• Tonight

    Dec 20

    Lo 17°

    Cloudy with flurries

    Ragweed Pollen Weather
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      0 - Low
    more
  • Sun

    Dec 21

    30°Lo 24°

    Mostly cloudy

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      0 - Low
  • Mon

    Dec 22

    31°Lo 18°

    A little snow at times

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

    Dec 23

    23°Lo 11°

    Cloudy, flurries; colder

    Low ragweed pollen levels
    • Precip
      55%
    • Wind
      Speed
      18 mph
    • Cloud
      Cover
      96%
    more
  • Wed

    Dec 24

    19°Lo 12°

    Mostly cloudy

    Ragweed Pollen Weather
    • Precip
      5%
    • Wind
      Speed
      12 mph
    • Cloud
      Cover
      94%
    more
Next Previous
Hi 30° RealFeel® 23° Precipitation 6%

Day

N

E

S

W

  • SSE 9 mph
  • Gusts: 15 mph

Mostly cloudy

  • Max UV Index: 1 (Low)
  • Thunderstorms: 0%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 24° RealFeel® 14° Precipitation 60%

Night

N

E

S

W

  • ESE 10 mph
  • Gusts: 16 mph

Mostly cloudy with snow flurries late

  • Max UV Index: N/A
  • Thunderstorms: 0%
  • Precipitation: 0.01 in
  • Rain: 0 in
  • Snow: 0.2 in
  • Ice: 0 in
  • Hours of Precipitation: 2 hrs
  • Hours of Rain: 0 hrs

McHenry Pollen Levels - December 21

  • Extreme
  • Very High
  • High
  • Moderate
  • Low
  • Grass

    Pollen

    Low

  • Weed

    Pollen

    Low

  • Tree

    Pollen

    Low

  • Mold

    Pollen

    Low

Temperature History - Dec 21

more Historical Weather Data >
  Today Normal Record 12/21/2013
High 30° 18° 41° (1854) -6°
Low 24° -32° (1989) -11°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 8:20 AM with 8:25 of sunlight, then sets at 4:45 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 7:32 AM with 9:27 of moolight, then sets at 4:59 PM

Sun. Pollen

Sun. Dust & Dander

Sun. Wind Maps