Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
September's arrival aligns with a minor decrease in average high-temperatures, from August's moderately hot 77.7°F (25.4°C) to an agreeable 71.4°F (21.9°C). Throughout September in Fishers Island, a steady low-temperature average of 59.9°F (15.5°C) is noted.Humidity
In September, the average relative humidity is 78%.Rainfall
September is the month with the least rainfall. Rain falls for 12.2 days and accumulates 1.73" (44mm) of precipitation.Snowfall
In Fishers Island, snow does not fall in June through October.Daylight
In Fishers Island, the average length of the day in September is 12h and 28min.On the first day of September, sunrise is at 6:15 am and sunset at 7:20 pm. On the last day of the month, sunrise is at 6:44 am and sunset at 6:31 pm EDT.
Sunshine
In September, the average sunshine in Fishers Island is 8.9h.UV index
The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: In September, a regular UV index of 4 translates into these guidelines:
Preventative actions are necessary - Recommendations to ward off sunburn are given. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Frequently asked questions
What is the usual temperature for Fishers Island in September?
What is the average humidity in September in Fishers Island?
What is the driest month in Fishers Island?
How much does it rain in Fishers Island in September?
When it does not snow in Fishers Island?
What is the average length of the day in September in Fishers Island?
What time are sunrise and sunset in September in Fishers Island?
How long on average sun shines in September in Fishers Island?
What is the UV index reading in September in Fishers Island?
Average temperature in September
Fishers Island, NY
- Average high temperature in September: 71.4°F
The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (36.1°F).
- Average low temperature in September: 59.9°F
The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (26.6°F).
Average pressure in September
Fishers Island, NY
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Fishers Island, NY
- Average wind speed in September: 9.1mph
The windiest month (with the highest average wind speed) is January (12.4mph).
The calmest months (with the lowest average wind speed) are July and August (8.1mph).
Average humidity in September
Fishers Island, NY
- Average humidity in September: 78%
The months with the highest relative humidity are June and July (80%).
The months with the lowest relative humidity are January, March, April and November (74%).
Average rainfall in September
Fishers Island, NY
- Average rainfall in September: 1.73"
The wettest month (with the highest rainfall) is December (3.86").
The driest month (with the least rainfall) is September (1.73").
Average rainfall days in September
Fishers Island, NY
- Average rainfall days in September: 12.2 days
The month with the highest number of rainy days is July (16.8 days).
The month with the least rainy days is February (9.6 days).
Average snowfall in September
Fishers Island, NY
- Average snowfall in September: 0"
The month with the highest snowfall is March (2.36").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in September
Fishers Island, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (6.6 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Fishers Island, NY
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 8h and 5min
The months with the most sunshine are July and August (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).
Average sunshine days in September
Fishers Island, NY
- Average sunshine days in September: 15.7 days
The month with the most sunshine days is November (16.9 days).
The month with the least sunshine days is June (11.9 days).
Average UV index in September
Fishers Island, NY
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Fishers Island, NY
- Average cloud cover in September: 32
The month with the most cloud cover is December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in September
Fishers Island, NY
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Fishers Island, New York, USA
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