• Tonight

    Jul 27

    Lo 54°

    Mostly clear

    Home Energy Efficiency Weather
    • Avg
      RealFeel
      70°
    • Hi
      RealFeel
      83°
    • Wind
      Speed
      6 mph
  • Thu

    Jul 28

    80°Lo 55°

    Mostly sunny and warm

    Poor for home energy
    • Avg
      RealFeel
      70°
    • Hi
      RealFeel
      84°
    • Wind
      Speed
      5 mph
    more
  • Fri

    Jul 29

    79°Lo 55°

    Sunny much of the time

    Poor for home energy
    • Avg
      RealFeel
      70°
    • Hi
      RealFeel
      84°
    • Wind
      Speed
      5 mph
    more
  • Sat

    Jul 30

    74°Lo 53°

    Partly sunny

    Poor for home energy
    • Avg
      RealFeel
      67°
    • Hi
      RealFeel
      80°
    • Wind
      Speed
      5 mph
    more
  • Sun

    Jul 31

    73°Lo 52°

    Clouds breaking for some sun

    Poor for home energy
    • Avg
      RealFeel
      66°
    • Hi
      RealFeel
      78°
    • Wind
      Speed
      5 mph
    more
Next Previous
Hi 81° RealFeel® 83° Precipitation 11%

Day

N

E

S

W

  • WNW 6 mph
  • Gusts: 12 mph

Partly to mostly sunny and nice

  • Max UV Index: 7 (High)
  • Thunderstorms: 1%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 54° RealFeel® 56° Precipitation 9%

Night

N

E

S

W

  • N 1 mph
  • Gusts: 4 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 - Jul 27

more Historical Weather Data >
  Today Normal Record 7/27/2015
High 81° 75° N/A 73°
Low 54° 53° N/A 52°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:39 AM with 15:13 of sunlight, then sets at 8:52 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 12:33 AM with 14:17 of moolight, then sets at 2:50 PM

Mount Vernon Weather Report

Oppressive heat to envelop the western US as late-week highs soar 10 to 15 degrees Fahrenheit above average

July 27, 2016; 10:34 PM ET

Highs will run between 10 and 15 degrees Fahrenheit above average across much of the western United States into the upcoming weekend. more >

Wed. Home Energy Efficiency

Wed. Degree Days

Wed. UV Index