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    • Today

      Sep 25

      70° /43°F
      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
    • 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°
      Clouds and sun
      • High
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: High
      • Tree Pollen: Low
      More
    • Thu

      Sep 29

      72° /57°
      Rain and drizzle possible
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    Sunday
    12pm
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    Forecast Sunny Sunny Mostly Sunny Mostly Sunny Mostly Sunny Mostly Sunny Sunny Clear
    Temp (°F) 66° 67° 68° 69° 70° 70° 67° 64°
    RealFeel® 71° 73° 74° 74° 73° 70° 66° 65°
    Wind (mph) 6 N 6 N 5 N 5 N 5 NNW 5 NW 4 WNW 4 WSW
    precip
    12pm
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    Rain
    0%
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    Snow
    0%
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    Ice
    0%
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    SKY
    12pm
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    UV Index 4 5 4 4 2 1 0 0
    Cloud Cover 6% 6% 10% 12% 12% 10% 4% 0%
    Humidity 36% 35% 33% 31% 30% 31% 35% 42%
    Dew Point 38° 39° 38° 37° 38° 38° 39° 41°
    Temp °F
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    75° 70° 65° 60°

    Temperature History

    more Historical Weather Data >
      Today Normal Record 9/25/2015
    High 70° 72° 92° (1970) 76°
    Low 43° 52° 36° (1997) 60°

    Sunrise/Sunset

    • Sunrise: 6:50 AM
    • Sunset: 6:50 PM
    • Duration: 12:00 hr

    Moonrise/Moonset

    • Moonrise: 1:27 AM
    • Moonset: 3:54 PM
    • Duration: 14:27 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 >

    Sun. Pollen

    Sun. Dust & Dander

    Sun. Wind Maps