Last updated: June 24, 2025
In December, the average temperature in Klamath, United States hovers around 7°C (45°F), with extremes ranging from a chilly -2°C (28°F) to a warm 18°C (65°F). Expect heavy precipitation, totaling 223 mm (8.8 in) over 14 days, and a high average humidity of 86%. Prepare for a moody climate as you navigate through the month!
In December in Klamath, the average temperature is 7°C (45°F). Maximum temperatures can reach 18°C (65°F), while minimums can drop as low as -2°C (28°F). It's a great time to visit if you enjoy mild weather with the possibility of cooler days, so be sure to pack layers for your travels!
In Klamath in December, the total precipitation amount is 223 mm (8.8 in) over a span of 14 days, indicating a significant rainfall during that period.
In Klamath in December, humidity is 86%. With an average temperature of 7°C (45°F), this humidity feels like a damp chill that seeps into your bones, making outdoor exploration a bit uncomfortable and necessitating cozy layers to stay warm while navigating the moist air.
In Klamath 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 Klamath, you can visit Hourly UV Index in Klamath.
UV Risk Categories
Weather in Klamath varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Klamath, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 7°C (45°F) | 296 mm (11.7 inches) | 86% | moderate |
| February Weather | 7°C (44°F) | 267 mm (10.5 inches) | 85% | moderate |
| March Weather | 7°C (46°F) | 218 mm (8.6 inches) | 85% | high |
| April Weather | 9°C (49°F) | 151 mm (5.9 inches) | 82% | very high |
| May Weather | 11°C (53°F) | 69 mm (2.7 inches) | 81% | very high |
| June Weather | 14°C (58°F) | 32 mm (1.3 inches) | 79% | extreme |
| July Weather | 16°C (61°F) | 3 mm (0.1 inches) | 70% | very high |
| August Weather | 17°C (62°F) | 5 mm (0.2 inches) | 60% | very high |
| September Weather | 15°C (60°F) | 52 mm (2.0 inches) | 62% | very high |
| October Weather | 12°C (54°F) | 85 mm (3.4 inches) | 72% | high |
| November Weather | 9°C (49°F) | 198 mm (7.8 inches) | 87% | moderate |
| December Weather | 7°C (45°F) | 223 mm (8.8 inches) | 86% | low |