January Weather in Lagny-le-Sec, France

Last updated: August 23, 2025

In Lagny-le-Sec, France, the average temperature in January hovers around 4°C (40°F). While you might experience minimums of -7°C (20°F), there are also days where temperatures can reach a pleasant maximum of 14°C (58°F). Be prepared for some rain, as precipitation averages about 64 mm (2.5 in) over 11 days. Don't forget your umbrella, as the average humidity is a cozy 91%!

January Temperature in Lagny-le-Sec

In January in Lagny-le-Sec, the average temperature is 4°C (40°F), with maximums reaching up to 14°C (58°F) and minimums dropping as low as -7°C (20°F). Be prepared for chilly weather and pack layers if you're planning to visit during this time.

January Weather in Lagny-le-Sec: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Lagny-le-Sec, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lagny-le-Sec, January typically has an average temperature of 4°C (40°F), with highs reaching up to 14°C (58°F) and lows dropping to around -7°C (20°F).

Data source: Temperature data for Lagny-le-Sec generated using information from the Copernicus Climate Change Service.

January Precipitation in Lagny-le-Sec

In Lagny-le-Sec in January, the total precipitation amount is 64 mm (2.5 in) spread over 11 days.

January Precipitation Trends in Lagny-le-Sec

The chart displays monthly precipitation patterns in Lagny-le-Sec, 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 Lagny-le-Sec, January typically receives around 64 mm (2.5 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 Lagny-le-Sec

In Lagny-le-Sec in January, humidity is 91%. With an average temperature of 4°C (40°F), this humidity feels like a chilly dampness that clings to your skin, making outdoor travel uncomfortable and necessitating extra layers for warmth.

January Average Humidity in Lagny-le-Sec

This chart illustrates the average monthly humidity levels in Lagny-le-Sec, 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 Lagny-le-Sec is approximately 91%, 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 Lagny-le-Sec

In Lagny-le-Sec in January, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Lagny-le-Sec, you can visit Hourly UV Index in Lagny-le-Sec.

Maximum UV Index Levels in Lagny-le-Sec for January

The chart shows the monthly maximum UV Index (UVI) for Lagny-le-Sec 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 Lagny-le-Sec typically reaches 2, which falls under the low exposure category.

Data source: Lagny-le-Sec 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 Lagny-le-Sec Compares to Other Months

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

This table compares monthly weather conditions in Lagny-le-Sec, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	4°C (40°F)	64 mm (2.5 inches)	91%	low
February Weather	6°C (43°F)	73 mm (2.9 inches)	89%	moderate
March Weather	8°C (47°F)	76 mm (3.0 inches)	86%	moderate
April Weather	11°C (52°F)	33 mm (1.3 inches)	84%	high
May Weather	14°C (58°F)	68 mm (2.7 inches)	82%	very high
June Weather	19°C (66°F)	64 mm (2.5 inches)	82%	very high
July Weather	20°C (69°F)	53 mm (2.1 inches)	80%	very high
August Weather	20°C (68°F)	61 mm (2.4 inches)	76%	high
September Weather	17°C (62°F)	48 mm (1.9 inches)	81%	high
October Weather	13°C (55°F)	82 mm (3.2 inches)	88%	moderate
November Weather	8°C (46°F)	69 mm (2.7 inches)	92%	low
December Weather	6°C (43°F)	112 mm (4.4 inches)	93%	low