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    • Today

      Sep 25

      70° /43°
      Sunny and beautiful
      • Ragweed Pollen
        • Ragweed Pollen
        • Grass Pollen
        • Tree Pollen
        • Mold
        • Dust & Dander
        • Air Quality Index
      • High
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: High
      • Tree Pollen: Low
      More
    • Mon

      Sep 26

      74° /62°
      Mostly sunny and pleasant
      • High
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: High
      • Tree Pollen: Low
      More
    • Tue

      Sep 27

      73° /48°
      A little morning rain
      • High
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: High
      • Tree Pollen: Low
      More
    • Wed

      Sep 28

      74° /59°F
      Clouds and sun
      • High
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: High
      • Tree Pollen: Low
    • Thu

      Sep 29

      72° /57°
      Rain and drizzle possible
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More

    Day

    74°Hi RealFeel® 74° Precipitation 25%
    Clouds and sun
    • ENE 7 mph
    • Gusts: 10 mph
    • Max UV Index: 4 (Moderate)
    • Thunderstorms: 0%
    • Precipitation: 0 in
    • Rain: 0 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 0 hrs
    • Hours of Rain: 0 hrs

    Night

    59°Lo RealFeel® 57° Precipitation 25%
    Mostly cloudy and mild
    • ENE 7 mph
    • Gusts: 10 mph
    • Max UV Index: N/A
    • Thunderstorms: 24%
    • Precipitation: 0 in
    • Rain: 0 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 0 hrs
    • Hours of Rain: 0 hrs

    Temperature History

    more Historical Weather Data >
      Today Normal Record 9/28/2015
    High 74° 71° 85° (1959) 81°
    Low 59° 51° 37° (1991) 65°

    Sunrise/Sunset

    • Sunrise: 6:53 AM
    • Sunset: 6:45 PM
    • Duration: 11:52 hr

    Moonrise/Moonset

    • Moonrise: 4:27 AM
    • Moonset: 5:45 PM
    • Duration: 13:18 hr
    Astronomy

    Princeton Weather Report

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

    September 25, 2016; 10:29 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 to end this weekend. More >

    Wed. Dust & Dander

    Wed. Wind Maps