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

September 26, 2025

Night
56.7°F Feels like: 55.8°F	Clear
	Wind: 6.3 mph (10.1 Km/h) W Pressure: 29.03 inHg (983 hPa) Humidity: 85%	Precip. prob.: 0% Visibility: 6 mi (10 km) UV index: 0
Morning
67.3°F Feels like: 67.1°F	Sunny
	Wind: 8.1 mph (13 Km/h) W Pressure: 29.05 inHg (984 hPa) Humidity: 56%	Precip. prob.: 0% Visibility: 6 mi (10 km) UV index: 1.1
Day
80.1°F Feels like: 81.5°F	Cloudy
	Wind: 5.6 mph (9 Km/h) W Pressure: 29.13 inHg (987 hPa) Humidity: 54%	Precip. prob.: 0% Visibility: 6 mi (10 km) UV index: 3.5
Evening
64.8°F Feels like: 64.8°F	Overcast
	Wind: 6 mph (9.7 Km/h) NE Pressure: 29.49 inHg (999 hPa) Humidity: 96%	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.