Last updated: June 24, 2025
In January, the average temperature in Watertown, United States hovers around 0°C (32°F), with extremes ranging from a brisk -19°C (-3°F) to a comfortable 19°C (67°F). Expect about 69 mm (2.7 in) of precipitation over 8 days, contributing to a relatively high average humidity of 84%.
In January in Watertown, the average temperature is 0°C (32°F). The maximum can reach 19°C (67°F), while the minimum can drop as low as -19°C (-3°F). Be sure to pack both warm clothing and lighter layers to accommodate the range of temperatures during your travels.
In Watertown in January, the precipitation amount is 69 mm (2.7 in) that falls over a period of 8 days.
In Watertown in January, humidity is 84%. With an average temperature of 0°C (32°F), this humidity feels like a cold, damp chill that seeps into your clothes, making traveling uncomfortable and necessitating extra layers to stay warm despite the moisture-laden air.
In Watertown 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 Watertown, you can check the information here.
UV Risk Categories
Weather in Watertown varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Watertown, focusing on differences in temperature, rainfall, humidity, and UV levels.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | 0°C (32°F) | 69 mm (2.7 inches) | 84% | moderate |
February Weather | 1°C (34°F) | 93 mm (3.7 inches) | 82% | moderate |
March Weather | 4°C (39°F) | 91 mm (3.6 inches) | 81% | high |
April Weather | 9°C (49°F) | 130 mm (5.1 inches) | 78% | very high |
May Weather | 15°C (60°F) | 110 mm (4.3 inches) | 69% | very high |
June Weather | 20°C (69°F) | 99 mm (3.9 inches) | 69% | very high |
July Weather | 24°C (75°F) | 143 mm (5.6 inches) | 62% | very high |
August Weather | 23°C (74°F) | 94 mm (3.7 inches) | 65% | very high |
September Weather | 19°C (67°F) | 105 mm (4.1 inches) | 68% | very high |
October Weather | 14°C (57°F) | 138 mm (5.4 inches) | 74% | high |
November Weather | 6°C (44°F) | 93 mm (3.7 inches) | 82% | moderate |
December Weather | 2°C (36°F) | 124 mm (4.9 inches) | 80% | low |