• Early AM

    Aug 20

    Lo 64°

    Partly to mostly cloudy

    Ragweed Pollen Weather
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      5 - Low
    • Tree
      Pollen
      0 - Low
    more
  • Today

    Aug 20

    84°Lo 64°

    Humid with clouds and sun

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

    Aug 21

    82°Lo 65°

    A couple of thunderstorms

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      5 - Low
    • Tree
      Pollen
      0 - Low
  • Fri

    Aug 22

    79°Lo 64°

    A brief shower or two

    Low ragweed pollen levels
    • Precip
      60%
    • Wind
      Speed
      4 mph
    • Cloud
      Cover
      69%
    more
  • Sat

    Aug 23

    76°Lo 61°

    Times of clouds and sun

    Low ragweed pollen levels
    • Precip
      25%
    • Wind
      Speed
      5 mph
    • Cloud
      Cover
      46%
    more
Next Previous
Hi 82° RealFeel® 89° Precipitation 65%

Day

N

E

S

W

  • S 3 mph
  • Gusts: 5 mph

More clouds than sun; humid with a couple of showers and a thunderstorm

  • Max UV Index: 5 (Moderate)
  • Thunderstorms: 60%
  • Precipitation: 0.55 in
  • Rain: 0.55 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 4 hrs
  • Hours of Rain: 4 hrs
Lo 65° RealFeel® 63° Precipitation 65%

Night

N

E

S

W

  • N 2 mph
  • Gusts: 4 mph

Partly cloudy with a passing shower or two

  • Max UV Index: N/A
  • Thunderstorms: 29%
  • Precipitation: 0.22 in
  • Rain: 0.22 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 3 hrs
  • Hours of Rain: 3 hrs

Norristown Pollen Levels - August 21

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

    Pollen

    Low

  • Weed

    Pollen

    Low

  • Tree

    Pollen

    Low

  • Mold

    Pollen

    Low

Temperature History - Aug 21

more Historical Weather Data >
  Today Normal Record 8/21/2013
High 82° 82° N/A 87°
Low 65° 62° N/A 59°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:18 AM with 13:32 of sunlight, then sets at 7:50 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 2:47 AM with 14:30 of moolight, then sets at 5:17 PM

Top Story

Norristown Weather Report

Philly: Downpour, Flooding Risk to Increase Thursday

August 19, 2014; 11:13 AM ET

A wedge of dry air will slowly erode at midweek and will allow showers and thunderstorms to survive the trip into Philadelphia from the Midwest. more >

Thu. Pollen

Thu. Dust & Dander

Thu. Wind Maps