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January Weather in Jackson, United States

Last updated: June 24, 2025

In January, the average temperature in Jackson, United States hovers around 5°C (42°F), with a remarkable range where the minimum can dip to -18°C (-1°F) and the maximum can reach up to 23°C (74°F). Visitors should be prepared for a fairly wet month, as precipitation averages 102 mm (4.0 in) over approximately 8 days, contributing to an average humidity of 86%.

January Temperature in Jackson

In January in Jackson, the average temperature is 5°C (42°F). Maximum temperatures can reach 23°C (74°F), while minimums can drop as low as -18°C (-1°F). Travelers should be prepared for a wide range of temperatures, ensuring to pack for both cold and warm conditions.

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

The chart illustrates January temperature patterns in Jackson, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Jackson, January typically has an average temperature of 5°C (42°F), with highs reaching up to 23°C (74°F) and lows dropping to around -18°C (-1°F).
JanFebMarAprMayJunJulAugSepOctNovDec414554607178817975645046
Data source: Temperature data for Jackson generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

January Precipitation in Jackson

In Jackson in January, the precipitation amount is 102 mm (4.0 in) over the course of 8 days.

January Precipitation Trends in Jackson

The chart displays monthly precipitation patterns in Jackson, 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 Jackson, January typically receives around 102 mm (4.0 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec10218016615311310713211011911882145
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Jackson

In Jackson in January, humidity is 86%. With an average temperature of 5°C (42°F), this humidity feels like a damp chill that penetrates your layers, making outdoor activities quite uncomfortable and prompting you to seek warmth indoors more often.

January Average Humidity in Jackson

This chart illustrates the average monthly humidity levels in Jackson, 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 Jackson is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%85%84%81%83%83%80%74%70%73%85%88%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Jackson

In Jackson in January, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Jackson for better planning.

Maximum UV Index Levels in Jackson for January

The chart shows the monthly maximum UV Index (UVI) for Jackson 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 Jackson typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46710111111109753
Data source: Jackson 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 Jackson Compares to Other Months

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

This table compares monthly weather conditions in Jackson, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (42°F)102 mm (4.0 inches)86%moderate
February Weather7°C (46°F)180 mm (7.1 inches)85%high
March Weather12°C (54°F)166 mm (6.5 inches)84%high
April Weather16°C (60°F)153 mm (6.0 inches)81%very high
May Weather21°C (71°F)113 mm (4.4 inches)83%extreme
June Weather25°C (78°F)107 mm (4.2 inches)83%extreme
July Weather27°C (81°F)132 mm (5.2 inches)80%extreme
August Weather26°C (79°F)110 mm (4.3 inches)73%very high
September Weather24°C (75°F)119 mm (4.7 inches)70%very high
October Weather18°C (64°F)118 mm (4.6 inches)73%high
November Weather10°C (50°F)82 mm (3.2 inches)85%moderate
December Weather8°C (46°F)145 mm (5.7 inches)88%moderate

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