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
In Berwyn, the average high-temperature in September slightly decreases from a moderately hot 75.7°F (24.3°C) in August to an agreeable 69.6°F (20.9°C). Berwyn temperatures generally rest at a low of 50.9°F (10.5°C) during the September nights.Humidity
The average relative humidity in September is 80%.Rainfall
September is the month with the least rainfall in Berwyn. Rain falls for 8.7 days and accumulates 0.63" (16mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day in Berwyn, New York, is 12h and 29min.On the first day of September, sunrise is at 6:29 am and sunset at 7:38 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 6:46 pm EDT.
Sunshine
In Berwyn, the average sunshine in September is 8.6h.UV index
The average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: A maximum high UV index of 3 in September translates into the following recommendations:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. Around midday, solar radiation is most harmful; hence, exposure should be limited. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
What is the driest month?
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?
When is the sunrise / sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Berwyn, NY
- Average high temperature in September: 69.6°F
The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (27°F).
- Average low temperature in September: 50.9°F
The month with the highest average low temperature is July (58.3°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).
Average pressure in September
Berwyn, NY
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Berwyn, NY
- Average wind speed in September: 6.5mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity in September
Berwyn, NY
- Average humidity in September: 80%
The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are April and May (79%).
Average rainfall in September
Berwyn, NY
- Average rainfall in September: 0.63"
The wettest month (with the highest rainfall) is May (1.18").
The driest month (with the least rainfall) is September (0.63").
Average rainfall days in September
Berwyn, NY
- Average rainfall days in September: 8.7 days
The month with the highest number of rainy days is July (14.5 days).
The month with the least rainy days is January (4.5 days).
Average snowfall in September
Berwyn, NY
- Average snowfall in September: 0"
The month with the highest snowfall is November (2.44").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Berwyn, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (14.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Berwyn, 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 4min
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 24min).
Average sunshine days in September
Berwyn, NY
- Average sunshine days in September: 17.8 days
The month with the most sunshine days is October (18.2 days).
The months with the least sunshine days are February and July (12.9 days).
Average UV index in September
Berwyn, NY
- Average UV index in September: 3
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Berwyn, NY
- Average cloud cover in September: 38
The month with the most cloud cover is February (Cloud cover 75).
The months with the least cloud cover are July and August (Cloud cover 35).
Average visibility in September
Berwyn, NY
- Average visibility in September: 5mi
The months with the highest visibility are April, May, October, November and December (6mi).
The months with the lowest visibility are January, February, March, June, July, August and September (5mi).
Berwyn, New York, USA
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