Last updated: June 24, 2025
In January, the average temperature in Warsaw, United States hovers around -2°C (28°F). Temperatures can swing dramatically, with minimums plummeting to -28°C (-18°F) and maximums reaching a mild 17°C (64°F). During this time, expect about 73 mm (2.9 in) of precipitation spread over 8 days, complemented by a high average humidity of 85%.
In January in Warsaw, the average temperature is -2°C (28°F). The maximum can reach 17°C (64°F), and the minimum can be as low as -28°C (-18°F). Travelers should be prepared for a wide range of temperatures during this time, ranging from mild days to extremely cold nights.
In Warsaw in January, the precipitation amount is 73 mm (2.9 in) over a span of 8 days.
In Warsaw in January, humidity is 85%. With an average temperature of -2°C (28°F), this humidity feels like an icy grip that clings uncomfortably to your skin, making every step feel heavier and hastening the chill that seeps into your bones, discouraging long outdoor excursions and leaving you yearning for warmth and shelter.
In Warsaw 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 Warsaw, you can check the information here.
UV Risk Categories
Weather in Warsaw varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Warsaw, focusing on differences in temperature, rainfall, humidity, and UV levels.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | -2°C (28°F) | 73 mm (2.9 inches) | 85% | moderate |
February Weather | -1°C (30°F) | 77 mm (3.0 inches) | 85% | moderate |
March Weather | 4°C (40°F) | 105 mm (4.1 inches) | 86% | high |
April Weather | 9°C (49°F) | 97 mm (3.8 inches) | 87% | very high |
May Weather | 16°C (62°F) | 134 mm (5.3 inches) | 81% | very high |
June Weather | 22°C (72°F) | 113 mm (4.4 inches) | 82% | very high |
July Weather | 24°C (76°F) | 116 mm (4.6 inches) | 81% | very high |
August Weather | 23°C (73°F) | 103 mm (4.1 inches) | 79% | very high |
September Weather | 20°C (68°F) | 74 mm (2.9 inches) | 78% | very high |
October Weather | 13°C (56°F) | 113 mm (4.5 inches) | 81% | high |
November Weather | 5°C (40°F) | 80 mm (3.2 inches) | 89% | moderate |
December Weather | 1°C (34°F) | 62 mm (2.5 inches) | 86% | low |