• Tonight

    May 18

    Lo 55°

    Mostly cloudy with a shower

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

  • Sun

    May 19

    71°Lo 57°

    Mostly cloudy with a shower

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

  • Mon

    May 20

    77°Lo 65°

    A thunderstorm in the area

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

  • Tue

    May 21

    87°Lo 62°

    A p.m. t-storm possible

    Extreme indoor dust & dander levels
    • Precip
      30%
    • Wind
      Speed
      5 mph
    • Cloud
      Cover
      86%
    more

  • Wed

    May 22

    84°Lo 62°

    A t-storm; colder in the p.m.

    Extreme indoor dust & dander levels
    • Precip
      63%
    • Wind
      Speed
      6 mph
    • Cloud
      Cover
      69%
    more
Next Previous
Hi 68° RealFeel® 67° Precipitation 60%

Day

N

E

S

W

  • ESE 5 mph
  • Gusts: 10 mph

Cloudy; a shower in spots late this morning followed by a passing sprinkle this afternoon

  • Max UV Index: 4 (Moderate)
  • Thunderstorms: 13%
  • Precipitation: 0.05 in
  • Rain: 0.05 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 1.5 hrs
  • Hours of Rain: 1.5 hrs
Lo 55° RealFeel® 53° Precipitation 40%

Night

N

E

S

W

  • E 5 mph
  • Gusts: 10 mph

Mostly cloudy with a shower in places

  • Max UV Index: N/A
  • Thunderstorms: 20%
  • Precipitation: 0.02 in
  • Rain: 0.02 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 1 hrs
  • Hours of Rain: 1 hrs

Williamsport Pollen Levels - May 18

  • Extreme
  • Very High
  • High
  • Moderate
  • Low

  • Grass

    Pollen

    Low

  • Weed

    Pollen

    Low

  • Tree

    Pollen

    High

  • Mold

    Pollen

    Low

Temperature History - May 18

more Historical Weather Data >
  Today Normal Record 5/18/2012
High 68° 72° 95° (1962) 77°
Low 55° 48° 31° (1983) 42°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:47 AM with 14:36 of sunlight, then sets at 8:23 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 1:21 PM with 12:51 of moolight, then sets at 2:12 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.

Sat. Pollen

Sat. Dust & Dander

Sat. Wind Maps