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    • Today

      Sep 27

      75° /58°
      Clouds giving way to sun
      • Ragweed Pollen
        • Ragweed Pollen
        • Grass Pollen
        • Tree Pollen
        • Mold
        • Dust & Dander
        • Air Quality Index
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Moderate
      More
    • Wed

      Sep 28

      73° /64°
      A little afternoon rain
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Moderate
      More
    • Thu

      Sep 29

      73° /64°F
      Mostly cloudy with t-storms
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Moderate
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
    • Fri

      Sep 30

      77° /56°
      Cloudy with spotty showers
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Moderate
      More
    • Sat

      Oct 1

      77° /56°
      Pleasant with clouds and sun
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More

    Day

    73°Hi RealFeel® 76° Precipitation 76%
    Mostly cloudy and humid with showers and thunderstorms
    • ESE 7 mph
    • Gusts: 10 mph
    • Max UV Index: 2 (Low)
    • Thunderstorms: 41%
    • Precipitation: 0.93 in
    • Rain: 0.93 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 6 hrs
    • Hours of Rain: 6 hrs

    Night

    64°Lo RealFeel® 60° Precipitation 75%
    Rain and a thunderstorm in the evening; considerable cloudiness
    • E 7 mph
    • Gusts: 9 mph
    • Max UV Index: N/A
    • Thunderstorms: 60%
    • Precipitation: 0.23 in
    • Rain: 0.23 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 2.5 hrs
    • Hours of Rain: 2.5 hrs

    Temperature History

    more Historical Weather Data >
      Today Normal Record 9/29/2015
    High 73° 74° 85° (1973) 79°
    Low 64° 50° 34° (1978) 69°

    Sunrise/Sunset

    • Sunrise: 7:04 AM
    • Sunset: 6:54 PM
    • Duration: 11:50 hr

    Moonrise/Moonset

    • Moonrise: 5:39 AM
    • Moonset: 6:26 PM
    • Duration: 12:47 hr
    Astronomy

    Fairfax Weather Report

    Rain to soak northeastern US during final days of September

    September 27, 2016; 10:09 AM ET

    Periods of rain will drench portions of the northeastern United States from midweek through Friday. More >

    Thu. Dust & Dander

    Thu. Wind Maps