February Weather in Saint Charles, United States

Last updated: June 24, 2025

In Saint Charles, United States, the average temperature in February hovers around 2°C (35°F). However, temperatures can vary significantly, dipping as low as -19°C (-2°F) and soaring to a maximum of 24°C (76°F). Expect 79 mm (3.1 in) of precipitation spread over about 10 days, with an average humidity of 80% that makes the air feel quite moist.

February Temperature in Saint Charles

In February in Saint Charles, the average temperature is 2°C (35°F). The maximum can reach 24°C (76°F), while the minimum can drop as low as -19°C (-2°F). Travelers should be prepared for a wide range of temperatures during their visit.

February Weather in Saint Charles: Daily Temperature Highs, Lows, and Averages

The chart illustrates February temperature patterns in Saint Charles, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Saint Charles, February typically has an average temperature of 2°C (35°F), with highs reaching up to 24°C (76°F) and lows dropping to around -19°C (-2°F).

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

February Precipitation in Saint Charles

In Saint Charles in February, the precipitation amount is 79 mm (3.1 in) over a span of 10 days.

February Precipitation Trends in Saint Charles

The chart displays monthly precipitation patterns in Saint Charles, with values for each month alongside February’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how February’s conditions compare to those of other months. In Saint Charles, February typically receives around 79 mm (3.1 inches) of precipitation spread over approximately 10 days.

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

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Millimeters (mm) Inches (in)

February Humidity in Saint Charles

In Saint Charles in February humidity is 80%. With an average temperature of 2°C (35°F), this humidity feels like a heavy, damp chill that clings to your skin, making outdoor excursions uncomfortable and your clothes feel soggy, while constantly reminding you to seek shelter indoors to escape the oppressive moisture in the air.

February Average Humidity in Saint Charles

This chart illustrates the average monthly humidity levels in Saint Charles, with February’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In February, average humidity in Saint Charles is approximately 80%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for February generated using information from the Copernicus Climate Change Service.

February UV Index in Saint Charles

In Saint Charles in February, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Saint Charles.

Maximum UV Index Levels in Saint Charles for February

The chart shows the monthly maximum UV Index (UVI) for Saint Charles in February, 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 February, the maximum UV index in Saint Charles typically reaches 5, which falls under the moderate exposure category.

Data source: Saint Charles February 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 February Weather in Saint Charles Compares to Other Months

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

This table compares monthly weather conditions in Saint Charles, showing how February’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	0°C (32°F)	74 mm (2.9 inches)	82%	moderate
February Weather	2°C (35°F)	79 mm (3.1 inches)	80%	moderate
March Weather	8°C (47°F)	130 mm (5.1 inches)	80%	high
April Weather	13°C (55°F)	124 mm (4.9 inches)	80%	very high
May Weather	19°C (67°F)	143 mm (5.6 inches)	82%	very high
June Weather	25°C (77°F)	93 mm (3.7 inches)	83%	extreme
July Weather	26°C (80°F)	95 mm (3.7 inches)	81%	very high
August Weather	25°C (76°F)	135 mm (5.3 inches)	80%	very high
September Weather	22°C (72°F)	56 mm (2.2 inches)	76%	very high
October Weather	15°C (59°F)	105 mm (4.1 inches)	76%	high
November Weather	7°C (44°F)	71 mm (2.8 inches)	85%	moderate
December Weather	4°C (39°F)	55 mm (2.2 inches)	86%	moderate