January Weather in Seymour, United States

Last updated: June 24, 2025

In January, the average temperature in Seymour, United States hovers around 1°C (33°F). However, be prepared for fluctuations, as it can dip to a chilling -20°C (-3°F) or rise to a comfortable 19°C (66°F). The region experiences a moderate precipitation level of 82 mm (3.2 in) over the course of 9 days, keeping the environment lush. With an average humidity of 87%, you can expect a rather damp atmosphere throughout the month.

January Temperature in Seymour

In January in Seymour, the average temperature is 1°C (33°F). Maximums can reach 19°C (66°F) and minimums can be as low as -20°C (-3°F). Travelers should be prepared for a wide range of temperatures and dress in layers to stay comfortable.

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

The chart illustrates January temperature patterns in Seymour, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Seymour, January typically has an average temperature of 1°C (33°F), with highs reaching up to 19°C (66°F) and lows dropping to around -20°C (-3°F).

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

January Precipitation in Seymour

In Seymour in January, the total precipitation amount is 82 mm (3.2 in), occurring over a span of 9 days.

January Precipitation Trends in Seymour

The chart displays monthly precipitation patterns in Seymour, 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 Seymour, January typically receives around 82 mm (3.2 inches) of precipitation spread over approximately 9 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 Seymour

In Seymour in January, humidity is 87%. With an average temperature of 1°C (33°F), this humidity feels like a chilling blanket, making traveling uncomfortable as the cold air clings to your skin, amplifying the frosty bite and dampness that can quickly lead to a sense of unease.

January Average Humidity in Seymour

This chart illustrates the average monthly humidity levels in Seymour, 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 Seymour is approximately 87%, 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 Seymour

In Seymour 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 Seymour, you can check the information here.

Maximum UV Index Levels in Seymour for January

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

Data source: Seymour 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 Seymour Compares to Other Months

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

This table compares monthly weather conditions in Seymour, 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 (33°F)	82 mm (3.2 inches)	87%	moderate
February Weather	3°C (37°F)	109 mm (4.3 inches)	85%	moderate
March Weather	7°C (46°F)	138 mm (5.4 inches)	86%	high
April Weather	12°C (55°F)	121 mm (4.8 inches)	84%	very high
May Weather	19°C (66°F)	133 mm (5.2 inches)	79%	very high
June Weather	24°C (75°F)	126 mm (5.0 inches)	82%	extreme
July Weather	26°C (78°F)	102 mm (4.0 inches)	79%	very high
August Weather	24°C (76°F)	98 mm (3.9 inches)	70%	very high
September Weather	22°C (71°F)	86 mm (3.4 inches)	69%	very high
October Weather	15°C (59°F)	97 mm (3.8 inches)	76%	high
November Weather	6°C (44°F)	98 mm (3.9 inches)	88%	moderate
December Weather	4°C (39°F)	100 mm (3.9 inches)	87%	moderate