• Early AM

    May 20

    Lo 65°

    Periods of rain and a thunderstorm

    Dust & Dander Weather
    • Grass
      Pollen
      2 - Low
    • Ragweed
      Pollen
      5 - Low
    • Tree
      Pollen
      350 - High
    more

  • Today

    May 20

    85°Lo 65°

    A strong afternoon t-storm

    Extreme indoor dust & dander levels
    • Grass
      Pollen
      2 - Low
    • Ragweed
      Pollen
      5 - Low
    • Tree
      Pollen
      350 - High

  • Tue

    May 21

    80°Lo 60°

    Mostly cloudy with a t-storm

    Extreme indoor dust & dander levels
    • Grass
      Pollen
      2 - Low
    • Ragweed
      Pollen
      5 - Low
    • Tree
      Pollen
      350 - High
    more

  • Wed

    May 22

    74°Lo 49°

    Mostly cloudy with a t-storm

    Extreme indoor dust & dander levels
    • Precip
      65%
    • Wind
      Speed
      7 mph
    • Cloud
      Cover
      90%
    more

  • Thu

    May 23

    65°Lo 40°

    Clouds breaking for some sun

    Extreme indoor dust & dander levels
    • Precip
      25%
    • Wind
      Speed
      12 mph
    • Cloud
      Cover
      63%
    more
Next Previous
Hi 85° RealFeel® 85° Precipitation 55%

Day

N

E

S

W

  • SSW 13 mph
  • Gusts: 21 mph

Warm; a thunderstorm in spots this morning followed by a strong thunderstorm this afternoon

  • Max UV Index: 7 (High)
  • Thunderstorms: 95%
  • Precipitation: 0.19 in
  • Rain: 0.19 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 1.5 hrs
  • Hours of Rain: 1.5 hrs
Lo 65° RealFeel® 60° Precipitation 62%

Night

N

E

S

W

  • S 7 mph
  • Gusts: 14 mph

Mainly cloudy; warm and humid with a couple of showers and a thunderstorm

  • Max UV Index: N/A
  • Thunderstorms: 60%
  • Precipitation: 0.3 in
  • Rain: 0.3 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 3 hrs
  • Hours of Rain: 3 hrs

Janesville Pollen Levels - May 20

  • Extreme
  • Very High
  • High
  • Moderate
  • Low

  • Grass

    Pollen

    Low

  • Weed

    Pollen

    Low

  • Tree

    Pollen

    High

  • Mold

    Pollen

    Low

Temperature History - May 20

more Historical Weather Data >
  Today Normal Record 5/20/2012
High 85° 71° N/A 91°
Low 65° 49° N/A 59°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:29 AM with 14:47 of sunlight, then sets at 8:16 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 3:18 PM with 11:43 of moolight, then sets at 3:01 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