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 move into September indicates a slight reduction in the average high-temperature, down from August's warm 80.6°F (27°C) to a still moderately hot 73.8°F (23.2°C). Throughout September in Richmond Hill, a steady low-temperature average of 63.5°F (17.5°C) is noted.Humidity
In Richmond Hill, the average relative humidity in September is 73%.Rainfall
In Richmond Hill, in September, during 13.1 rainfall days, 2.48" (63mm) of precipitation is typically accumulated. Throughout the year, in Richmond Hill, there are 155.6 rainfall days, and 34.72" (882mm) of precipitation is accumulated.Snowfall
May through October are months without snowfall in Richmond Hill.Daylight
In September, the average length of the day in Richmond Hill is 12h and 27min.On the first day of the month, sunrise is at 6:23 am and sunset at 7:27 pm. On the last day of September, in Richmond Hill, sunrise is at 6:51 am and sunset at 6:38 pm EDT.
Sunshine
In September, the average sunshine in Richmond Hill is 9.1h.UV index
The average daily maximum UV index in September in Richmond Hill is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: A maximum daily UV index of 5 during September morphs into the following directions:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Frequently asked questions
What is the average September temperature in Richmond Hill?
What is the average humidity in September in Richmond Hill?
How many days does it rain in September in Richmond Hill?
When it does not snow in Richmond Hill?
How many hours of daylight does Richmond Hill have in September?
When are sunrise and sunset in September in Richmond Hill?
How long on average sun shines in September in Richmond Hill?
How high is the UV index in September in Richmond Hill?
Average temperature in September
Richmond Hill, NY
- Average high temperature in September: 73.8°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (36.9°F).
- Average low temperature in September: 63.5°F
The month with the highest average low temperature is July (70.3°F).
The coldest month (with the lowest average low temperature) is January (27.7°F).
Average pressure in September
Richmond Hill, 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
Richmond Hill, NY
- Average wind speed in September: 8.3mph
The windiest month (with the highest average wind speed) is January (11.2mph).
The calmest month (with the lowest average wind speed) is July (7.3mph).
Average humidity in September
Richmond Hill, NY
- Average humidity in September: 73%
The months with the highest relative humidity are February, May and December (75%).
The months with the lowest relative humidity are August and November (71%).
Average rainfall in September
Richmond Hill, NY
- Average rainfall in September: 2.48"
The wettest month (with the highest rainfall) is July (4.02").
The driest month (with the least rainfall) is January (2.05").
Average rainfall days in September
Richmond Hill, NY
- Average rainfall days in September: 13.1 days
The month with the highest number of rainy days is July (17.9 days).
The month with the least rainy days is January (7.8 days).
Average snowfall in September
Richmond Hill, NY
- Average snowfall in September: 0"
The month with the highest snowfall is March (1.85").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Richmond Hill, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (4.5 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
Richmond Hill, NY
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in September
Richmond Hill, NY
- Average sunshine days in September: 14.5 days
The months with the most sunshine days are January and November (19.7 days).
The month with the least sunshine days is July (11 days).
Average UV index in September
Richmond Hill, 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
Richmond Hill, NY
- Average cloud cover in September: 32
The month with the most cloud cover is December (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 28).
Average visibility in September
Richmond Hill, 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).
Richmond Hill, New York, USA
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