Last updated: June 24, 2025
In December, the average temperature in Stock Island, United States is a pleasant 23°C (74°F). Daytime highs can reach up to 27°C (80°F), while the evenings cool down to a minimum of 15°C (59°F). Travelers should expect about 44 mm (1.7 in) of precipitation spread over roughly 5 days, accompanied by an average humidity of 81%, creating a refreshing yet slightly muggy atmosphere. Enjoy the balance of warmth and occasional showers!
In December in Stock Island, the average temperature is 23°C (74°F). Maximums can reach 27°C (80°F), and minimums can be as low as 15°C (59°F). This pleasant and mild climate makes Stock Island an ideal destination for travelers looking to enjoy outdoor activities and sightseeing.
In Stock Island in December, the precipitation amount is 44 mm (1.7 in) over the course of 5 days.
In Stock Island in December, humidity is 81%. With an average temperature of 23°C (74°F), this humidity feels like a warm, heavy blanket draped over your skin, making travel feel a bit more sluggish and requiring plenty of water breaks to stay comfortable.
In Stock Island in December, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Stock Island, you can refer to this Hourly UV Index in Stock Island.
UV Risk Categories
Weather in Stock Island varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Stock Island, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 22°C (71°F) | 27 mm (1.1 inches) | 81% | high |
| February Weather | 23°C (74°F) | 27 mm (1.1 inches) | 79% | very high |
| March Weather | 23°C (74°F) | 18 mm (0.7 inches) | 76% | extreme |
| April Weather | 25°C (77°F) | 40 mm (1.6 inches) | 73% | extreme |
| May Weather | 26°C (79°F) | 139 mm (5.5 inches) | 71% | extreme |
| June Weather | 28°C (82°F) | 94 mm (3.7 inches) | 69% | extreme |
| July Weather | 28°C (83°F) | 103 mm (4.0 inches) | 70% | extreme |
| August Weather | 29°C (84°F) | 100 mm (3.9 inches) | 72% | extreme |
| September Weather | 28°C (83°F) | 172 mm (6.8 inches) | 76% | extreme |
| October Weather | 27°C (81°F) | 133 mm (5.2 inches) | 79% | very high |
| November Weather | 25°C (77°F) | 83 mm (3.3 inches) | 80% | very high |
| December Weather | 23°C (74°F) | 44 mm (1.7 inches) | 81% | high |