January Weather in Littleton, United States

Last updated: June 24, 2025

In January, the average temperature in Littleton, United States hovers around 6°C (42°F), with a chilly minimum of -18°C (0°F) and a warm maximum reaching up to 24°C (76°F). Expect 89 mm (3.5 in) of precipitation over about 9 days, contributing to an average humidity level of 84%. Enjoy the diverse weather but don’t forget to prepare for the unexpected!

January Temperature in Littleton

In January in Littleton, the average temperature is 6°C (42°F). Maximums can reach 24°C (76°F), while minimums can plunge as low as -18°C (0°F). Travelers should be prepared for a wide range of temperatures and pack accordingly.

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

The chart illustrates January temperature patterns in Littleton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Littleton, January typically has an average temperature of 6°C (42°F), with highs reaching up to 24°C (76°F) and lows dropping to around -18°C (0°F).

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

January Precipitation in Littleton

In Littleton in January, the precipitation amount is 89 mm (3.5 in) during a span of 9 days.

January Precipitation Trends in Littleton

The chart displays monthly precipitation patterns in Littleton, 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 Littleton, January typically receives around 89 mm (3.5 inches) of precipitation spread over approximately 9 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

January Humidity in Littleton

In Littleton in January humidity is 84%. With an average temperature of 6°C (42°F), this humidity feels like an uncomfortable chill that seeps into your bones, making travel less enjoyable as you find yourself bundled up yet still damp, longing for warmth and comfort.

January Average Humidity in Littleton

This chart illustrates the average monthly humidity levels in Littleton, 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 Littleton is approximately 84%, 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 Littleton

In Littleton 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 Littleton for better planning.

Maximum UV Index Levels in Littleton for January

The chart shows the monthly maximum UV Index (UVI) for Littleton 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 Littleton typically reaches 4, which falls under the moderate exposure category.

Data source: Littleton 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 Littleton Compares to Other Months

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

This table compares monthly weather conditions in Littleton, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	6°C (42°F)	89 mm (3.5 inches)	84%	moderate
February Weather	8°C (47°F)	110 mm (4.3 inches)	84%	high
March Weather	11°C (52°F)	86 mm (3.4 inches)	84%	very high
April Weather	16°C (61°F)	104 mm (4.1 inches)	82%	very high
May Weather	21°C (70°F)	124 mm (4.9 inches)	82%	very high
June Weather	24°C (76°F)	128 mm (5.0 inches)	83%	extreme
July Weather	27°C (80°F)	116 mm (4.6 inches)	79%	extreme
August Weather	26°C (78°F)	151 mm (5.9 inches)	77%	very high
September Weather	23°C (74°F)	115 mm (4.5 inches)	75%	very high
October Weather	18°C (65°F)	96 mm (3.8 inches)	81%	very high
November Weather	10°C (51°F)	80 mm (3.2 inches)	87%	moderate
December Weather	8°C (46°F)	97 mm (3.8 inches)	85%	moderate