February Weather in Saint Charles, United States

Last updated: June 24, 2025

In February, the average temperature in Saint Charles, United States hovers around -7°C (19°F). Temperature extremes can plunge to a bone-chilling -34°C (-30°F) or rise to a mild 17°C (62°F). Be prepared for about 48 mm (1.9 in) of precipitation over 7 days, and expect an average humidity of 85%, making it a truly crisp and wet month.

February Temperature in Saint Charles

In February in Saint Charles, the average temperature is -7°C (19°F). The maximum can reach 17°C (62°F), while the minimum can drop as low as -34°C (-30°F). It's essential to prepare for a wide range of temperatures when traveling to Saint Charles during this time.

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 -7°C (19°F), with highs reaching up to 17°C (62°F) and lows dropping to around -34°C (-30°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 total precipitation amount is 48 mm (1.9 in) over a span of 7 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 48 mm (1.9 inches) of precipitation spread over approximately 7 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

February Humidity in Saint Charles

In Saint Charles in February, humidity is 85%. With an average temperature of -7°C (19°F), this humidity feels like a biting chill that permeates your clothes, making any outdoor travel uncomfortable and requiring careful planning to stay warm and dry.

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 85%, 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 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Saint Charles for better planning.

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 4, 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	-8°C (18°F)	36 mm (1.4 inches)	84%	moderate
February Weather	-7°C (19°F)	48 mm (1.9 inches)	85%	moderate
March Weather	1°C (34°F)	57 mm (2.2 inches)	84%	moderate
April Weather	7°C (44°F)	86 mm (3.4 inches)	83%	very high
May Weather	15°C (59°F)	152 mm (6.0 inches)	75%	very high
June Weather	21°C (71°F)	151 mm (5.9 inches)	79%	very high
July Weather	23°C (74°F)	103 mm (4.1 inches)	75%	very high
August Weather	21°C (70°F)	126 mm (5.0 inches)	69%	very high
September Weather	18°C (64°F)	117 mm (4.6 inches)	74%	very high
October Weather	9°C (49°F)	118 mm (4.7 inches)	79%	moderate
November Weather	1°C (34°F)	52 mm (2.0 inches)	88%	moderate
December Weather	-4°C (26°F)	43 mm (1.7 inches)	82%	low