• Tonight

    Aug 27

    Lo 57°

    Partly cloudy

    Lawn Mowing Weather
    • Hours of Precip
      0
    • Precip
      3%
    • Hi
      RealFeel
      92°
  • Fri

    Aug 28

    86°Lo 63°

    Times of clouds and sun

    Excellent for lawn mowing
    • Hours of Precip
      0
    • Precip
      13%
    • Hi
      RealFeel
      86°
    more
  • Sat

    Aug 29

    79°Lo 53°

    Intervals of clouds and sun

    Excellent for lawn mowing
    • Hours of Precip
      0
    • Precip
      10%
    • Hi
      RealFeel
      78°
    more
  • Sun

    Aug 30

    79°Lo 53°

    Mostly sunny

    Excellent for lawn mowing
    • Hours of Precip
      0
    • Precip
      3%
    • Hi
      RealFeel
      78°
    more
  • Mon

    Aug 31

    79°Lo 53°

    Partly sunny and pleasant

    Very Good for lawn mowing
    • Hours of Precip
      0
    • Precip
      1%
    • Hi
      RealFeel
      79°
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Thu
9am
10am 11am 12pm 1pm 2pm 3pm 4pm
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Forecast
Sunny
Sunny
Sunny
Sunny
Sunny
Sunny
Mostly Sunny
Mostly Sunny
Temp (°F) 68° 72° 76° 79° 82° 86° 88° 93°
RealFeel® 69° 75° 83° 84° 86° 88° 89° 92°
Humidity 56% 47% 45% 40% 35% 31% 33% 28%
   
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Rain
 
0%
 
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0%
 
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0%
Snow
 
0%
 
0%
 
0%
 
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Ice
 
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  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Wind (mph) 7 S 7 SW 5 W 8 SSW 9 S 13 SSW 14 SSW 15 SW
UV Index 2 4 5 6 7 6 5 4
Cloud Cover 0% 0% 0% 0% 0% 0% 25% 25%
Dew Point 52° 51° 53° 53° 52° 52° 56° 56°
Middle Grid line 95 F Middle Grid line 90 F Middle Grid line 85 F Middle Grid line 80 F Middle Grid line 75 F Middle Grid line 70 F Middle Grid line 65 F

Temperature History - Aug 27

more Historical Weather Data >
  Today Normal Record 8/27/2014
High 93° 84° 105° (1944) 90°
Low 57° 55° 42° (1942) 57°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:34 AM with 13:13 of sunlight, then sets at 7:47 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 6:17 PM with 11:00 of moolight, then sets at 5:17 AM

Napa Weather Report

San Francisco: Sunshine, Dry Conditions to Span the Weekend

August 27, 2015; 4:50 PM ET

Dry conditions are expected to continue across the area for the foreseeable future. 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?

Current Drought Status

Current Soil Conditions

Thu. Overnight Freeze

Thu. Degree Days

Thu. Evapotranspiration