January Weather in Lewiston, United States

Last updated: June 24, 2025

In Lewiston, United States, the average temperature in January hovers around 0°C (32°F). However, be prepared for a wide range of temperatures, with a minimum of -23°C (-9°F) and a maximum of 12°C (54°F). This month also sees an average precipitation of 58 mm (2.3 in) spread over 12 days, contributing to a high average humidity of 89%.

January Temperature in Lewiston

In January in Lewiston, the average temperature is 0°C (32°F). Maximum can reach 12°C (54°F) and minimum can be as low as -23°C (-9°F). Travelers should come prepared for a wide range of temperatures, from chilly days to potentially freezing nights.

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

The chart illustrates January temperature patterns in Lewiston, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lewiston, January typically has an average temperature of 0°C (32°F), with highs reaching up to 12°C (54°F) and lows dropping to around -23°C (-9°F).

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

January Precipitation in Lewiston

In Lewiston in January, the precipitation amount is 58 mm (2.3 in) spread over 12 days.

January Precipitation Trends in Lewiston

The chart displays monthly precipitation patterns in Lewiston, 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 Lewiston, January typically receives around 58 mm (2.3 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 Lewiston

In Lewiston in January humidity is 89%. With an average temperature of 0°C (32°F), this humidity feels like a chilly embrace that makes every breath feel heavy and damp, turning your travel experience into a constant dance with the cold and moisture in the air, leaving you longing for warmth and comfort at every turn.

January Average Humidity in Lewiston

This chart illustrates the average monthly humidity levels in Lewiston, 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 Lewiston is approximately 89%, 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 Lewiston

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

Maximum UV Index Levels in Lewiston for January

The chart shows the monthly maximum UV Index (UVI) for Lewiston 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 Lewiston typically reaches 2, which falls under the low exposure category.

Data source: Lewiston 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 Lewiston Compares to Other Months

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

This table compares monthly weather conditions in Lewiston, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	0°C (32°F)	58 mm (2.3 inches)	89%	low
February Weather	1°C (33°F)	95 mm (3.7 inches)	89%	moderate
March Weather	5°C (41°F)	64 mm (2.5 inches)	87%	high
April Weather	9°C (49°F)	51 mm (2.0 inches)	84%	very high
May Weather	14°C (58°F)	47 mm (1.8 inches)	77%	very high
June Weather	19°C (66°F)	28 mm (1.1 inches)	78%	very high
July Weather	24°C (76°F)	3 mm (0.1 inches)	77%	very high
August Weather	24°C (75°F)	8 mm (0.3 inches)	64%	very high
September Weather	18°C (64°F)	22 mm (0.9 inches)	62%	high
October Weather	10°C (50°F)	52 mm (2.1 inches)	79%	moderate
November Weather	4°C (40°F)	65 mm (2.6 inches)	87%	moderate
December Weather	1°C (33°F)	74 mm (2.9 inches)	90%	low