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United StatesThe weather in September in Fishers Island
It's warm in September in Fishers Island with an average temperature of 24°C. Temperatures this month range from a low of 20°C to a high of 28°C. At night, you can expect temperatures between 13°C and 19°C.
Looking for sun? September isn’t a good month to be in Fishers Island. The temperature is nice, but there’s too much chance of rain.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in September for Fishers Island, New York. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 32°C in 2018, Fishers Island reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 15°C in 2018. The extreme nighttime temperatures ranged from a lowest recorded value of 4°C to a highest value of 24°C.
Rainfall amount
In September, there is an average of 142 mm of precipitation, spread over 15 days. The wind speed is around 4 Bft, mostly coming from the South.
Daily weather in September for Fishers Island
Click on any day in September to get detailed info about the usual weather on that day in Fishers Island. Check out the historical temperatures and precipitation over the past 10 years on this day.
September weather comparison
| Fishers Island | New York | |
|---|---|---|
| Average temperature | 24°C | 27°C |
| Max. temperature | 28°C | 31°C |
| Min. temperature | 13°C | -5°C |
| Total precipitation | 142 mm | 57 mm |
| Rainy days | 15 days | 9 days |
Start of September
The month of September starts in Fishers Island with warm temps, averaging around 26°C during the day and nights around 18°C.
Mid September
By mid-September, daytime temps drop to around 24°C, with nights around 17°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.
End of September
By the end of September, the average daytime temperature in Fishers Island is around 23°C, while nighttime temps are about 14°C. Expect regular precipitation, but if you’re lucky, you’ll also get some dry and sunny days.
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UV index
The UV index is a maximum of 5 this month. That's a moderate value on the intensity scale of 1 to 11. Unprotected skin can burn in about 30 minutes.
Check out the climate of Fishers Island for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in September in Fishers Island, New York. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in September in Fishers Island
Temperature in September in Fishers Island over the years
Precipitation charts
These charts show the average amount of precipitation in September in Fishers Island, New York. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in September in Fishers Island
Total precipitation in September in Fishers Island over the years
Daily UV index in September in Fishers Island
This chart shows the average daily UV index in September in Fishers Island, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in September in Fishers Island
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Average weather in Fishers Island by month
Click on a month below to see detailed weather info for Fishers Island. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.