Last updated: June 24, 2025
In January, the average temperature in Roslyn Heights, United States hovers around 1°C (35°F), with a minimum dipping to -17°C (2°F) and a maximum peaking at 18°C (64°F). Expect 72 mm (2.8 in) of precipitation over 8 days, accompanied by an average humidity of 84%. Prepare for a chilly, damp month that showcases the beauty of winter!
In January in Roslyn Heights, the average temperature is 1°C (35°F). The maximum can reach 18°C (64°F) and the minimum can be as low as -17°C (2°F). Pack accordingly and be prepared for a wide range of temperatures when traveling to Roslyn Heights during this month.
In Roslyn Heights in January, the precipitation amount is 72 mm (2.8 in) over the course of 8 days.
In Roslyn Heights in January humidity is 84%. With an average temperature of 1°C (35°F), this humidity feels like a cold, damp chill that seeps into your bones, making it feel much colder than the thermometer suggests, which can be quite uncomfortable for traveling.
In Roslyn Heights in January, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Roslyn Heights, you can check the information here.
UV Risk Categories
Weather in Roslyn Heights varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Roslyn Heights, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 1°C (35°F) | 72 mm (2.8 inches) | 84% | moderate |
| February Weather | 2°C (37°F) | 106 mm (4.2 inches) | 82% | moderate |
| March Weather | 5°C (42°F) | 98 mm (3.9 inches) | 81% | high |
| April Weather | 10°C (51°F) | 115 mm (4.5 inches) | 78% | very high |
| May Weather | 16°C (61°F) | 117 mm (4.6 inches) | 69% | very high |
| June Weather | 22°C (71°F) | 89 mm (3.5 inches) | 69% | very high |
| July Weather | 25°C (78°F) | 142 mm (5.6 inches) | 62% | very high |
| August Weather | 24°C (76°F) | 124 mm (4.9 inches) | 65% | very high |
| September Weather | 21°C (70°F) | 91 mm (3.6 inches) | 68% | very high |
| October Weather | 16°C (61°F) | 130 mm (5.1 inches) | 74% | high |
| November Weather | 8°C (47°F) | 90 mm (3.5 inches) | 82% | moderate |
| December Weather | 4°C (39°F) | 117 mm (4.6 inches) | 80% | low |