Weather forecast in Crystal Lake (IL)

This data display current weather and forecast for the coming days in Crystal Lake. In addition to temperature, wind, humidity and pressure, we include data on the probability of precipitation so you can have all the information about your destination before your trip.

Crystal Lake current temperature and weather

December 17, 2025

Night
33.3°F Feels like: 25.3°F	Clear
	Wind: 13.4 mph (21.6 Km/h) W Pressure: 29.84 inHg (1010 hPa) Humidity: 85%	Precip. prob.: 0% Visibility: 6 mi (10 km) UV index: 0
Morning
30.2°F Feels like: 23.9°F	Freezing fog
	Wind: 6.7 mph (10.8 Km/h) NW Pressure: 30 inHg (1016 hPa) Humidity: 98%	Precip. prob.: 0% Visibility: 6 mi (10 km) UV index: 0.5
Day
30.9°F Feels like: 25.5°F	Mist
	Wind: 4 mph (6.5 Km/h) S Pressure: 29.98 inHg (1015 hPa) Humidity: 97%	Precip. prob.: 0% Visibility: 6 mi (10 km) UV index: 0.4
Evening
27.9°F Feels like: 17.8°F	Overcast
	Wind: 12.8 mph (20.5 Km/h) S Pressure: 29.89 inHg (1012 hPa) Humidity: 97%	Precip. prob.: 0% Visibility: 6 mi (10 km) UV index: 0

In order for you to be able to estimate what the weather is like in Crystal Lake throughout the year, we provide monthly data for the last few years. Select the month you are interested in.

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Our report for Crystal Lake is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.