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    • Tonight

      Sep 25

      51° Lo F
      Partly cloudy
      • Ragweed Pollen
        • Ragweed Pollen
        • Grass Pollen
        • Tree Pollen
        • Mold
        • Dust & Dander
        • Air Quality Index
      • Ragweed Pollen
      • Weather
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
    • Mon

      Sep 26

      72° /57°
      Mostly cloudy
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More
    • Tue

      Sep 27

      75° /49°
      Mostly sunny
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More
    • Wed

      Sep 28

      75° /58°
      Chance of a little p.m. rain
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More
    • Thu

      Sep 29

      66° /57°
      Mostly cloudy, a little rain
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More

    Day

    73°Hi RealFeel® 81° Precipitation 6%
    Sunny and pleasant
    • ESE 4 mph
    • Gusts: 8 mph
    • Max UV Index: 5 (Moderate)
    • Thunderstorms: 2%
    • Precipitation: 0 in
    • Rain: 0 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 0 hrs
    • Hours of Rain: 0 hrs

    Night

    51°Lo RealFeel® 51° Precipitation 15%
    Partly cloudy
    • SSE 5 mph
    • Gusts: 7 mph
    • Max UV Index: N/A
    • Thunderstorms: 2%
    • Precipitation: 0 in
    • Rain: 0 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 0 hrs
    • Hours of Rain: 0 hrs

    Frederick Pollen Levels Sep 25

    • Extreme
    • Very High
    • High
    • Moderate
    • Low
    • Tree Pollen

      Low

    • Ragweed Pollen

      Moderate

    • Mold

      High

    • Grass Pollen

      Low

    Temperature History

    more Historical Weather Data >
      Today Normal Record 9/25/2015
    High 73° 77° N/A 73°
    Low 51° 55° N/A 52°

    Sunrise/Sunset

    • Sunrise: 7:01 AM
    • Sunset: 7:01 PM
    • Duration: 12:00 hr

    Moonrise/Moonset

    • Moonrise: 1:41 AM
    • Moonset: 4:03 PM
    • Duration: 14:22 hr
    Astronomy

    Frederick Weather Report

    Crisp fall air to bring first frost of season to parts of northeastern US

    September 25, 2016; 6:29 PM ET

    Fall air has finally arrived in the northeastern United States and may yield the first frost of the season in parts of the region to end this weekend. More >

    Sun. Pollen

    Sun. Dust & Dander

    Sun. Wind Maps