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 commencement of September includes a gentle temperature shift, with the average high-temperature dropping a bit from a moderately hot 77.4°F (25.2°C) in August to an agreeable 70.9°F (21.6°C). Valois's September nights cool down to an average low-temperature of 50.9°F (10.5°C).Humidity
In September, the average relative humidity is 80%.Rainfall
In Valois, in September, it is raining for 13.7 days, with typically 2.17" (55mm) of accumulated precipitation. Throughout the year, in Valois, there are 162.3 rainfall days, and 29.02" (737mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall in Valois.Daylight
The average length of the day in September is 12h and 29min.On the first day of the month, sunrise is at 6:33 am and sunset at 7:41 pm. On the last day of September, sunrise is at 7:04 am and sunset at 6:50 pm EDT.
Sunshine
In September, the average sunshine is 8.5h.UV index
The average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.Note: A maximum high UV index of 3 in September translates into the following recommendations:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Valois in September?
What is the average humidity in September in Valois?
How much does it rain in Valois in September?
When it does not snow in Valois?
Does it snow in Valois in September?
How many hours of daylight does Valois have in September?
What time are sunrise and sunset in September in Valois?
How many hours of sunshine does Valois have in September?
What is the UV index intensity in September in Valois?
Average temperature in September
Valois, NY
- Average high temperature in September: 70.9°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (28.6°F).
- Average low temperature in September: 50.9°F
The month with the highest average low temperature is July (58.6°F).
The coldest month (with the lowest average low temperature) is January (17.2°F).
Average pressure in September
Valois, NY
- Average pressure in September: 30.06"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
Valois, NY
- Average wind speed in September: 6.5mph
The windiest month (with the highest average wind speed) is January (9.9mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity in September
Valois, NY
- Average humidity in September: 80%
The month with the highest relative humidity is February (86%).
The month with the lowest relative humidity is May (77%).
Average rainfall in September
Valois, NY
- Average rainfall in September: 2.17"
The wettest month (with the highest rainfall) is October (3.03").
The driest month (with the least rainfall) is January (1.73").
Average rainfall days in September
Valois, NY
- Average rainfall days in September: 13.7 days
The months with the highest number of rainy days are July and August (18.1 days).
The month with the least rainy days is January (6.5 days).
Average snowfall in September
Valois, NY
- Average snowfall in September: 0"
The month with the highest snowfall is February (7.76").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Valois, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (18.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Valois, NY
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 8h and 3min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 2h and 42min).
Average sunshine days in September
Valois, NY
- Average sunshine days in September: 14 days
The month with the most sunshine days is September (14 days).
The month with the least sunshine days is February (6 days).
Average UV index in September
Valois, NY
- Average UV index in September: 3
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Valois, NY
- Average cloud cover in September: 39
The months with the most cloud cover are January and February (Cloud cover 72).
The months with the least cloud cover are July and August (Cloud cover 35).
Average visibility in September
Valois, NY
- Average visibility in September: 5mi
The months with the highest visibility are April, May, June and October (6mi).
The months with the lowest visibility are January, February, March, July, August, September, November and December (5mi).
Valois, New York, USA
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