• Early AM

    May 1

    Lo 42°

    Drizzle

    Ragweed Pollen Weather
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
  • Today

    May 1

    53°Lo 40°

    Spotty showers this afternoon

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
  • Mon

    May 2

    59°Lo 36°

    Warmer with variable clouds

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
  • Tue

    May 3

    70°Lo 46°

    Partly sunny; breezy, warmer

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
  • Wed

    May 4

    54°Lo 37°

    Cooler with a shower in spots

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
Next Previous
< Previous 8 hours Next 8 hours >
  Wed
9am
10am 11am 12pm 1pm 2pm 3pm 4pm
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Forecast
Showers
Showers
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Partly Cloudy
Partly Cloudy
Showers
Temp (°F) 48° 49° 50° 51° 52° 52° 53° 52°
RealFeel® 38° 38° 43° 47° 49° 48° 48° 44°
Humidity 88% 85% 77% 69% 61% 56% 54% 57%
   
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Rain
 
51%
 
51%
 
38%
 
32%
 
36%
 
43%
 
47%
 
51%
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) 15 NNW 18 NNW 17 NNW 16 NNW 15 NNW 18 N 17 N 16 NNE
UV Index 1 2 3 4 5 5 4 3
Cloud Cover 98% 95% 89% 82% 75% 71% 69% 70%
Dew Point 45° 45° 43° 41° 39° 37° 36° 38°
Middle Grid line 55 F Middle Grid line 50 F Middle Grid line 45 F

Temperature History - May 4

more Historical Weather Data >
  Today Normal Record 5/4/2015
High 54° 64° N/A 71°
Low 37° 41° N/A 49°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:44 AM with 14:13 of sunlight, then sets at 7:57 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 4:34 AM with 12:55 of moolight, then sets at 5:29 PM

Crystal Lake Weather Report

Chicago: Warmup to follow cool, damp weekend

May 1, 2016; 4:29 AM ET

Following a cool and rainy weekend, warmer conditions will arrive in the Chicago area early next week. more >

Wed. Dust & Dander

Wed. Wind Maps