• Today

    May 4

    55°Lo 49°

    Low clouds may break; cool

    Poor for home energy
    • Avg
      RealFeel
      49°
    • Hi
      RealFeel
      55°
    • Wind
      Speed
      9 mph
  • Tue

    May 5

    57°Lo 48°

    Low clouds break for some sun

    Poor for home energy
    • Avg
      RealFeel
      49°
    • Hi
      RealFeel
      57°
    • Wind
      Speed
      14 mph
    more
  • Wed

    May 6

    58°Lo 48°

    Sunny to partly cloudy

    Poor for home energy
    • Avg
      RealFeel
      49°
    • Hi
      RealFeel
      58°
    • Wind
      Speed
      17 mph
    more
  • Thu

    May 7

    59°Lo 48°

    Times of clouds and sun

    Poor for home energy
    • Avg
      RealFeel
      52°
    • Hi
      RealFeel
      60°
    • Wind
      Speed
      17 mph
    more
  • Fri

    May 8

    58°Lo 48°

    Times of clouds and sun

    Poor for home energy
    • Avg
      RealFeel
      52°
    • Hi
      RealFeel
      60°
    • Wind
      Speed
      12 mph
    more
Next Previous
Hi 55° RealFeel® 55° Precipitation 2%

Day

N

E

S

W

  • W 9 mph
  • Gusts: 17 mph

Low clouds, then perhaps some sun and cool

  • Max UV Index: 6 (High)
  • Thunderstorms: 0%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 49° RealFeel® 42° Precipitation 3%

Night

N

E

S

W

  • SW 9 mph
  • Gusts: 15 mph

Mostly clear

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

Temperature History - May 4

more Historical Weather Data >
  Today Normal Record 5/4/2014
High 55° 61° N/A 61°
Low 49° 45° N/A 54°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:11 AM with 13:51 of sunlight, then sets at 8:02 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 8:47 PM with 10:39 of moolight, then sets at 7:26 AM

Half Moon Bay Weather Report

San Francisco: Seasonable Temperatures to Continue Through Week

May 4, 2015; 1:42 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.

Mon. Home Energy Efficiency

Mon. Degree Days

Mon. UV Index