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Yaphank, NY Weather Forecast | 5 Day

Updated: Wed Sep 16th 2026 4:00 PM EDT

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Yaphank, NY Weather Forecast - 9-16-26 - Sunny

Sunny

Wed 9-16-26

Sunny with a high of 71°F and a low of 64°F. There's a very small chance of rainfall, only about 8%. Wind will be moderate, blowing around 15mph on average and gusts of 15mph at 8 PM. The humidity will be on the higher side, averaging about 71%, the maximum being 79% at 11 PM and 70% being its lowest at 5 PM. Barometric pressure is its highest of 30.3inHg at 8 PM, a lowest point of 30.28inHg at 5 PM with an avg 30.29inHg.

    • HI: 71°F
    • LO: 64°F
    • Rainfall: 8%
    • Snowfall: 0%
    • Wind
      15 mph
    • Humidity
      71% avg.
    • UV Index
      4.7
    • Air Quality
      Good
    • Sunrise
      06:33 AM
    • Sunset
      06:59 PM
    • Moonrise
      12:51 PM
    • Moonset
      09:46 PM
    • Moon Phase
      First Quarter
Yaphank, NY Weather Forecast - 9-17-26 - Sunny

Sunny

Weather Tomorrow, Thu 9-17-26

Sunny with a high of 73°F and a low of 70°F. There might be light rainfall having a 19% chance with an estimated 0in. Wind will be moderate, blowing around 17mph on average and gusts of 26.2mph at 11 PM. High humidity with average of 82% is anticipated, the maximum being 87% at 5 AM and 78% being its lowest at 11 AM. Barometric pressure is its highest of 30.28inHg at 12 AM, a lowest point of 30.11inHg at 11 PM with an avg 30.21inHg.

    • HI: 73°F
    • LO: 70°F
    • Rainfall: 19% | est. 0in
    • Snowfall: 0%
    • Wind
      16.6 mph
    • Humidity
      82% avg.
    • UV Index
      6.8
    • Air Quality
      Good
    • Sunrise
      06:34 AM
    • Sunset
      06:57 PM
    • Moonrise
      01:54 PM
    • Moonset
      10:33 PM
    • Moon Phase
      First Quarter
Yaphank, NY Weather Forecast - 9-18-26 - Overcast

Overcast

Fri 9-18-26

Overcast with a high of 77°F and a low of 69°F. There's a moderate 29% chance of rainfall with an estimated 0.01in. Wind will be moderate, blowing around 18mph on average and gusts of 27.8mph at 2 AM. The humidity will be on the higher side, averaging about 72%, the maximum being 89% at 8 AM and 56% being its lowest at 5 PM. Barometric pressure is its highest of 30.11inHg at 10 PM, a lowest point of 30.03inHg at 3 PM with an avg 30.06inHg.

    • HI: 77°F
    • LO: 69°F
    • Rainfall: 29% | est. 0.01in
    • Snowfall: 0%
    • Wind
      17.2 mph
    • Humidity
      72% avg.
    • UV Index
      6.6
    • Air Quality
      Good
    • Sunrise
      06:35 AM
    • Sunset
      06:56 PM
    • Moonrise
      02:49 PM
    • Moonset
      11:28 PM
    • Moon Phase
      First Quarter
Yaphank, NY Weather Forecast - 9-19-26 - Overcast

Overcast

Sat 9-19-26

Overcast with a high of 68°F and a low of 62°F. There's a very small chance of rainfall, only about 9%. Wind will be moderate, blowing around 18mph on average and gusts of 25.1mph at 1 PM. The humidity will be on the higher side, averaging about 63%, the maximum being 71% at 12 AM and 56% being its lowest at 6 AM. Barometric pressure is its highest of 30.25inHg at 9 PM, a lowest point of 30.1inHg at 2 AM with an avg 30.19inHg.

    • HI: 68°F
    • LO: 62°F
    • Rainfall: 9%
    • Snowfall: 0%
    • Wind
      17.2 mph
    • Humidity
      63% avg.
    • UV Index
      2.8
    • Air Quality
      Good
    • Sunrise
      06:36 AM
    • Sunset
      06:54 PM
    • Moonrise
      03:34 PM
    • Moonset
      Does not set today
    • Moon Phase
      First Quarter
Yaphank, NY Weather Forecast - 9-20-26 - Overcast

Overcast

Sun 9-20-26

Overcast with a high of 72°F and a low of 62°F. It will likey rain, having a 84% chance of a downpour with an estimated 0.26in. Winds will be strong at speeds peaking at 27mph and gusts of 40mph at 9 PM. The humidity will be on the higher side, averaging about 78%, the maximum being 94% at 11 PM and 66% being its lowest at 3 AM. Barometric pressure is its highest of 30.22inHg at 12 AM, a lowest point of 29.86inHg at 8 PM with an avg 30.04inHg.

    • HI: 72°F
    • LO: 62°F
    • Rainfall: 84% | est. 0.26in
    • Snowfall: 0%
    • Wind
      26.6 mph
    • Humidity
      78% avg.
    • UV Index
      5
    • Air Quality
      Good
    • Sunrise
      06:37 AM
    • Sunset
      06:52 PM
    • Moonrise
      04:12 PM
    • Moonset
      12:28 AM
    • Moon Phase
      Waxing Gibbous
Yaphank, NY Weather Forecast - 9-21-26 - Overcast

Overcast

Mon 9-21-26

Overcast with a high of 65°F and a low of 59°F. It will likey rain, having a 76% chance of a downpour with an estimated 0.09in. Winds will be strong at speeds peaking at 21mph and gusts of 28.3mph at 2 AM. The humidity will be on the higher side, averaging about 80%, the maximum being 97% at 12 AM and 71% being its lowest at 5 PM. Barometric pressure is its highest of 30.21inHg at 11 PM, a lowest point of 29.91inHg at 12 AM with an avg 30.09inHg.

    • HI: 65°F
    • LO: 59°F
    • Rainfall: 76% | est. 0.09in
    • Snowfall: 0%
    • Wind
      20.6 mph
    • Humidity
      80% avg.
    • UV Index
      4
    • Air Quality
      TBA
    • Sunrise
      06:38 AM
    • Sunset
      06:51 PM
    • Moonrise
      04:42 PM
    • Moonset
      01:30 AM
    • Moon Phase
      Waxing Gibbous

This 5-Day weather forecast is valid for ZIP code 11980, accurately covering the area of Yaphank, NY.

Currently

Sunny 71°F
30.29 inHg.
Barometer
69%
Humidity
SW 20.9 mph
Wind
Sunny

National Outlook

Storms and Heat Hit Central U.S. 09-15 to 09-17

Tue Sep 15th 2026, 8:34am PDT
Read

Rain and Thunderstorms Shake Up the Plains 09-18 to 09-22

Extended Forecast
Tue Sep 15th 2026, 8:35am PDT
Read

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