Last updated: June 24, 2025
In January, the average temperature in East Rochester, United States hovers around -3°C (27°F). However, residents can experience a broad range, with temperatures dipping as low as -22°C (-7°F) and peaking at a pleasant 17°C (64°F). Expect precipitation of about 76 mm (3.0 in) spread over 12 days, accompanied by a high average humidity of 91%.
In January in East Rochester, the average temperature is -3°C (27°F), with a maximum that can reach 17°C (64°F) and a minimum that can drop to as low as -22°C (-7°F). It's advisable to pack warm clothing and be prepared for a range of temperatures if you're planning to travel during this time.
In East Rochester in January, the total precipitation amount is 76 mm (3.0 in), occurring over the course of 12 days.
In East Rochester in January humidity is 91%. With an average temperature of -3°C (27°F), this humidity feels like a thick, icy blanket wrapping around you, making travel quite uncomfortable as every breath is a mix of frigid air and moisture, and the cold dampness clings to your skin, turning even short outings into a test of endurance.
In East Rochester in January, 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 East Rochester, you can visit Hourly UV Index in East Rochester.
UV Risk Categories
Weather in East Rochester varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in East Rochester, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -3°C (27°F) | 76 mm (3.0 inches) | 91% | low |
| February Weather | -2°C (29°F) | 79 mm (3.1 inches) | 91% | moderate |
| March Weather | 2°C (35°F) | 73 mm (2.9 inches) | 88% | moderate |
| April Weather | 8°C (46°F) | 112 mm (4.4 inches) | 88% | very high |
| May Weather | 15°C (59°F) | 109 mm (4.3 inches) | 82% | very high |
| June Weather | 20°C (68°F) | 83 mm (3.3 inches) | 79% | very high |
| July Weather | 23°C (73°F) | 140 mm (5.5 inches) | 77% | very high |
| August Weather | 22°C (71°F) | 95 mm (3.8 inches) | 72% | very high |
| September Weather | 18°C (65°F) | 73 mm (2.9 inches) | 76% | high |
| October Weather | 12°C (54°F) | 140 mm (5.5 inches) | 83% | moderate |
| November Weather | 4°C (40°F) | 84 mm (3.3 inches) | 88% | moderate |
| December Weather | 0°C (32°F) | 85 mm (3.3 inches) | 87% | low |