• Early AM

    Jul 31

    Lo 66°

    Mainly clear

    Ragweed Pollen Weather
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
  • Today

    Jul 31

    94°Lo 65°

    Partly sunny and very warm

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
  • Sat

    Aug 1

    90°Lo 63°

    Partly sunny and very warm

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
  • Sun

    Aug 2

    89°Lo 59°

    Warm with sun, some clouds

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
  • Mon

    Aug 3

    87°Lo 59°

    A t-storm around in the p.m.

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
Next Previous
Next 8 hours >
  Fri
12am
1am 2am 3am 4am 5am 6am 7am
  12am 1am 2am 3am 4am 5am 6am 7am
Forecast
Mostly Clear
Mostly Clear
Mostly Clear
Mostly Clear
Mostly Clear
Mostly Clear
Mostly Clear
Mostly Sunny
Temp (°F) 74° 72° 70° 69° 68° 68° 66° 68°
RealFeel® 71° 69° 68° 67° 66° 66° 65° 68°
Humidity 55% 62% 64% 63% 65% 68% 70% 73%
   
  12am 1am 2am 3am 4am 5am 6am 7am
Rain
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  12am 1am 2am 3am 4am 5am 6am 7am
Wind (mph) 8 NNE 7 N 6 NNW 5 NNW 4 NNW 2 NNW 2 NNW 2 N
UV Index 0 0 0 0 0 0 0 0
Cloud Cover 22% 10% 10% 10% 10% 10% 10% 10%
Dew Point 57° 58° 58° 56° 56° 57° 56° 59°
Middle Grid line 75 F Middle Grid line 70 F Middle Grid line 65 F

Temperature History - Jul 31

more Historical Weather Data >
  Today Normal Record 7/31/2014
High 94° 93° N/A 103°
Low 65° 54° N/A 66°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:10 AM with 14:15 of sunlight, then sets at 8:25 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 7:47 PM with 10:45 of moolight, then sets at 6:32 AM

Lucerne Weather Report

San Francisco: Comfortable Conditions to End July

July 30, 2015; 1:31 PM ET

A pattern of cooler and seasonable weather will enter the city of San Francisco through the end of July and into the early part of August. more >

Fri. Pollen

Fri. Dust & Dander

Fri. Wind Maps