January Weather in Hartford, United States

Last updated: June 24, 2025

In January, the average temperature in Hartford, United States hovers around 11°C (52°F). Expect a temperature range from a chilly -7°C (20°F) to a warm 27°C (82°F). During this time, precipitation totals approximately 90 mm (3.5 in) over the course of 7 days, accompanied by an average humidity of 83%.

January Temperature in Hartford

In January in Hartford, the average temperature is 11°C (52°F), with maximums reaching up to 27°C (82°F) and minimums dropping as low as -7°C (20°F). Travelers should be prepared for a wide range of temperatures and pack accordingly.

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

The chart illustrates January temperature patterns in Hartford, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hartford, January typically has an average temperature of 11°C (52°F), with highs reaching up to 27°C (82°F) and lows dropping to around -7°C (20°F).

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

January Precipitation in Hartford

In Hartford in January, the precipitation amount is 90 mm (3.5 in) over the course of 7 days.

January Precipitation Trends in Hartford

The chart displays monthly precipitation patterns in Hartford, 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 Hartford, January typically receives around 90 mm (3.5 inches) of precipitation spread over approximately 7 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 Hartford

In Hartford in January humidity is 83%. With an average temperature of 11°C (52°F), this humidity feels like a damp chill that can make outdoor activities uncomfortable, often leading travelers to seek shelter indoors or to dress in layered clothing to stay warm while exploring the area.

January Average Humidity in Hartford

This chart illustrates the average monthly humidity levels in Hartford, 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 Hartford is approximately 83%, 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 Hartford

In Hartford 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 Hartford.

Maximum UV Index Levels in Hartford for January

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

Data source: Hartford 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 Hartford Compares to Other Months

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

This table compares monthly weather conditions in Hartford, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	11°C (52°F)	90 mm (3.5 inches)	83%	moderate
February Weather	15°C (59°F)	117 mm (4.6 inches)	82%	very high
March Weather	17°C (63°F)	71 mm (2.8 inches)	79%	very high
April Weather	19°C (67°F)	108 mm (4.3 inches)	77%	extreme
May Weather	24°C (75°F)	102 mm (4.0 inches)	74%	extreme
June Weather	26°C (80°F)	142 mm (5.6 inches)	70%	extreme
July Weather	27°C (81°F)	132 mm (5.2 inches)	78%	extreme
August Weather	27°C (81°F)	164 mm (6.4 inches)	78%	extreme
September Weather	26°C (79°F)	115 mm (4.5 inches)	79%	very high
October Weather	22°C (72°F)	83 mm (3.3 inches)	74%	very high
November Weather	15°C (59°F)	43 mm (1.7 inches)	83%	high
December Weather	13°C (55°F)	142 mm (5.6 inches)	86%	moderate