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January Weather in Seymour, United States

Last updated: June 24, 2025

In January, the average temperature in Seymour, United States hovers around 1°C (34°F). Expect minimum lows of -19°C (-3°F) and maximum highs hitting 21°C (70°F). With 80 mm (3.1 in) of precipitation spread over 8 days, be prepared for occasional showers. The average humidity is a notable 81%, creating a distinctly crisp atmosphere.

January Temperature in Seymour

In January in Seymour, the average temperature is 1°C (34°F). Maximum temperatures can reach 21°C (70°F), while the minimum can drop as low as -19°C (-3°F). Travelers should be prepared for a wide range of weather conditions, from chilly days to surprisingly warm spells.

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 (34°F), with highs reaching up to 21°C (70°F) and lows dropping to around -19°C (-3°F).
JanFebMarAprMayJunJulAugSepOctNovDec343748546574787572584540
Data source: Temperature data for Seymour generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

January Precipitation in Seymour

In Seymour in January, the precipitation amount is 80 mm (3.1 in) over a period of 8 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 80 mm (3.1 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec809414717418310285109581377263
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Seymour

In Seymour in January humidity is 81%. With an average temperature of 1°C (34°F), this humidity feels like a damp chill wrapping around you, making traveling uncomfortable as every breath feels heavy and the cold penetration intensifies with the moisture in the air.

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 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec81%78%76%78%83%83%78%68%64%70%83%87%
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.
JanFebMarAprMayJunJulAugSepOctNovDec36710101111109753
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.
 TemperaturePrecipitationHumidityUV
January Weather1°C (34°F)80 mm (3.1 inches)81%moderate
February Weather3°C (37°F)94 mm (3.7 inches)78%high
March Weather9°C (48°F)147 mm (5.8 inches)76%high
April Weather12°C (55°F)174 mm (6.9 inches)78%very high
May Weather18°C (65°F)183 mm (7.2 inches)83%very high
June Weather23°C (75°F)102 mm (4.0 inches)83%extreme
July Weather26°C (78°F)85 mm (3.3 inches)78%extreme
August Weather24°C (76°F)109 mm (4.3 inches)68%very high
September Weather22°C (72°F)58 mm (2.3 inches)64%very high
October Weather14°C (58°F)137 mm (5.4 inches)70%high
November Weather7°C (45°F)72 mm (2.8 inches)83%moderate
December Weather5°C (41°F)63 mm (2.5 inches)87%moderate

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