk Categories
Weather in Middletown varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Middletown, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -1°C (30°F) | 80 mm (3.2 inches) | 87% | moderate |
| February Weather | 0°C (33°F) | 98 mm (3.8 inches) | 85% | moderate |
| March Weather | 6°C (42°F) | 124 mm (4.9 inches) | 86% | high |
| April Weather | 11°C (52°F) | 98 mm (3.9 inches) | 84% | very high |
| May Weather | 18°C (64°F) | 138 mm (5.4 inches) | 79% | very high |
| June Weather | 22°C (73°F) | 112 mm (4.4 inches) | 82% | extreme |
| July Weather | 24°C (76°F) | 114 mm (4.5 inches) | 79% | very high |
| August Weather | 23°C (74°F) | 89 mm (3.5 inches) | 70% | very high |
| September Weather | 21°C (69°F) | 84 mm (3.3 inches) | 69% | very high |
| October Weather | 14°C (57°F) | 102 mm (4.0 inches) | 76% | high |
| November Weather | 5°C (42°F) | 92 mm (3.6 inches) | 88% | moderate |
| December Weather | 2°C (36°F) | 79 mm (3.1 inches) | 87% | moderate |