• Today

    Sep 17

    80°Lo 50°

    Windy this afternoon

    Beneficial weather for migraines
    • Hi
      RealFeel
      75°
    • UV
      6 - High
    • Cloud
      Cover
      26%
    more
  • Thu

    Sep 18

    71°Lo 45°

    Periods of sun with a shower

    Beneficial weather for migraines
    • Hi
      RealFeel
      74°
    • UV
      4 - Moderate
    • Cloud
      Cover
      67%
    more
  • Fri

    Sep 19

    81°Lo 51°

    Mostly sunny and warmer

    Beneficial weather for migraines
    • Hi
      RealFeel
      86°
    • UV
      6 - High
    • Cloud
      Cover
      11%
    more
  • Sat

    Sep 20

    85°Lo 47°

    Mostly sunny and warm

    Beneficial weather for migraines
    • Hi
      RealFeel
      90°
    • UV
      6 - High
    • Cloud
      Cover
      11%
  • Sun

    Sep 21

    83°Lo 46°

    Warm with plenty of sun

    Beneficial weather for migraines
    • Hi
      RealFeel
      89°
    • UV
      6 - High
    • Cloud
      Cover
      1%
    more
Next Previous
Hi 85° RealFeel® 90° Precipitation 1%

Day

N

E

S

W

  • SSW 2 mph
  • Gusts: 5 mph

Mostly sunny and warm

  • Max UV Index: 6 (High)
  • Thunderstorms: 4%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 47° RealFeel® 48° Precipitation 2%

Night

N

E

S

W

  • N 1 mph
  • Gusts: 2 mph

Clear

  • Max UV Index: N/A
  • Thunderstorms: 4%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs

Temperature History - Sep 20

more Historical Weather Data >
  Today Normal Record 9/20/2013
High 85° 75° 89° (1974) 73°
Low 47° 42° 33° (2004) 49°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:50 AM with 12:16 of sunlight, then sets at 7:06 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 3:35 AM with 13:37 of moolight, then sets at 5:12 PM

Top Story

Chester Weather Report

San Francisco: Sunshine, Seasonable Temperatures to Continue

September 17, 2014; 3:27 PM ET

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

Sat. Migraine Headache

Sat. UV Index