• Tonight

    May 3

    Lo 48°

    Mainly clear

    Home Energy Efficiency Weather
    • Avg
      RealFeel
      62°
    • Hi
      RealFeel
      74°
    • Wind
      Speed
      10 mph
  • Mon

    May 4

    78°Lo 45°

    Mostly sunny

    Poor for home energy
    • Avg
      RealFeel
      65°
    • Hi
      RealFeel
      83°
    • Wind
      Speed
      7 mph
    more
  • Tue

    May 5

    76°Lo 43°

    Delightful with sunshine

    Poor for home energy
    • Avg
      RealFeel
      63°
    • Hi
      RealFeel
      81°
    • Wind
      Speed
      6 mph
    more
  • Wed

    May 6

    73°Lo 43°

    Sunny and pleasant

    Poor for home energy
    • Avg
      RealFeel
      60°
    • Hi
      RealFeel
      78°
    • Wind
      Speed
      8 mph
    more
  • Thu

    May 7

    69°Lo 42°

    Partly sunny

    Poor for home energy
    • Avg
      RealFeel
      61°
    • Hi
      RealFeel
      78°
    • Wind
      Speed
      5 mph
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Sun
12pm
1pm 2pm 3pm 4pm 5pm 6pm 7pm
  12pm 1pm 2pm 3pm 4pm 5pm 6pm 7pm
Forecast
Partly Cloudy
Partly Cloudy
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Temp (°F) 63° 66° 69° 71° 70° 70° 69° 68°
RealFeel® 68° 71° 74° 74° 70° 69° 67° 65°
Humidity 60% 53% 46% 43% 44% 45% 47% 49%
   
  12pm 1pm 2pm 3pm 4pm 5pm 6pm 7pm
Rain
 
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Snow
 
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Ice
 
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  12pm 1pm 2pm 3pm 4pm 5pm 6pm 7pm
Wind (mph) 8 S 9 S 12 S 13 E 15 W 14 W 12 WSW 9 SW
UV Index 5 7 7 6 4 3 1 0
Cloud Cover 73% 57% 20% 20% 20% 17% 13% 13%
Dew Point 49° 48° 48° 48° 47° 48° 48° 48°
Middle Grid line 75 F Middle Grid line 70 F Middle Grid line 65 F Middle Grid line 60 F

Temperature History - May 3

more Historical Weather Data >
  Today Normal Record 5/3/2014
High 71° 73° N/A 69°
Low 48° 42° N/A 52°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:11 AM with 13:55 of sunlight, then sets at 8:06 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 7:54 PM with 10:48 of moolight, then sets at 6:42 AM

Lucerne Weather Report

San Francisco: Seasonable Temperatures to Continue Through Week

May 3, 2015; 7:29 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 >

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.

Sun. Home Energy Efficiency

Sun. Degree Days

Sun. UV Index