January Weather in Salem, United States

Last updated: June 24, 2025

In January, the average temperature in Salem, United States hovers around 1°C (34°F). Expect a wide range in temperatures, with a minimum of -21°C (-5°F) and a maximum of 22°C (72°F). The month sees about 98 mm (3.9 in) of precipitation spread over 12 days, contributing to an average humidity level of 88%. Stay prepared for chilly and damp conditions!

January Temperature in Salem

In January in Salem, the average temperature is 1°C (34°F). Maximum can reach 22°C (72°F) and minimum can be as low as -21°C (-5°F). Be prepared for a wide range of temperatures during your travels, and pack accordingly to ensure a comfortable experience.

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

The chart illustrates January temperature patterns in Salem, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Salem, January typically has an average temperature of 1°C (34°F), with highs reaching up to 22°C (72°F) and lows dropping to around -21°C (-5°F).

Data source: Temperature data for Salem generated using information from the Copernicus Climate Change Service.

January Precipitation in Salem

In Salem in January, the precipitation amount is 98 mm (3.9 in) over the course of 12 days.

January Precipitation Trends in Salem

The chart displays monthly precipitation patterns in Salem, 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 Salem, January typically receives around 98 mm (3.9 inches) of precipitation spread over approximately 12 days.

Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

January Humidity in Salem

In Salem in January humidity is 88%. With an average temperature of 1°C (34°F), this humidity feels like a chilling embrace, making travel feel damp and brisk, where every breath carries a crisp bite, and the air clings to your skin, urging you to seek warmth and comfort.

January Average Humidity in Salem

This chart illustrates the average monthly humidity levels in Salem, 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 Salem is approximately 88%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Salem

In Salem 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 Salem, you can check the information here.

Maximum UV Index Levels in Salem for January

The chart shows the monthly maximum UV Index (UVI) for Salem 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 Salem typically reaches 3, which falls under the moderate exposure category.

Data source: Salem 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 Salem Compares to Other Months

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

This table compares monthly weather conditions in Salem, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	1°C (34°F)	98 mm (3.9 inches)	88%	moderate
February Weather	4°C (39°F)	147 mm (5.8 inches)	88%	moderate
March Weather	7°C (45°F)	121 mm (4.8 inches)	88%	high
April Weather	12°C (54°F)	148 mm (5.8 inches)	86%	very high
May Weather	18°C (64°F)	165 mm (6.5 inches)	82%	very high
June Weather	21°C (71°F)	172 mm (6.8 inches)	84%	very high
July Weather	24°C (75°F)	143 mm (5.6 inches)	82%	very high
August Weather	23°C (73°F)	132 mm (5.2 inches)	73%	very high
September Weather	20°C (69°F)	116 mm (4.6 inches)	73%	very high
October Weather	15°C (59°F)	112 mm (4.4 inches)	81%	high
November Weather	7°C (44°F)	88 mm (3.5 inches)	89%	moderate
December Weather	4°C (39°F)	130 mm (5.1 inches)	86%	moderate