January Weather in Stamford, United States

Last updated: June 24, 2025

In January, the average temperature in Stamford, United States hovers around -5°C (24°F). Expect chilly conditions with a minimum plunge to -26°C (-15°F), while the mercury can rise to a pleasant 16°C (61°F). The area sees about 75 mm (2.9 in) of precipitation distributed over 11 days, contributing to an average humidity of 89%. Prepare for a wintry, damp atmosphere!

January Temperature in Stamford

In January in Stamford, the average temperature is -5°C (24°F), with a maximum that can reach 16°C (61°F) and a minimum that can drop as low as -26°C (-15°F). Travelers should be prepared for a wide range of temperatures and dress in layers to stay comfortable during their visit.

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

The chart illustrates January temperature patterns in Stamford, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Stamford, January typically has an average temperature of -5°C (24°F), with highs reaching up to 16°C (61°F) and lows dropping to around -26°C (-15°F).

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

January Precipitation in Stamford

In Stamford in January, the precipitation amount is 75 mm (2.9 in) over the course of 11 days.

January Precipitation Trends in Stamford

The chart displays monthly precipitation patterns in Stamford, 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 Stamford, January typically receives around 75 mm (2.9 inches) of precipitation spread over approximately 11 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 Stamford

In Stamford in January humidity is 89%. With an average temperature of -5°C (24°F), this humidity feels like an uncomfortable chill enveloping you, making outdoor activities less enjoyable and requiring extra layers to stay warm while battling the dampness in the air.

January Average Humidity in Stamford

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

In Stamford 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 Stamford, you can check the information here.

Maximum UV Index Levels in Stamford for January

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

Data source: Stamford 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 Stamford Compares to Other Months

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

This table compares monthly weather conditions in Stamford, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-5°C (24°F)	75 mm (2.9 inches)	89%	moderate
February Weather	-3°C (27°F)	93 mm (3.7 inches)	88%	moderate
March Weather	0°C (33°F)	88 mm (3.4 inches)	86%	high
April Weather	7°C (44°F)	115 mm (4.5 inches)	84%	very high
May Weather	13°C (56°F)	115 mm (4.5 inches)	76%	very high
June Weather	18°C (65°F)	99 mm (3.9 inches)	72%	very high
July Weather	21°C (70°F)	118 mm (4.6 inches)	66%	very high
August Weather	20°C (68°F)	110 mm (4.3 inches)	64%	very high
September Weather	16°C (62°F)	96 mm (3.8 inches)	72%	very high
October Weather	11°C (51°F)	137 mm (5.4 inches)	81%	high
November Weather	2°C (37°F)	94 mm (3.7 inches)	87%	moderate
December Weather	-2°C (29°F)	93 mm (3.7 inches)	84%	low