January Weather in Danbury, United States

Last updated: June 24, 2025

In January, the average temperature in Danbury, United States hovers around -1°C (30°F). Expect chilly nights with minimums dropping to -20°C (-4°F), while the days can warm up to a pleasant 18°C (65°F). You'll experience about 71 mm (2.8 in) of precipitation spread over 8 days, contributing to a relatively high average humidity of 84%. Stay prepared for the diverse weather!

January Temperature in Danbury

In January in Danbury, the average temperature is -1°C (30°F), with maximums reaching 18°C (65°F) and minimums dropping as low as -20°C (-4°F). Be prepared for a wide range of temperatures during your travels, and pack accordingly to enjoy your stay!

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

The chart illustrates January temperature patterns in Danbury, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Danbury, January typically has an average temperature of -1°C (30°F), with highs reaching up to 18°C (65°F) and lows dropping to around -20°C (-4°F).

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

January Precipitation in Danbury

In Danbury in January, the precipitation amount is 71 mm (2.8 in) over the course of 8 days.

January Precipitation Trends in Danbury

The chart displays monthly precipitation patterns in Danbury, 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 Danbury, January typically receives around 71 mm (2.8 inches) of precipitation spread over approximately 8 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 Danbury

In Danbury in January, humidity is 84%. With an average temperature of -1°C (30°F), this humidity feels like a sharp chill that seeps into your bones, making travel uncomfortable as the wetness in the air intensifies the cold, leaving you yearning for warmth and shelter.

January Average Humidity in Danbury

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

In Danbury 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 Danbury, you can check the information here.

Maximum UV Index Levels in Danbury for January

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

Data source: Danbury 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 Danbury Compares to Other Months

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

This table compares monthly weather conditions in Danbury, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-1°C (30°F)	71 mm (2.8 inches)	84%	moderate
February Weather	0°C (33°F)	97 mm (3.8 inches)	82%	moderate
March Weather	3°C (38°F)	89 mm (3.5 inches)	81%	high
April Weather	9°C (49°F)	124 mm (4.9 inches)	78%	very high
May Weather	15°C (59°F)	115 mm (4.5 inches)	69%	very high
June Weather	20°C (69°F)	102 mm (4.0 inches)	69%	very high
July Weather	24°C (75°F)	145 mm (5.7 inches)	62%	very high
August Weather	23°C (73°F)	119 mm (4.7 inches)	65%	very high
September Weather	19°C (66°F)	122 mm (4.8 inches)	68%	very high
October Weather	13°C (56°F)	147 mm (5.8 inches)	74%	high
November Weather	6°C (42°F)	93 mm (3.7 inches)	82%	moderate
December Weather	1°C (34°F)	115 mm (4.5 inches)	80%	low