• Tonight

    Apr 27

    Lo 49°

    Clear

    Home Energy Efficiency Weather
    • Avg
      RealFeel
      67°
    • Hi
      RealFeel
      83°
    • Wind
      Speed
      9 mph
  • Tue

    Apr 28

    79°Lo 46°

    Mostly sunny and beautiful

    Poor for home energy
    • Avg
      RealFeel
      66°
    • Hi
      RealFeel
      84°
    • Wind
      Speed
      7 mph
    more
  • Wed

    Apr 29

    78°Lo 48°

    Partly sunny

    Poor for home energy
    • Avg
      RealFeel
      65°
    • Hi
      RealFeel
      83°
    • Wind
      Speed
      6 mph
    more
  • Thu

    Apr 30

    85°Lo 51°

    Nice with plenty of sunshine

    Poor for home energy
    • Avg
      RealFeel
      69°
    • Hi
      RealFeel
      87°
    • Wind
      Speed
      8 mph
    more
  • Fri

    May 1

    86°Lo 49°

    Sunny and very warm

    Poor for home energy
    • Avg
      RealFeel
      73°
    • Hi
      RealFeel
      93°
    • Wind
      Speed
      5 mph
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Mon
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Forecast
Partly Sunny
Partly Sunny
Mostly Sunny
Mostly Sunny
Partly Sunny
Partly Sunny
Partly Cloudy
Partly Cloudy
Temp (°F) 80° 81° 80° 78° 73° 68° 65° 63°
RealFeel® 83° 82° 80° 76° 69° 65° 62° 61°
Humidity 31% 30% 32% 35% 44% 50% 53% 59%
   
  3pm 4pm 5pm 6pm 7pm 8pm 9pm 10pm
Rain
 
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Snow
 
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  3pm 4pm 5pm 6pm 7pm 8pm 9pm 10pm
Wind (mph) 12 NE 12 NNE 10 NNE 9 NNE 13 N 10 N 9 N 7 N
UV Index 6 4 3 1 0 0 0 0
Cloud Cover 30% 31% 27% 17% 48% 44% 36% 30%
Dew Point 47° 47° 48° 49° 50° 49° 48° 49°
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 Middle Grid line 60 F

Temperature History - Apr 27

more Historical Weather Data >
  Today Normal Record 4/27/2014
High 81° 71° N/A 63°
Low 49° 41° N/A 42°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:18 AM with 13:42 of sunlight, then sets at 8:00 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 2:17 PM with 13:14 of moolight, then sets at 3:31 AM

Lucerne Weather Report

San Francisco: Dry, Tranquil Weather to Hold for Rest of the Week

April 27, 2015; 8:52 PM ET

Following a warmer start to the week, an onshore flow will bring noticeable cooler conditions and patchy areas of low clouds through midweek. more >

Energy Efficient Lightbulbs and S.A.D

Sep 8, 2012; 5:00 AM ET With shorter days and colder nights in the fall and winter, some people develop seasonal affective disorder. When shopping for lightbulbs to treat the 'winter blues,'consider energy-efficient bulbs.

Mon. Home Energy Efficiency

Mon. Degree Days

Mon. UV Index