• Today

    Sep 18

    73°Lo 44°

    Clouds and sun with a shower

    Excellent for stargazing
    • Cloud
      Cover
      11%
    • Precip
      7%
    • Hours of Precip
      1
    more
  • Fri

    Sep 19

    80°Lo 45°

    Mostly sunny and warm

    Excellent for stargazing
    • Cloud
      Cover
      2%
    • Precip
      1%
    • Hours of Precip
      0
    more
  • Sat

    Sep 20

    83°Lo 54°

    A t-storm around in the p.m.

    Excellent for stargazing
    • Cloud
      Cover
      11%
    • Precip
      1%
    • Hours of Precip
      0.5
  • Sun

    Sep 21

    78°Lo 53°

    Sun mixing with clouds; warm

    Excellent for stargazing
    • Cloud
      Cover
      4%
    • Precip
      0%
    • Hours of Precip
      0
    more
  • Mon

    Sep 22

    77°Lo 51°

    Plenty of sun

    Excellent for stargazing
    • Cloud
      Cover
      6%
    • Precip
      1%
    • Hours of Precip
      0
    more
Next Previous
A thunderstorm in spots 83° Lo 75° RealFeel® 87° / 71°

N

E

S

W

  • Precipitation: 40%
  • Rain: 0.04 in
  • Snow: 0 in
  • Humidity: 27%
  • Cloud Cover: 46%
  • Dew Point: 44° F
  • Visibility: 9 mi
3 mph

Temperature History - Sep 20

more Historical Weather Data >
  Today Normal Record 9/20/2013
High 83° 75° 89° (1974) 73°
Low 54° 42° 33° (2004) 49°

Solunar Information for Portola, CA

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:47 AM with 12:15 of sunlight, then sets at 7:02 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 3:32 AM with 13:36 of moolight, then sets at 5:08 PM

Wed, Sep 24
New
Wed, Oct 1
First
Wed, Oct 8
Full
Wed, Oct 15
Last
Top Story

Portola Weather Report

San Francisco: Sunshine, Seasonable Temperatures to Continue

September 18, 2014; 6:37 AM ET

The Bay Area will continue to feature sunshine and seasonable temperatures as the summer season comes to a close. more >

Lunar Reconnaissance Orbiter Studies Moon

Sep 14, 2014; 5:00 AM ET We now know the topographical structure of the moon better than our own planet thanks to LRO.

Sat. Stargazing