Crystal Lake Weather

US Geography / US Weather / Illinois Weather / Crystal Lake

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Avg. High 27 31 44 57 68 78 82 80 74 61 47 32
Avg. Low 8 14 25 36 46 55 61 58 51 40 28 16
Mean 18 24 34 47 58 68 72 70 62 51 38 25
Avg. Precip. 1.5 in 1.3 in 2.5 in 3.5 in 3.5 in 4.1 in 3.9 in 4.1 in 3.8 in 2.4 in 2.8 in 2.1 in

Degrees in Fahrenheit

 

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