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    • Today

      Sep 25

      74° /52°
      Mostly sunny and nice
      • Ragweed Pollen
        • Ragweed Pollen
        • Grass Pollen
        • Tree Pollen
        • Mold
        • Dust & Dander
        • Air Quality Index
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More
    • Mon

      Sep 26

      73° /57°F
      Mostly cloudy
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
    • Tue

      Sep 27

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

      Sep 28

      72° /54°
      Chance of a little p.m. rain
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More
    • Thu

      Sep 29

      72° /55°
      A couple of showers possible
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More

    Day

    73°Hi RealFeel® 71° Precipitation 25%
    Mostly cloudy
    • SSE 9 mph
    • Gusts: 14 mph
    • Max UV Index: 2 (Low)
    • Thunderstorms: 24%
    • Precipitation: 0 in
    • Rain: 0 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 0 hrs
    • Hours of Rain: 0 hrs

    Night

    57°Lo RealFeel® 58° Precipitation 75%
    Periods of rain ending after midnight
    • SW 7 mph
    • Gusts: 13 mph
    • Max UV Index: N/A
    • Thunderstorms: 24%
    • Precipitation: 0.78 in
    • Rain: 0.78 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 6.5 hrs
    • Hours of Rain: 6.5 hrs

    Frederick Pollen Levels Sep 26

    • 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 9/26/2015
    High 73° 76° N/A 72°
    Low 57° 55° N/A 55°

    Sunrise/Sunset

    • Sunrise: 7:02 AM
    • Sunset: 6:59 PM
    • Duration: 11:57 hr

    Moonrise/Moonset

    • Moonrise: 2:40 AM
    • Moonset: 4:45 PM
    • Duration: 14:05 hr
    Astronomy

    Frederick Weather Report

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

    September 25, 2016; 5:09 AM 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 this weekend. More >

    Mon. Pollen

    Mon. Dust & Dander

    Mon. Wind Maps