• Tonight

    May 1

    Lo 49°

    Increasing cloudiness

    Driving Weather
    • Precip
      6%
    • Hours of Precip
      0
    • Rain
      0 in
  • Mon

    May 2

    77°Lo 48°

    Low clouds, then sun

    Excellent for driving
    • Precip
      8%
    • Hours of Precip
      0
    • Rain
      0 in
    more
  • Tue

    May 3

    74°Lo 51°

    Pleasant with periods of sun

    Excellent for driving
    • Precip
      14%
    • Hours of Precip
      0
    • Rain
      0 in
    more
  • Wed

    May 4

    68°Lo 48°

    Mostly cloudy and cool

    Excellent for driving
    • Precip
      20%
    • Hours of Precip
      0
    • Rain
      0 in
    more
  • Thu

    May 5

    66°Lo 47°

    A stray afternoon shower

    Very Good for driving
    • Precip
      40%
    • Hours of Precip
      0.5
    • Rain
      0.01 in
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Sun
8am
9am 10am 11am 12pm 1pm 2pm
  8am 9am 10am 11am 12pm 1pm 2pm
Forecast
Sunny
Sunny
Sunny
Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Temp (°F) 63° 67° 74° 78° 80° 81° 83°
RealFeel® 66° 70° 79° 83° 86° 88° 89°
Humidity 50% 46% 35% 32% 32% 29% 28%
   
  8am 9am 10am 11am 12pm 1pm 2pm
Rain
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Snow
 
0%
 
0%
 
0%
 
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Ice
 
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  8am 9am 10am 11am 12pm 1pm 2pm
Wind (mph) 4 N 5 N 6 NNE 7 NE 7 ENE 7 SW 6 NE
UV Index 1 3 4 6 7 7 7
Cloud Cover 0% 0% 0% 3% 11% 13% 25%
Dew Point 44° 46° 45° 46° 47° 47° 46°
Middle Grid line 85 F Middle Grid line 80 F Middle Grid line 75 F Middle Grid line 70 F Middle Grid line 65 F Middle Grid line 60 F

Temperature History - May 1

more Historical Weather Data >
  Today Normal Record 5/1/2015
High 84° 74° 93° (1947) 74°
Low 49° 47° 35° (1917) 45°

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 3:00 AM with 11:20 of moolight, then sets at 2:20 PM

Napa Weather Report

San Francisco: Rain showers may dampen the Bay Area for midweek

May 1, 2016; 9:07 PM ET

Dry conditions will dominate the region through early this week in the Bay Area before rain tries to return for the middle of the week. more >

Travel Weather Forecast

May 01, 2016; 4:32 PM ET United States travel weather forecast

Sun. Travel Weather

48 Hour Precipitation Forecast

Sun. Driving Weather