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
The shift from August to September coincides with a small decrease in the average high-temperature, down to a still warm 74.5°F (23.6°C) from 81.3°F (27.4°C). Throughout September, an average low-temperature of 61.7°F (16.5°C) is expected.Humidity
In September, the average relative humidity is 73%.Rainfall
In September, in New Rochelle, New York, the rain falls for 12.9 days. Throughout September, 1.85" (47mm) of precipitation is accumulated. In New Rochelle, New York, during the entire year, the rain falls for 150.3 days and collects up to 27.72" (704mm) of precipitation.Snowfall
In New Rochelle, snow does not fall in May through October.Daylight
In New Rochelle, New York, the average length of the day in September is 12h and 27min.On the first day of the month, sunrise is at 6:22 am and sunset at 7:27 pm. On the last day of September, in New Rochelle, sunrise is at 6:51 am and sunset at 6:38 pm EDT.
Sunshine
In New Rochelle, the average sunshine in September is 8.9h.UV index
The average daily maximum UV index in September in New Rochelle is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: A daily high UV index of 5 in September leads to these guidelines:
Adopt protective measures - Suggestions to resist sunburn are offered. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in New Rochelle in September?
What is the average humidity in September in New Rochelle?
How many days does it rain in September in New Rochelle?
When it does not snow in New Rochelle?
What is the average length of the day in September in New Rochelle?
When is the sunrise / sunset in September in New Rochelle?
How many hours of sunshine does New Rochelle have in September?
What is the UV index intensity in September in New Rochelle?
Average temperature in September
New Rochelle, NY
- Average high temperature in September: 74.5°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (36.3°F).
- Average low temperature in September: 61.7°F
The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (25.9°F).
Average pressure in September
New Rochelle, NY
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
New Rochelle, NY
- Average wind speed in September: 7.3mph
The windiest month (with the highest average wind speed) is January (9.9mph).
The calmest month (with the lowest average wind speed) is July (6.5mph).
Average humidity in September
New Rochelle, NY
- Average humidity in September: 73%
The months with the highest relative humidity are February and December (75%).
The month with the lowest relative humidity is August (70%).
Average rainfall in September
New Rochelle, NY
- Average rainfall in September: 1.85"
The wettest month (with the highest rainfall) is July (3.23").
The driest months (with the least rainfall) are January and February (1.69").
Average rainfall days in September
New Rochelle, NY
- Average rainfall days in September: 12.9 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in September
New Rochelle, NY
- Average snowfall in September: 0"
The month with the highest snowfall is March (2.8").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
New Rochelle, NY
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (5.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
New Rochelle, 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 month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in September
New Rochelle, NY
- Average sunshine days in September: 15.2 days
The month with the most sunshine days is January (19.6 days).
The month with the least sunshine days is July (12 days).
Average UV index in September
New Rochelle, NY
- Average UV index in September: 5
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
New Rochelle, NY
- Average cloud cover in September: 34
The months with the most cloud cover are February, March and December (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in September
New Rochelle, 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).
New Rochelle, New York, USA
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