Weather Report
Portola Valley, California
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Current Conditions -  °F | °C
As of 4:47 PM on Saturday 18 May 2013 (Local Time) from KPAO Reporting Station
Clear Clear   Feels Like: 23°
Wind Chill: 23°   Ceiling: Unl
Heat Index: NA   Visibility: 30mi
Dew Point: NA   Wind: 15mph
Humidity: NA   Direction: 320° (NW)
Pressure: 30.11"   Gusts: NA
Report Text: KPAO 182347Z 32013KT 30SM SKC 24/ A3011
6 PM
Sunny
Sunny 20°
7 PM
Sunny
Sunny 18°
8 PM
Sunny
Sunny 17°
Alerts
Interactive Weather Map
10 Day Forecast -  °F | °C
sat sun mon tue wed thu fri sat sun mon
may
18
M Clear
M Clear
23°
10°
may
19
Sunny
Sunny
27°
12°
may
20
Sunny
Sunny
28°
12°
may
21
P Cloudy
P Cloudy
23°
may
22
P Cloudy
P Cloudy
22°
may
23
P Cloudy
P Cloudy
22°
may
24
P Cloudy
P Cloudy
22°
11°
may
25
Sunny
Sunny
22°
11°
may
26
Sunny
Sunny
23°
12°
may
27
AM Clouds
AM Clouds
24°
12°
Details for Saturday, May 18 (Evening)
Evening: Clear to partly cloudy. Low near 50F. Winds NW at 10 to 20 mph.
UV Index: 9 (Very High)
Ultraviolet Radiation Index
Relative Humidity: 75%
Relative Humidity
Precipitation: 0%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 27%
Cloud Coverage
Sunrise: 5:57 AM
Sunset: 8:14 PM
 
Moonrise: 1:31 PM
Moonset: 1:44 AM
Moon Phase:  Waxing Gibbous
Moonphase:
Waxing Gibbous
Wind Direction:  NW
Direction: NW (306°)
Speed: 13Mph(20Km, 11Kts)
Details for Sunday, May 19
Sunny skies. High 81F. Winds NW at 10 to 20 mph.
Evening: Clear skies. Low 54F. Winds NW at 5 to 10 mph.
UV Index: 9 (Very High)
Ultraviolet Radiation Index
Relative Humidity: 42%
Relative Humidity
Precipitation: 0%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 2%
Cloud Coverage
Sunrise: 5:56 AM
Sunset: 8:15 PM
 
Moonrise: 2:31 PM
Moonset: 2:15 AM
Moon Phase:  Waxing Gibbous
Moonphase:
Waxing Gibbous
Wind Direction:  NW
Direction: NW (321°)
Speed: 14Mph(23Km, 12Kts)
Details for Monday, May 20
Sunshine. Highs in the low 80s and lows in the low 50s.
UV Index: 9 (Very High)
Ultraviolet Radiation Index
Relative Humidity: 34%
Relative Humidity
Precipitation: 0%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 1%
Cloud Coverage
Sunrise: 5:56 AM
Sunset: 8:16 PM
 
Moonrise: 3:34 PM
Moonset: 2:47 AM
Moon Phase:  Waxing Gibbous
Moonphase:
Waxing Gibbous
Wind Direction:  NNW
Direction: NNW (342°)
Speed: 12Mph(20Km, 10Kts)
Details for Tuesday, May 21
Times of sun and clouds. Highs in the low 70s and lows in the upper 40s.
UV Index: 9 (Very High)
Ultraviolet Radiation Index
Relative Humidity: 54%
Relative Humidity
Precipitation: 0%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 16%
Cloud Coverage
Sunrise: 5:55 AM
Sunset: 8:16 PM
 
Moonrise: 4:40 PM
Moonset: 3:21 AM
Moon Phase:  Waxing Gibbous
Moonphase:
Waxing Gibbous
Wind Direction:  WNW
Direction: WNW (290°)
Speed: 18Mph(29Km, 16Kts)
Details for Wednesday, May 22
Times of sun and clouds. Highs in the low 70s and lows in the upper 40s.
UV Index: 9 (Very High)
Ultraviolet Radiation Index
Relative Humidity: 46%
Relative Humidity
Precipitation: 0%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 16%
Cloud Coverage
Sunrise: 5:54 AM
Sunset: 8:17 PM
 
Moonrise: 5:48 PM
Moonset: 3:58 AM
Moon Phase:  Waxing Gibbous
Moonphase:
Waxing Gibbous
Wind Direction:  NW
Direction: NW (317°)
Speed: 19Mph(31Km, 16Kts)
Details for Thursday, May 23
Mix of sun and clouds. Highs in the low 70s and lows in the upper 40s.
UV Index: 9 (Very High)
Ultraviolet Radiation Index
Relative Humidity: 52%
Relative Humidity
Precipitation: 10%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 33%
Cloud Coverage
Sunrise: 5:54 AM
Sunset: 8:18 PM
 
Moonrise: 6:58 PM
Moonset: 4:40 AM
Moon Phase:  Waxing Gibbous
Moonphase:
Waxing Gibbous
Wind Direction:  NW
Direction: NW (315°)
Speed: 18Mph(29Km, 16Kts)
Details for Friday, May 24
Partly cloudy. Highs in the low 70s and lows in the low 50s.
UV Index: 9 (Very High)
Ultraviolet Radiation Index
Relative Humidity: 57%
Relative Humidity
Precipitation: 10%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 34%
Cloud Coverage
Sunrise: 5:53 AM
Sunset: 8:19 PM
 
Moonrise: 8:07 PM
Moonset: 5:29 AM
Moon Phase:  Full
Moonphase:
Full
Wind Direction:  WNW
Direction: WNW (298°)
Speed: 17Mph(28Km, 15Kts)
Details for Saturday, May 25
Mainly sunny. Highs in the low 70s and lows in the low 50s.
UV Index: 9 (Very High)
Ultraviolet Radiation Index
Relative Humidity: 61%
Relative Humidity
Precipitation: 0%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 2%
Cloud Coverage
Sunrise: 5:53 AM
Sunset: 8:20 PM
 
Moonrise: 9:13 PM
Moonset: 6:24 AM
Moon Phase:  Waning Gibbous
Moonphase:
Waning Gibbous
Wind Direction:  WNW
Direction: WNW (294°)
Speed: 16Mph(26Km, 14Kts)
Details for Sunday, May 26
Mainly sunny. Highs in the mid 70s and lows in the low 50s.
UV Index: 9 (Very High)
Ultraviolet Radiation Index
Relative Humidity: 59%
Relative Humidity
Precipitation: 10%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 5%
Cloud Coverage
Sunrise: 5:52 AM
Sunset: 8:20 PM
 
Moonrise: 10:13 PM
Moonset: 7:27 AM
Moon Phase:  Waning Gibbous
Moonphase:
Waning Gibbous
Wind Direction:  WNW
Direction: WNW (300°)
Speed: 17Mph(28Km, 15Kts)
Details for Monday, May 27
Morning clouds followed by afternoon sun. Highs in the mid 70s and lows in the mid 50s.
UV Index: 9 (Very High)
Ultraviolet Radiation Index
Relative Humidity: 58%
Relative Humidity
Precipitation: 10%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 30%
Cloud Coverage
Sunrise: 5:52 AM
Sunset: 8:21 PM
 
Moonrise: 11:06 PM
Moonset: 8:34 AM
Moon Phase:  Waning Gibbous
Moonphase:
Waning Gibbous
Wind Direction:  WNW
Direction: WNW (302°)
Speed: 17Mph(28Km, 15Kts)
Chart.
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