nomadseason

January Weather in Mercer, United States

Last updated: June 24, 2025

In January, the average temperature in Mercer, United States hovers around -7°C (19°F). Expect chilly conditions, with minimums plunging to -30°C (-22°F) and maximums reaching a crisp 11°C (52°F). Precipitation can be expected, totaling 85 mm (3.3 in) over 8 days, and the air is notably humid, with an average humidity level of 91%.

January Temperature in Mercer

In January in Mercer, the average temperature is -7°C (19°F). Maximums can reach 11°C (52°F), while minimums can drop as low as -30°C (-22°F). It's advisable to be well-prepared for extreme temperature variations when traveling during this period.

January Weather in Mercer: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Mercer, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mercer, January typically has an average temperature of -7°C (19°F), with highs reaching up to 11°C (52°F) and lows dropping to around -30°C (-22°F).
JanFebMarAprMayJunJulAugSepOctNovDec192129415464696860493424
Data source: Temperature data for Mercer generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

January Precipitation in Mercer

In Mercer in January, the precipitation amount is 85 mm (3.3 in) over the course of 8 days.

January Precipitation Trends in Mercer

The chart displays monthly precipitation patterns in Mercer, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Mercer, January typically receives around 85 mm (3.3 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec85847212787831218269129112116
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

January Humidity in Mercer

In Mercer in January humidity is 91%. With an average temperature of -7°C (19°F), this humidity feels like an icy blanket wrapping around you, making every breath feel heavy and cold, creating a damp chill that seeps into your bones, which can be particularly uncomfortable for travelers who are unaccustomed to such frigid conditions.

January Average Humidity in Mercer

This chart illustrates the average monthly humidity levels in Mercer, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Mercer is approximately 91%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%85%84%78%72%75%74%77%85%86%85%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Mercer

In Mercer 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 Mercer, you can visit Hourly UV Index in Mercer.

Maximum UV Index Levels in Mercer for January

The chart shows the monthly maximum UV Index (UVI) for Mercer in January, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In January, the maximum UV index in Mercer typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2458910987532
Data source: Mercer January UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How January Weather in Mercer Compares to Other Months

Weather in Mercer varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Mercer, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Mercer, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-7°C (19°F)85 mm (3.3 inches)91%low
February Weather-6°C (22°F)84 mm (3.3 inches)89%moderate
March Weather-2°C (29°F)72 mm (2.8 inches)85%moderate
April Weather5°C (42°F)127 mm (5.0 inches)84%very high
May Weather12°C (54°F)87 mm (3.4 inches)78%very high
June Weather18°C (64°F)83 mm (3.3 inches)72%very high
July Weather20°C (69°F)120 mm (4.7 inches)75%very high
August Weather20°C (68°F)82 mm (3.2 inches)74%very high
September Weather16°C (61°F)69 mm (2.7 inches)77%high
October Weather9°C (49°F)129 mm (5.1 inches)85%moderate
November Weather1°C (35°F)112 mm (4.4 inches)86%moderate
December Weather-5°C (24°F)116 mm (4.6 inches)85%low

Compare Mercer's Climate with Cities Worldwide