Fire Island (FI) and NYC Weather

Weather Summary – September 2, 2025 (11 AM)

Today through Thursday looks great again with comfortable temperatures and low humidity. A reduced chance of showers and thunderstorms will arrive late Thursday into Friday, then scattered showers on Saturday. Computer models have been reducing the amount of predicted rainfall with this system, so the overall drought-like conditions—especially on Fire Island—will most likely continue. After this cold frontal system passes late Saturday, another stretch of fine fall-like weather will arrive.

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🌪️ Hurricane Watch

The tropics remain unusually quiet, though a wave over the eastern Atlantic is likely to develop into a tropical storm this week. Currently, all computer models project this storm to be well to our east.

• NOAA Tropical Update

https://www.nhc.noaa.gov/gtwo.php?basin=atlc&fdays=5

Great article in the New York Times about hurricane forecasting 

https://www.nytimes.com/2025/08/28/weather/hurricane-katrina-forecasting.html?unlocked_article_code=1.i08.UVG6.NxPFhZAxeV3t&smid=url-share

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🌊 Water Temperatures

• Ocean: 72°F

• Great South Bay: 71°F

NOAA Tide Predictions – Cherry Grove

https://tidesandcurrents.noaa.gov/noaatidepredictions.html?id=8515228&units=standard&bdate=20250825&edate=20250826&timezone=LST/LDT&clock=12hour&datum=MLLW&interval=hilo&action=dailychart

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📅 Detailed Forecast

Tuesday, September 2

• Mostly sunny

• Highs: Upper 70s (FI), low 80s (NYC)

• Winds: E 5–15 mph (FI), light and variable (NYC)

• Dew Points: Mid 50s (NYC), upper 50s (FI)

• Confidence: High

Tonight

• Mainly clear

• Lows: Around 60 (FI), low 60s (NYC)

• Winds: NE 5–10 mph

• Dew Points: Mid 50s

• Confidence: High

Wednesday, September 3

• Mostly sunny

• Highs: Upper 70s (FI), low 80s (NYC)

• Winds: Becoming SW 5–15 mph

• Dew Points: Low 50s (NYC), upper 50s (FI)

• Confidence: High

Thursday, September 4

• Sun and clouds – chance for storms at night

• Highs: Low 80s (NYC), mid 70s (FI)

• Winds: SE 5–15 mph (NYC), 10–25 mph (FI)

• Dew Points: Rising into the upper 60s (FI), low 60s (NYC)

• Confidence: High

Friday, September 5

• Showers and thunderstorms possible in the early morning hours and the mid to late afternoon

• Highs: Mid 80s (NYC), upper 70s (FI)

• Winds: Variable 5–15 mph

• Dew Points: Upper 60s (NYC), low 70s (FI)

• Confidence: Medium

Saturday, September 6

• Sun and clouds, scattered showers and thunderstorms possible

• Highs: Upper 70s to low 80s (FI), mid to upper 80s (NYC)

• Winds: S 10–25 mph

• Dew Points: Low 70s (FI), mid 60s (NYC)

• Confidence: Medium

Sunday, September 7

• Mainly sunny

• Highs: Low to mid 70s

• Winds: NW 5–15 mph (NYC), 10–25 mph (FI)

• Dew Points: Upper 40s

• Confidence: Medium

Monday, September 8

• Mainly sunny

• Highs: Mid 70s (NYC), low 70s (FI)

• Winds: NE 5–15 mph

• Dew Points: Low 40s

• Confidence: Low

Tuesday, September 9

• Mainly sunny

• Highs: Mid 70s (NYC), low 70s (FI)

• Winds: NE 5–15 mph

• Dew Points: Low 40s

• Confidence: Low