February Weather in Alton, United States

Last updated: June 24, 2025

In February, the average temperature in Alton, United States hovers around 1°C (35°F). Be prepared for a spectrum of weather, as temperatures can plunge to a chilling -19°C (-2°F) or rise to a pleasant 24°C (75°F). During this month, you can expect about 78 mm (3.1 in) of precipitation spread over 10 days, adding to the average humidity of 80%. Stay cozy and enjoy the seasonal charm!

February Temperature in Alton

In February in Alton, the average temperature is 1°C (35°F). Maximums can reach 24°C (75°F), while minimums can drop as low as -19°C (-2°F). Be prepared for a wide range of temperatures to ensure a comfortable travel experience.

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 1°C (35°F), with highs reaching up to 24°C (75°F) and lows dropping to around -19°C (-2°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 78 mm (3.1 in) over the course of 10 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 78 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 Alton

In Alton in February, humidity is 80%. With an average temperature of 1°C (35°F), this humidity feels like a cold, damp embrace that makes traveling quite uncomfortable, as it seeps into your clothes and makes the air feel heavier, making it hard to stay warm and dry while exploring.

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 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 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	0°C (32°F)	73 mm (2.9 inches)	82%	moderate
February Weather	1°C (35°F)	78 mm (3.1 inches)	80%	moderate
March Weather	8°C (46°F)	132 mm (5.2 inches)	80%	high
April Weather	12°C (55°F)	123 mm (4.9 inches)	80%	very high
May Weather	19°C (67°F)	150 mm (5.9 inches)	82%	very high
June Weather	25°C (77°F)	101 mm (4.0 inches)	83%	extreme
July Weather	26°C (79°F)	96 mm (3.8 inches)	81%	extreme
August Weather	24°C (76°F)	119 mm (4.7 inches)	80%	very high
September Weather	22°C (72°F)	67 mm (2.6 inches)	76%	very high
October Weather	15°C (59°F)	100 mm (3.9 inches)	76%	high
November Weather	6°C (44°F)	70 mm (2.8 inches)	85%	moderate
December Weather	3°C (38°F)	54 mm (2.1 inches)	86%	moderate