Last updated: June 24, 2025
In December, the average temperature in Wilkes-Barre, United States hovers around 1°C (34°F), with extremes that can dip to a chilly -17°C (2°F) or rise as high as 16°C (61°F). Expect about 83 mm (3.3 in) of precipitation, spread over 12 days, making for a rather wet month. Additionally, the air is quite humid, with an average humidity level of 85%, enhancing that crisp, cool feel.
In December, in Wilkes-Barre, the average temperature is 1°C (34°F). Maximum temperatures can reach 16°C (61°F) while minimums can drop to as low as -17°C (2°F). Be prepared for extreme temperature fluctuations if you plan to travel during this time.
In Wilkes-Barre in December, the precipitation amount is 83 mm (3.3 in) distributed over the course of 12 days.
In Wilkes-Barre in December, humidity is 85%. With an average temperature of 1°C (34°F), this humidity feels like a biting chill that seeps into your bones, making outdoor travel uncomfortable and urging you to seek warmth indoors rather than explore the surroundings.
In Wilkes-Barre 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 Wilkes-Barre, you can visit Hourly UV Index in Wilkes-Barre.
UV Risk Categories
Weather in Wilkes-Barre varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Wilkes-Barre, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -2°C (29°F) | 71 mm (2.8 inches) | 87% | moderate |
| February Weather | 0°C (32°F) | 96 mm (3.8 inches) | 85% | moderate |
| March Weather | 3°C (38°F) | 88 mm (3.5 inches) | 85% | high |
| April Weather | 9°C (49°F) | 102 mm (4.0 inches) | 83% | very high |
| May Weather | 15°C (60°F) | 122 mm (4.8 inches) | 75% | very high |
| June Weather | 20°C (68°F) | 95 mm (3.7 inches) | 73% | very high |
| July Weather | 23°C (74°F) | 118 mm (4.6 inches) | 65% | very high |
| August Weather | 22°C (72°F) | 121 mm (4.8 inches) | 62% | very high |
| September Weather | 18°C (65°F) | 102 mm (4.0 inches) | 66% | very high |
| October Weather | 13°C (55°F) | 114 mm (4.5 inches) | 79% | high |
| November Weather | 5°C (41°F) | 87 mm (3.4 inches) | 87% | moderate |
| December Weather | 1°C (34°F) | 83 mm (3.3 inches) | 85% | low |