• Tonight

    Jul 27

    Lo 60°

    Clear

    Home Energy Efficiency Weather
    • Avg
      RealFeel
      76°
    • Hi
      RealFeel
      91°
    • Wind
      Speed
      12 mph
    more
  • Tue

    Jul 28

    96°Lo 62°

    Hot with brilliant sunshine

    Poor for home energy
    • Avg
      RealFeel
      83°
    • Hi
      RealFeel
      102°
    • Wind
      Speed
      5 mph
  • Wed

    Jul 29

    100°Lo 66°

    Hot with scorching sunshine

    Fair for home energy
    • Avg
      RealFeel
      85°
    • Hi
      RealFeel
      105°
    • Wind
      Speed
      5 mph
    more
  • Thu

    Jul 30

    99°Lo 66°

    Hot with blazing sunshine

    Fair for home energy
    • Avg
      RealFeel
      84°
    • Hi
      RealFeel
      103°
    • Wind
      Speed
      6 mph
    more
  • Fri

    Jul 31

    97°Lo 67°

    Partly sunny and very warm

    Fair for home energy
    • Avg
      RealFeel
      85°
    • Hi
      RealFeel
      104°
    • Wind
      Speed
      6 mph
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Tue
7am
8am 9am 10am 11am 12pm 1pm 2pm
  7am 8am 9am 10am 11am 12pm 1pm 2pm
Forecast
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Sunny
Sunny
Sunny
Sunny
Temp (°F) 64° 67° 73° 79° 85° 90° 92° 94°
RealFeel® 65° 68° 77° 85° 92° 98° 100° 102°
Humidity 69% 58% 48% 35% 27% 21% 16% 14%
   
  7am 8am 9am 10am 11am 12pm 1pm 2pm
Rain
 
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0%
 
0%
 
0%
 
0%
 
0%
 
0%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
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Ice
 
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  7am 8am 9am 10am 11am 12pm 1pm 2pm
Wind (mph) 4 NNE 4 NE 4 NE 5 NE 5 NE 5 NE 5 NE 5 ENE
UV Index 0 1 3 5 6 8 8 8
Cloud Cover 21% 27% 21% 10% 0% 0% 0% 0%
Dew Point 54° 52° 53° 49° 47° 46° 40° 37°
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 Middle Grid line 60 F

Temperature History - Jul 28

more Historical Weather Data >
  Today Normal Record 7/28/2014
High 96° 94° N/A 100°
Low 62° 54° N/A 66°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:08 AM with 14:19 of sunlight, then sets at 8:27 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 6:04 PM with 10:18 of moolight, then sets at 4:22 AM

Lucerne Weather Report

San Francisco: Warm, Dry Conditions for Last Week of July

July 28, 2015; 12:18 AM ET

Conditions will be dry and warm for residents living in the San Francisco metropolitan area this week. 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.

Tue. Home Energy Efficiency

Tue. Degree Days

Tue. UV Index