Last updated: June 24, 2025
In January, the average temperature in Jacksonville, United States hovers around 8°C (47°F). Expect a chilly minimum of -11°C (12°F), while the mercury can rise to a pleasant 26°C (78°F). During this month, you'll likely experience 73 mm (2.9 in) of precipitation spread over 8 days, contributing to an average humidity of 85%.
In January in Jacksonville, the average temperature is 8°C (47°F). Maximums can reach 26°C (78°F), and minimums can drop to as low as -11°C (12°F). Be prepared for a wide range of temperatures and pack accordingly for your travels!
In Jacksonville in January, the precipitation amount is 73 mm (2.9 in) over a span of 8 days.
In Jacksonville in January humidity is 85%. With an average temperature of 8°C (47°F), this humidity feels like a chilly dampness that clings to your skin, making outdoor activities feel less refreshing and more uncomfortable for traveling.
In Jacksonville in January, 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 Jacksonville for better planning.
UV Risk Categories
Weather in Jacksonville varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Jacksonville, focusing on differences in temperature, rainfall, humidity, and UV levels.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | 8°C (47°F) | 73 mm (2.9 inches) | 85% | moderate |
February Weather | 11°C (52°F) | 98 mm (3.8 inches) | 82% | high |
March Weather | 13°C (55°F) | 67 mm (2.6 inches) | 81% | very high |
April Weather | 17°C (63°F) | 114 mm (4.5 inches) | 80% | very high |
May Weather | 22°C (72°F) | 122 mm (4.8 inches) | 81% | extreme |
June Weather | 25°C (77°F) | 191 mm (7.5 inches) | 81% | extreme |
July Weather | 27°C (80°F) | 176 mm (6.9 inches) | 81% | extreme |
August Weather | 26°C (79°F) | 215 mm (8.5 inches) | 80% | very high |
September Weather | 24°C (76°F) | 224 mm (8.8 inches) | 79% | very high |
October Weather | 20°C (68°F) | 69 mm (2.7 inches) | 80% | very high |
November Weather | 13°C (55°F) | 110 mm (4.3 inches) | 85% | high |
December Weather | 10°C (50°F) | 116 mm (4.6 inches) | 86% | moderate |