February Weather in Alton, United States

Last updated: June 24, 2025

In February, the average temperature in Alton, United States hovers around -6°C (21°F). Conditions can vary widely, with minimums plunging to -30°C (-22°F) and maximums reaching 20°C (68°F). Expect precipitation of about 32 mm (1.3 in) over 7 days, and a noteworthy average humidity of 84%. Prepare accordingly!

February Temperature in Alton

In February in Alton, the average temperature is -6°C (21°F). Maximum temperatures can reach 20°C (68°F), while minimums can drop as low as -30°C (-22°F). Be prepared for a wide range of temperatures if you're planning to travel during this month.

February Weather in Alton: Daily Temperature Highs, Lows, and Averages

The chart illustrates February temperature patterns in Alton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Alton, February typically has an average temperature of -6°C (21°F), with highs reaching up to 20°C (68°F) and lows dropping to around -30°C (-22°F).

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

February Precipitation in Alton

In Alton in February, the precipitation amount is 32 mm (1.3 in) over the course of 7 days.

February Precipitation Trends in Alton

The chart displays monthly precipitation patterns in Alton, 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 Alton, February typically receives around 32 mm (1.3 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 Alton

In Alton in February humidity is 84%. With an average temperature of -6°C (21°F), this humidity feels like an icy blanket enveloping you, making travel uncomfortable as the cold dampness seeps into your bones and slows your movements, turning each step into a shivering struggle.

February Average Humidity in Alton

This chart illustrates the average monthly humidity levels in Alton, 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 Alton is approximately 84%, 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 Alton

In Alton 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 Alton.

Maximum UV Index Levels in Alton for February

The chart shows the monthly maximum UV Index (UVI) for Alton 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 Alton typically reaches 5, which falls under the moderate exposure category.

Data source: Alton 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 Alton Compares to Other Months

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

This table compares monthly weather conditions in Alton, showing how February’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-6°C (21°F)	26 mm (1.0 inches)	80%	low
February Weather	-6°C (21°F)	32 mm (1.3 inches)	84%	moderate
March Weather	2°C (36°F)	72 mm (2.8 inches)	75%	moderate
April Weather	8°C (46°F)	95 mm (3.7 inches)	79%	very high
May Weather	15°C (60°F)	140 mm (5.5 inches)	74%	very high
June Weather	23°C (73°F)	114 mm (4.5 inches)	81%	extreme
July Weather	24°C (76°F)	72 mm (2.8 inches)	82%	very high
August Weather	22°C (72°F)	100 mm (3.9 inches)	80%	very high
September Weather	19°C (66°F)	101 mm (4.0 inches)	75%	very high
October Weather	9°C (49°F)	82 mm (3.2 inches)	77%	moderate
November Weather	2°C (36°F)	28 mm (1.1 inches)	85%	moderate
December Weather	-3°C (27°F)	39 mm (1.5 inches)	83%	moderate