• Early AM

    May 25

    Lo 73°

    A shower or thunderstorm

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

    May 25

    85°Lo 73°

    A thunderstorm in spots

    Low ragweed pollen levels
    • Grass
      Pollen
      3 - Moderate
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      3 - Moderate
  • Thu

    May 26

    82°Lo 70°

    A severe afternoon t-storm

    Low ragweed pollen levels
    • Grass
      Pollen
      3 - Moderate
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      3 - Moderate
    more
  • Fri

    May 27

    77°Lo 70°

    Thunderstorms, some severe

    Moderate ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      3 - Moderate
    • Tree
      Pollen
      1 - Low
    more
  • Sat

    May 28

    87°Lo 71°

    Cloudy, humid and warmer

    Low ragweed pollen levels
    • Grass
      Pollen
      3 - Moderate
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      3 - Moderate
    more
Next Previous
Hi 85° RealFeel® 91° Precipitation 40%

Day

N

E

S

W

  • S 15 mph
  • Gusts: 37 mph

Breezy and humid with periods of clouds and sun; a shower or thunderstorm in spots this afternoon

  • Max UV Index: 6 (High)
  • Thunderstorms: 60%
  • 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 73° RealFeel® 72° Precipitation 25%

Night

N

E

S

W

  • S 16 mph
  • Gusts: 37 mph

Cloudy; breezy, warm and humid

  • Max UV Index: N/A
  • Thunderstorms: 24%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs

Sunnyvale Pollen Levels - May 25

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

    Moderate

  • Ragweed Pollen

    Low

  • Mold

    Low

  • Grass Pollen

    Moderate

Temperature History - May 25

more Historical Weather Data >
  Today Normal Record 5/25/2015
High 85° 86° N/A 79°
Low 73° 67° N/A 62°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:21 AM with 14:05 of sunlight, then sets at 8:26 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 11:40 PM with 10:51 of moolight, then sets at 10:31 AM

Sunnyvale Weather Report

Rounds of severe weather to bombard central US this week

May 25, 2016; 2:46 AM ET

Rounds of severe thunderstorms, including the potential for flooding rain and tornadoes, will continue to erupt over the central United States this week. more >

Wed. Pollen

Wed. Dust & Dander

Wed. Wind Maps