January Weather in Lake Saint Louis, United States

Last updated: June 24, 2025

In January, the average temperature in Lake Saint Louis, United States hovers around 0°C (32°F), with extremes ranging from a chilly -22°C (-6°F) to a warm 19°C (67°F). Expect about 72 mm (2.9 in) of precipitation over approximately 7 days, while the air remains comfortably humid with an average humidity of 82%.

January Temperature in Lake Saint Louis

In January in Lake Saint Louis, the average temperature is 0°C (32°F). Maximum temperatures can reach up to 19°C (67°F), while minimum temperatures can drop as low as -22°C (-6°F). Be prepared for a wide range of temperatures when traveling during this month, and pack accordingly!

January Weather in Lake Saint Louis: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Lake Saint Louis, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lake Saint Louis, January typically has an average temperature of 0°C (32°F), with highs reaching up to 19°C (67°F) and lows dropping to around -22°C (-6°F).

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

January Precipitation in Lake Saint Louis

In Lake Saint Louis in January, the precipitation amount is 72 mm (2.9 in) over the course of 7 days.

January Precipitation Trends in Lake Saint Louis

The chart displays monthly precipitation patterns in Lake Saint Louis, 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 Lake Saint Louis, January typically receives around 72 mm (2.9 inches) of precipitation spread over approximately 7 days.

Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

January Humidity in Lake Saint Louis

In Lake Saint Louis in January, humidity is 82%. With an average temperature of 0°C (32°F), this humidity feels like an icy breath enveloping you, making each step outdoors a challenge as the cold dampness seeps into your clothes, chilling you to the bone and sapping your energy while traveling.

January Average Humidity in Lake Saint Louis

This chart illustrates the average monthly humidity levels in Lake Saint Louis, 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 Lake Saint Louis is approximately 82%, 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 Lake Saint Louis

In Lake Saint Louis 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 Lake Saint Louis, you can check the information here.

Maximum UV Index Levels in Lake Saint Louis for January

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

Data source: Lake Saint Louis 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 Lake Saint Louis Compares to Other Months

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

This table compares monthly weather conditions in Lake Saint Louis, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	0°C (32°F)	72 mm (2.9 inches)	82%	moderate
February Weather	2°C (35°F)	78 mm (3.1 inches)	80%	moderate
March Weather	8°C (47°F)	128 mm (5.0 inches)	80%	high
April Weather	13°C (55°F)	121 mm (4.8 inches)	80%	very high
May Weather	19°C (67°F)	145 mm (5.7 inches)	82%	very high
June Weather	25°C (76°F)	84 mm (3.3 inches)	83%	extreme
July Weather	26°C (80°F)	97 mm (3.8 inches)	81%	extreme
August Weather	24°C (76°F)	139 mm (5.5 inches)	80%	very high
September Weather	22°C (72°F)	56 mm (2.2 inches)	76%	very high
October Weather	15°C (59°F)	110 mm (4.3 inches)	76%	high
November Weather	7°C (44°F)	68 mm (2.7 inches)	85%	moderate
December Weather	4°C (39°F)	52 mm (2.1 inches)	86%	moderate