• Tonight

    May 19

    Lo 70°

    A strong evening thunderstorm

    Dust & Dander Weather
    • Grass
      Pollen
      12 - Moderate
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      7 - Low
    more

  • Mon

    May 20

    88°Lo 72°

    A strong afternoon t-storm

    Extreme indoor dust & dander levels
    • Grass
      Pollen
      12 - Moderate
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      7 - Low

  • Tue

    May 21

    85°Lo 66°

    A few t-storms, some severe

    Extreme indoor dust & dander levels
    • Grass
      Pollen
      12 - Moderate
    • Ragweed
      Pollen
      5 - Low
    • Tree
      Pollen
      7 - Low
    more

  • Wed

    May 22

    87°Lo 65°

    Mostly sunny and humid

    Extreme indoor dust & dander levels
    • Precip
      25%
    • Wind
      Speed
      4 mph
    • Cloud
      Cover
      24%
    more

  • Thu

    May 23

    89°Lo 68°

    Partly sunny and humid

    Extreme indoor dust & dander levels
    • Precip
      11%
    • Wind
      Speed
      6 mph
    • Cloud
      Cover
      46%
    more
Next Previous
Hi 88° RealFeel® 90° Precipitation 40%

Day

N

E

S

W

  • SSE 16 mph
  • Gusts: 25 mph

Partly sunny; breezy, warm and humid with a strong thunderstorm in the area in the afternoon

  • Max UV Index: 8 (Very High)
  • Thunderstorms: 91%
  • Precipitation: 0.1 in
  • Rain: 0.1 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 1 hrs
  • Hours of Rain: 1 hrs
Lo 72° RealFeel® 70° Precipitation 40%

Night

N

E

S

W

  • S 13 mph
  • Gusts: 22 mph

Mostly cloudy, breezy and humid with a stray thunderstorm

  • Max UV Index: N/A
  • Thunderstorms: 91%
  • Precipitation: 0.08 in
  • Rain: 0.08 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 1 hrs
  • Hours of Rain: 1 hrs

McKinney Pollen Levels - May 20

  • Extreme
  • Very High
  • High
  • Moderate
  • Low

  • Grass

    Pollen

    Moderate

  • Weed

    Pollen

    Low

  • Tree

    Pollen

    Low

  • Mold

    Pollen

    Low

Temperature History - May 20

more Historical Weather Data >
  Today Normal Record 5/20/2012
High 88° 80° N/A 89°
Low 72° 62° N/A 67°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:24 AM with 13:59 of sunlight, then sets at 8:23 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 3:45 PM with 11:54 of moolight, then sets at 3:39 AM

How Weather Impacts Seasonal Allergy Symptoms

May 18, 2013; 5:00 AM ET If you suffer with seasonal allergies, the weather can relieve or worsen your symptoms. Marja Martinez has the details.

Mon. Pollen

Mon. Dust & Dander

Mon. Wind Maps