• Early AM

    Sep 4

    Lo 66°

    Partly to mostly cloudy

    Beach & Pool Weather
    • UV
      4 - Moderate
    • Cloud
      Cover
      73%
    • Precip
      24%
    more
  • Today

    Sep 4

    85°Lo 67°

    Clouds and sun with a t-storm

    Very Good at the beach or pool
    • UV
      4 - Moderate
    • Cloud
      Cover
      26%
    • Precip
      40%
    more
  • Sat

    Sep 5

    89°Lo 70°

    Partly sunny, warm and humid

    Excellent at the beach or pool
    • UV
      4 - Moderate
    • Cloud
      Cover
      32%
    • Precip
      8%
  • Sun

    Sep 6

    90°Lo 72°

    Partly sunny, hot and humid

    Very Good at the beach or pool
    • UV
      5 - High
    • Cloud
      Cover
      83%
    • Precip
      55%
    more
  • Mon

    Sep 7

    82°Lo 66°

    Mostly cloudy with a t-storm

    Good at the beach or pool
    • UV
      4 - Moderate
    • Cloud
      Cover
      95%
    • Precip
      25%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Sat
9am
10am 11am 12pm 1pm 2pm 3pm 4pm
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Forecast
Mostly Sunny
Mostly Sunny
Mostly Sunny
Partly Sunny
Partly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Temp (°F) 75° 79° 83° 85° 87° 88° 89° 88°
RealFeel® 81° 90° 96° 96° 97° 97° 99° 95°
Humidity 79% 75% 70% 61% 55% 53% 54% 55%
   
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Rain
 
20%
 
20%
 
20%
 
20%
 
13%
 
0%
 
0%
 
0%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Wind (mph) 4 SSW 4 SSW 5 SW 5 SW 6 SW 6 SW 6 SW 6 SW
UV Index 2 3 4 5 5 5 4 3
Cloud Cover 26% 26% 26% 45% 45% 26% 26% 26%
Dew Point 68° 71° 72° 70° 69° 68° 70° 70°
Middle Grid line 90 F Middle Grid line 85 F Middle Grid line 80 F Middle Grid line 75 F Middle Grid line 70 F

Temperature History - Sep 5

more Historical Weather Data >
  Today Normal Record 9/5/2014
High 89° 77° N/A 79°
Low 70° 54° N/A 58°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:22 AM with 12:59 of sunlight, then sets at 7:21 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 9:29 AM with 4:40 of moolight, then sets at 2:10 PM

Crystal Lake Weather Report

Chicago: Sun, Humidity to Grip Region Before Stormy Labor Day

September 4, 2015; 12:54 AM ET

As the Labor Day weekend shapes up, Chicago residents will see mostly sunny and humid conditions until the holiday itself on Monday. more >

What's that Warning? Warnings at the Beach

Jul 25, 2012; 5:00 AM ET If you're headed to the beach, keep an eye out for any of these watches and warnings issued by the NWS.

Sat. Beach & Pool

Sat. UV Index

Sat. Wind Maps