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
As August shifts into September, a minor alteration in temperatures is observed, with average highs reducing from a warm 76.6°F (24.8°C) to a pleasant 69.4°F (20.8°C). Throughout the month of September, Cornwallville witnesses an average temperature of 49.1°F (9.5°C).Humidity
In September, the average relative humidity is 81%.Rainfall
In Cornwallville, in September, it is raining for 12.1 days, with typically 1.85" (47mm) of accumulated precipitation. In Cornwallville, during the entire year, the rain falls for 152.5 days and collects up to 27.24" (692mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day is 12h and 28min.On the first day of the month, sunrise is at 6:22 am and sunset at 7:30 pm. On the last day of September, in Cornwallville, sunrise is at 6:53 am and sunset at 6:39 pm EDT.
Sunshine
The average sunshine in September is 8.7h.UV index
In September, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum UV index of 3 during September translates into these guidelines:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Cornwallville in September?
What is the average humidity in September in Cornwallville?
How many days does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Cornwallville have in September?
What is the UV index reading in September?
Average temperature in September
Cornwallville, NY
- Average high temperature in September: 69.4°F
The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is January (27.9°F).
- Average low temperature in September: 49.1°F
The month with the highest average low temperature is July (57.4°F).
The coldest month (with the lowest average low temperature) is January (15.8°F).
Average pressure in September
Cornwallville, 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
Cornwallville, NY
- Average wind speed in September: 5.3mph
The windiest month (with the highest average wind speed) is January (8.3mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in September
Cornwallville, NY
- Average humidity in September: 81%
The months with the highest relative humidity are February and December (85%).
The months with the lowest relative humidity are April, June and July (78%).
Average rainfall in September
Cornwallville, NY
- Average rainfall in September: 1.85"
The wettest month (with the highest rainfall) is July (3.03").
The driest month (with the least rainfall) is February (1.46").
Average rainfall days in September
Cornwallville, NY
- Average rainfall days in September: 12.1 days
The month with the highest number of rainy days is July (18.8 days).
The month with the least rainy days is January (6.3 days).
Average snowfall in September
Cornwallville, NY
- Average snowfall in September: 0"
The month with the highest snowfall is December (6.65").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Cornwallville, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (13.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Cornwallville, NY
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 3h and 36min).
Average sunshine days in September
Cornwallville, NY
- Average sunshine days in September: 15.3 days
The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is May (9.8 days).
Average UV index in September
Cornwallville, NY
- Average UV index in September: 3
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Cornwallville, NY
- Average cloud cover in September: 40
The month with the most cloud cover is February (Cloud cover 61).
The month with the least cloud cover is July (Cloud cover 36).
Average visibility in September
Cornwallville, NY
- Average visibility in September: 4mi
The months with the highest visibility are January, February, March, April, May, June, July, August, October, November and December (5mi).
The month with the lowest visibility is September (4mi).
Cornwallville, New York, USA
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