February Weather in Crystal Lake, United States

Last updated: June 24, 2025

In February, the average temperature in Crystal Lake, United States hovers around 0°C (32°F), with potential fluctuations ranging from a brisk -22°C (-7°F) to a mild 22°C (72°F). Expect about 88 mm (3.5 in) of precipitation over 10 days, contributing to a rather high average humidity of 82%. Prepare accordingly for a unique and variable climate!

February Temperature in Crystal Lake

In February in Crystal Lake, the average temperature is 0°C (32°F), with maximums reaching up to 22°C (72°F) and minimums potentially dropping as low as -22°C (-7°F). Be prepared for a mix of weather conditions, making it essential to pack layers for your travels.

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 0°C (32°F), with highs reaching up to 22°C (72°F) and lows dropping to around -22°C (-7°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 88 mm (3.5 in) spread over a duration of 10 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 88 mm (3.5 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 Crystal Lake

In Crystal Lake in February, humidity is 82%. With an average temperature of 0°C (32°F), this humidity feels like an icy breath enveloping you, making each step outdoors a challenge as the cold dampness seeps into your clothes, chilling you to the bone and sapping your energy while traveling.

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 82%, 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 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 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 5, which falls under the moderate 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	-1°C (30°F)	69 mm (2.7 inches)	84%	moderate
February Weather	0°C (32°F)	88 mm (3.5 inches)	82%	moderate
March Weather	3°C (38°F)	85 mm (3.4 inches)	81%	high
April Weather	9°C (49°F)	128 mm (5.0 inches)	78%	very high
May Weather	15°C (59°F)	110 mm (4.3 inches)	69%	very high
June Weather	20°C (69°F)	79 mm (3.1 inches)	69%	very high
July Weather	23°C (74°F)	141 mm (5.6 inches)	62%	very high
August Weather	23°C (73°F)	86 mm (3.4 inches)	65%	very high
September Weather	19°C (66°F)	101 mm (4.0 inches)	68%	very high
October Weather	13°C (56°F)	138 mm (5.4 inches)	74%	high
November Weather	5°C (42°F)	92 mm (3.6 inches)	82%	moderate
December Weather	1°C (34°F)	121 mm (4.8 inches)	80%	low