January Weather in Darien, United States

Last updated: June 24, 2025

In Darien, United States, the average temperature in January hovers around 12°C (55°F), with minimums dipping as low as -3°C (27°F) and maximums reaching up to 26°C (80°F). Expect about 54 mm (2.1 in) of precipitation over 6 days, contributing to an average humidity level of 84%.

January Temperature in Darien

In January in Darien, the average temperature is 12°C (55°F). Maximum temperatures can reach 26°C (80°F), while the minimum can drop as low as -3°C (27°F). Be prepared for a wide range of temperatures when traveling during this time.

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

The chart illustrates January temperature patterns in Darien, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Darien, January typically has an average temperature of 12°C (55°F), with highs reaching up to 26°C (80°F) and lows dropping to around -3°C (27°F).

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

January Precipitation in Darien

In Darien in January, the total precipitation amount is 54 mm (2.1 in) over the course of 6 days.

January Precipitation Trends in Darien

The chart displays monthly precipitation patterns in Darien, 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 Darien, January typically receives around 54 mm (2.1 inches) of precipitation spread over approximately 6 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 Darien

In Darien in January, humidity is 84%. With an average temperature of 12°C (55°F), this humidity feels like a thick blanket wrapping around you, making it a challenge for traveling as you might feel sticky and uncomfortable while exploring the sights.

January Average Humidity in Darien

This chart illustrates the average monthly humidity levels in Darien, 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 Darien 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 Darien

In Darien in January, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Darien.

Maximum UV Index Levels in Darien for January

The chart shows the monthly maximum UV Index (UVI) for Darien 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 Darien typically reaches 5, which falls under the moderate exposure category.

Data source: Darien 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 Darien Compares to Other Months

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

This table compares monthly weather conditions in Darien, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	12°C (55°F)	54 mm (2.1 inches)	84%	moderate
February Weather	15°C (59°F)	78 mm (3.1 inches)	79%	high
March Weather	17°C (63°F)	58 mm (2.3 inches)	78%	very high
April Weather	20°C (68°F)	79 mm (3.1 inches)	72%	very high
May Weather	24°C (75°F)	80 mm (3.1 inches)	72%	extreme
June Weather	26°C (79°F)	139 mm (5.5 inches)	74%	extreme
July Weather	27°C (82°F)	155 mm (6.1 inches)	82%	extreme
August Weather	27°C (81°F)	159 mm (6.3 inches)	82%	extreme
September Weather	26°C (79°F)	149 mm (5.9 inches)	83%	very high
October Weather	23°C (74°F)	76 mm (3.0 inches)	79%	very high
November Weather	17°C (62°F)	86 mm (3.4 inches)	82%	high
December Weather	14°C (57°F)	110 mm (4.3 inches)	85%	moderate