Last updated: June 24, 2025
In Newcastle, United States, the average temperature in January hovers around 7°C (45°F). However, be prepared for a range of temperatures, with a minimum plummeting to -13°C (8°F) and a maximum soaring to 28°C (83°F). During this time, expect about 37 mm (1.5 in) of precipitation spread over 4 days, alongside a relatively high average humidity of 77%.
In January in Newcastle, the average temperature is 7°C (45°F). The maximum can reach 28°C (83°F) while the minimum can drop as low as -13°C (8°F). Be prepared for a wide range of temperatures when traveling during this time.
In Newcastle in January, the precipitation amount is 37 mm (1.5 in) over the course of 4 days.
In Newcastle in January, humidity is 77%. With an average temperature of 7°C (45°F), this humidity feels like a damp chill that clings to your skin, making it important to dress in layers for comfort while exploring the area.
In Newcastle 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 Newcastle for better planning.
UV Risk Categories
Weather in Newcastle varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Newcastle, focusing on differences in temperature, rainfall, humidity, and UV levels.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | 7°C (45°F) | 37 mm (1.5 inches) | 77% | moderate |
February Weather | 8°C (47°F) | 44 mm (1.7 inches) | 76% | high |
March Weather | 15°C (59°F) | 71 mm (2.8 inches) | 74% | very high |
April Weather | 18°C (65°F) | 63 mm (2.5 inches) | 75% | very high |
May Weather | 24°C (75°F) | 99 mm (3.9 inches) | 80% | extreme |
June Weather | 28°C (83°F) | 57 mm (2.2 inches) | 80% | extreme |
July Weather | 30°C (87°F) | 23 mm (0.9 inches) | 75% | extreme |
August Weather | 30°C (86°F) | 48 mm (1.9 inches) | 67% | extreme |
September Weather | 26°C (79°F) | 94 mm (3.7 inches) | 64% | very high |
October Weather | 19°C (67°F) | 78 mm (3.1 inches) | 70% | very high |
November Weather | 13°C (55°F) | 33 mm (1.3 inches) | 82% | high |
December Weather | 10°C (50°F) | 41 mm (1.6 inches) | 85% | moderate |