February Weather in Crystal Lake, United States

Last updated: June 24, 2025

In February, the average temperature in Crystal Lake, United States hovers around 20°C (68°F). During this month, temperatures can fluctuate, with a minimum of 2°C (36°F) and a maximum of 31°C (88°F). Expect a precipitation amount of 59 mm (2.3 in) spread over about 7 days, paired with an average humidity of 80%, creating a lush and vibrant atmosphere.

February Temperature in Crystal Lake

In February in Crystal Lake, the average temperature is 20°C (68°F), with maximums reaching 31°C (88°F) and minimums dropping as low as 2°C (36°F). Be prepared for a diverse range of temperatures, making it essential to pack accordingly for your trip.

February Weather in Crystal Lake: Daily Temperature Highs, Lows, and Averages

The chart illustrates February temperature patterns in Crystal Lake, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Crystal Lake, February typically has an average temperature of 20°C (68°F), with highs reaching up to 31°C (88°F) and lows dropping to around 2°C (36°F).

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

February Precipitation in Crystal Lake

In Crystal Lake in February, the precipitation amount is 59 mm (2.3 in) over a span of 7 days.

February Precipitation Trends in Crystal Lake

The chart displays monthly precipitation patterns in Crystal Lake, 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 Crystal Lake, February typically receives around 59 mm (2.3 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 Crystal Lake

In Crystal Lake in February, humidity is 80%. With an average temperature of 20°C (68°F), this humidity feels like traveling through a warm, dense blanket that clings to your skin, making you feel both sticky and lethargic as you explore the sights.

February Average Humidity in Crystal Lake

This chart illustrates the average monthly humidity levels in Crystal Lake, 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 Crystal Lake 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 Crystal Lake

In Crystal Lake in February, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Crystal Lake.

Maximum UV Index Levels in Crystal Lake for February

The chart shows the monthly maximum UV Index (UVI) for Crystal Lake 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 Crystal Lake typically reaches 8, which falls under the very high exposure category.

Data source: Crystal Lake 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 Crystal Lake Compares to Other Months

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

This table compares monthly weather conditions in Crystal Lake, showing how February’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	16°C (62°F)	40 mm (1.6 inches)	83%	high
February Weather	20°C (68°F)	59 mm (2.3 inches)	80%	very high
March Weather	21°C (69°F)	17 mm (0.7 inches)	75%	very high
April Weather	23°C (74°F)	66 mm (2.6 inches)	68%	extreme
May Weather	26°C (79°F)	130 mm (5.1 inches)	65%	extreme
June Weather	27°C (81°F)	222 mm (8.7 inches)	73%	extreme
July Weather	27°C (82°F)	249 mm (9.8 inches)	77%	extreme
August Weather	28°C (82°F)	231 mm (9.1 inches)	80%	extreme
September Weather	27°C (81°F)	186 mm (7.3 inches)	83%	extreme
October Weather	25°C (78°F)	73 mm (2.9 inches)	83%	very high
November Weather	21°C (69°F)	44 mm (1.7 inches)	83%	high
December Weather	18°C (65°F)	58 mm (2.3 inches)	84%	moderate