February Weather in Saint Louis, United States

Last updated: June 24, 2025

In February, the average temperature in Saint Louis, United States hovers around -4°C (25°F), with potential extremes ranging from a chilly -25°C (-12°F) to a mild 18°C (66°F). Expect around 59 mm (2.3 in) of precipitation over 9 days, accompanied by a high average humidity of 87%. Prepare for varied weather conditions!

February Temperature in Saint Louis

In February in Saint Louis, the average temperature is -4°C (25°F). The maximum can reach 18°C (66°F) and the minimum can be as low as -25°C (-12°F). Travelers should be prepared for a wide range of temperatures and pack accordingly.

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

The chart illustrates February temperature patterns in 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 Saint Louis, February typically has an average temperature of -4°C (25°F), with highs reaching up to 18°C (66°F) and lows dropping to around -25°C (-12°F).

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

February Precipitation in Saint Louis

In Saint Louis in February, the precipitation amount is 59 mm (2.3 in) over the course of 9 days.

February Precipitation Trends in Saint Louis

The chart displays monthly precipitation patterns in Saint Louis, 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 Louis, February typically receives around 59 mm (2.3 inches) of precipitation spread over approximately 9 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 Louis

In Saint Louis in February humidity is 87%. With an average temperature of -4°C (25°F), this humidity feels like a biting chill that clings to your skin, making every step outside feel like an endeavor as the cold damp air numbs your senses and weighs you down, creating an atmosphere that is both invigorating and challenging for traveling.

February Average Humidity in Saint Louis

This chart illustrates the average monthly humidity levels in Saint Louis, 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 Louis is approximately 87%, 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 Louis

In Saint Louis 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 Louis for better planning.

Maximum UV Index Levels in Saint Louis for February

The chart shows the monthly maximum UV Index (UVI) for Saint Louis 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 Louis typically reaches 4, which falls under the moderate exposure category.

Data source: Saint Louis 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 Louis Compares to Other Months

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

This table compares monthly weather conditions in Saint Louis, showing how February’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-4°C (24°F)	55 mm (2.2 inches)	88%	low
February Weather	-4°C (25°F)	59 mm (2.3 inches)	87%	moderate
March Weather	2°C (35°F)	58 mm (2.3 inches)	85%	moderate
April Weather	7°C (46°F)	86 mm (3.4 inches)	86%	very high
May Weather	15°C (59°F)	115 mm (4.5 inches)	80%	very high
June Weather	20°C (69°F)	113 mm (4.5 inches)	80%	very high
July Weather	23°C (74°F)	67 mm (2.7 inches)	80%	very high
August Weather	22°C (71°F)	81 mm (3.2 inches)	80%	very high
September Weather	18°C (64°F)	98 mm (3.9 inches)	80%	high
October Weather	11°C (52°F)	120 mm (4.7 inches)	84%	moderate
November Weather	3°C (38°F)	57 mm (2.2 inches)	89%	moderate
December Weather	-1°C (31°F)	63 mm (2.5 inches)	86%	low