• Tonight

    May 4

    Lo 50°

    Clear to partly cloudy

    Lawn Mowing Weather
    • Hours of Precip
      0
    • Precip
      2%
    • Hi
      RealFeel
      66°
    more
  • Tue

    May 5

    64°Lo 50°

    Low clouds break for some sun

    Excellent for lawn mowing
    • Hours of Precip
      0
    • Precip
      2%
    • Hi
      RealFeel
      64°
  • Wed

    May 6

    66°Lo 51°

    Sunshine; windy in the p.m.

    Excellent for lawn mowing
    • Hours of Precip
      0
    • Precip
      6%
    • Hi
      RealFeel
      66°
    more
  • Thu

    May 7

    65°Lo 50°

    Periods of sun

    Excellent for lawn mowing
    • Hours of Precip
      0
    • Precip
      5%
    • Hi
      RealFeel
      66°
    more
  • Fri

    May 8

    65°Lo 51°

    Times of clouds and sun

    Excellent for lawn mowing
    • Hours of Precip
      0
    • Precip
      2%
    • Hi
      RealFeel
      67°
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Tue
3am
4am 5am 6am 7am 8am 9am 10am
  3am 4am 5am 6am 7am 8am 9am 10am
Forecast
Mostly Clear
Mostly Clear
Mostly Clear
Mostly Clear
Mostly Sunny
Cloudy
Cloudy
Cloudy
Temp (°F) 51° 50° 51° 51° 51° 53° 55° 57°
RealFeel® 46° 45° 46° 45° 45° 47° 51° 53°
Humidity 83% 84% 83% 83% 83% 79% 73% 69%
   
  3am 4am 5am 6am 7am 8am 9am 10am
Rain
 
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Snow
 
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Ice
 
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  3am 4am 5am 6am 7am 8am 9am 10am
Wind (mph) 9 W 9 W 9 W 9 W 10 W 12 W 13 W 13 W
UV Index 0 0 0 0 0 0 1 2
Cloud Cover 25% 25% 25% 25% 25% 95% 95% 95%
Dew Point 46° 46° 46° 46° 46° 47° 47° 46°
Middle Grid line 60 F Middle Grid line 55 F Middle Grid line 50 F Middle Grid line 45 F

Temperature History - May 5

more Historical Weather Data >
  Today Normal Record 5/5/2014
High 64° 67° 91° (1987) 66°
Low 50° 51° 41° (1965) 55°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:10 AM with 13:53 of sunlight, then sets at 8:03 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 9:45 PM with 10:27 of moolight, then sets at 8:12 AM

San Bruno Weather Report

San Francisco: Seasonable Temperatures to Continue Through Week

May 4, 2015; 1:42 PM ET

A pattern of seasonable temperatures will continue through the first part of the new week, with low clouds in the morning and sunny conditions through the afternoon. more >

Why Do Leaves Change Color?

Sep 20, 2011; 5:00 AM ET Why do leaves change from green to beautiful shades of red, orange and yellow in the fall?

Tue. Overnight Freeze

Tue. Degree Days

Tue. Evapotranspiration