• Today

    Sep 17

    72°Lo 56°

    Turning out cloudy

    Excellent for biking
    • Precip
      40%
    • Hours of Precip
      0.5
    • Wind
      Gust
      5 mph
    more
  • Thu

    Sep 18

    69°Lo 56°

    Mostly cloudy, showers around

    Fair for biking
    • Precip
      64%
    • Hours of Precip
      2
    • Wind
      Gust
      5 mph
  • Fri

    Sep 19

    71°Lo 49°

    Cloudy most of the time

    Excellent for biking
    • Precip
      25%
    • Hours of Precip
      0
    • Wind
      Gust
      6 mph
    more
  • Sat

    Sep 20

    74°Lo 51°

    Partly sunny and pleasant

    Excellent for biking
    • Precip
      2%
    • Hours of Precip
      0
    • Wind
      Gust
      9 mph
    more
  • Sun

    Sep 21

    80°Lo 54°

    Mostly sunny and pleasant

    Excellent for biking
    • Precip
      8%
    • Hours of Precip
      0
    • Wind
      Gust
      6 mph
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Thu
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  1am 2am 3am 4am 5am 6am 7am 8am
Forecast
Showers
Cloudy
Cloudy
Showers
Cloudy
Cloudy
Showers
Cloudy
Temp (°F) 58° 58° 58° 58° 57° 57° 56° 57°
RealFeel® 56° 57° 57° 56° 57° 56° 54° 56°
Humidity 91% 91% 91% 92% 93% 93% 93% 93%
   
  1am 2am 3am 4am 5am 6am 7am 8am
Rain
 
58%
 
49%
 
47%
 
51%
 
47%
 
47%
 
51%
 
47%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
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  1am 2am 3am 4am 5am 6am 7am 8am
Wind (mph) 2 SSE 2 SSE 2 SSE 2 SSE 2 SSE 2 SSE 2 SSE 3 SSE
UV Index 0 0 0 0 0 0 0 0
Cloud Cover 98% 99% 100% 100% 99% 98% 95% 93%
Dew Point 55° 55° 55° 55° 55° 55° 54° 55°
Middle Grid line 60 F Middle Grid line 55 F

Temperature History - Sep 18

more Historical Weather Data >
  Today Normal Record 9/18/2013
High 69° 68° N/A 66°
Low 56° 48° N/A 54°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:50 AM with 12:26 of sunlight, then sets at 7:16 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 1:29 AM with 14:57 of moolight, then sets at 4:26 PM

Top Story

Mount Vernon Weather Report

Seattle: Cooler, Wet Weather to Return

September 17, 2014; 7:20 AM ET

After a three-day stretch with well-above normal high temperatures, more seasonable weather is expected in Seattle for the remainder of the week. more >

Is Your Outdoor Gear Waterproof?

Dec 5, 2012; 5:00 AM ET Now that it's cold enough to hit the slopes, you may want to look more closely at what materials your winter sports gear is made of. As it turns out, not all waterproofing is created equal.