• Early AM

    May 1

    Lo 33°

    Mostly cloudy

    Ragweed Pollen Weather
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
  • Today

    May 1

    44°Lo 25°

    A bit of snow and rain

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
  • Mon

    May 2

    55°Lo 31°

    A thunderstorm in spots

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
  • Tue

    May 3

    63°Lo 35°

    Partly sunny with a shower

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
  • Wed

    May 4

    70°Lo 38°

    Mostly sunny

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
Next Previous
Hi 55° RealFeel® 69° Precipitation 40%

Day

N

E

S

W

  • ENE 4 mph
  • Gusts: 6 mph

Warmer with times of clouds and sun; a shower or thunderstorm in spots in the afternoon

  • Max UV Index: 8 (Very High)
  • Thunderstorms: 40%
  • Precipitation: 0.04 in
  • Rain: 0.04 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0.5 hrs
  • Hours of Rain: 0.5 hrs
Lo 31° RealFeel® 31° Precipitation 3%

Night

N

E

S

W

  • W 4 mph
  • Gusts: 6 mph

Mainly clear and cold; there will be a freeze

  • Max UV Index: N/A
  • Thunderstorms: 5%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs

Boulder Pollen Levels - May 2

  • Extreme
  • Very High
  • High
  • Moderate
  • Low
  • Tree Pollen

    Low

  • Ragweed Pollen

    Low

  • Mold

    Low

  • Grass Pollen

    Low

Temperature History - May 2

more Historical Weather Data >
  Today Normal Record 5/2/2015
High 55° 68° N/A 73°
Low 31° 40° N/A 46°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:59 AM with 13:59 of sunlight, then sets at 7:58 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 3:30 AM with 11:46 of moolight, then sets at 3:16 PM

Boulder Weather Report

PHOTOS: Late-April snowstorm extends Colorado ski season into early May

May 1, 2016; 2:59 AM ET

A late-April snowstorm dumped over a foot of heavy, wet snow across parts of Colorado on Thursday into Friday, boosting snowpack for an extended ski season at local resorts. more >

Mon. Pollen

Mon. Dust & Dander

Mon. Wind Maps