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 arrival of September is marked by a minor reduction in average high-temperature, sliding from a warm 78.4°F (25.8°C) in August to a pleasant 71.4°F (21.9°C). September nights cool down to an average low-temperature of 51.1°F (10.6°C).Humidity
The average relative humidity in September is 78%.Rainfall
In September, the rain falls for 9.2 days. Throughout September, 1.26" (32mm) of precipitation is accumulated. Throughout the year, there are 122.4 rainfall days, and 18.78" (477mm) of precipitation is accumulated.Snowfall
In Amsterdam, snow does not fall in June through September.Daylight
In Amsterdam, the average length of the day in September is 12h and 29min.On the first day of September, sunrise is at 6:22 am and sunset at 7:30 pm. On the last day of the month, sunrise is at 6:53 am and sunset at 6:39 pm EDT.
Sunshine
In Amsterdam, the average sunshine in September is 9h.UV index
The average daily maximum UV index in September in Amsterdam is 3. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: The UV index of 3 during September translates into the following guidance:
Exercise care. People with light skin might get burns in fewer than 30 minutes. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
What is the average humidity in September?
How much does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Amsterdam have in September?
What time are sunrise and sunset in September?
How many hours of sunshine does Amsterdam have in September?
What is the UV index intensity in September?
Average temperature in September
Amsterdam, NY
- Average high temperature in September: 71.4°F
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (27.9°F).
- Average low temperature in September: 51.1°F
The month with the highest average low temperature is July (58.8°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).
Average pressure in September
Amsterdam, 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 (29.92"Hg).
Average wind speed in September
Amsterdam, NY
- Average wind speed in September: 5.5mph
The windiest month (with the highest average wind speed) is February (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).
Average humidity in September
Amsterdam, NY
- Average humidity in September: 78%
The month with the highest relative humidity is February (84%).
The month with the lowest relative humidity is April (74%).
Average rainfall in September
Amsterdam, NY
- Average rainfall in September: 1.26"
The wettest months (with the highest rainfall) are May and October (2.01").
The driest month (with the least rainfall) is March (1.14").
Average rainfall days in September
Amsterdam, NY
- Average rainfall days in September: 9.2 days
The month with the highest number of rainy days is May (14.8 days).
The month with the least rainy days is January (4.7 days).
Average snowfall in September
Amsterdam, NY
- Average snowfall in September: 0"
The month with the highest snowfall is January (4.57").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Amsterdam, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (8.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Amsterdam, 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: 9h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 3h and 36min).
Average sunshine days in September
Amsterdam, NY
- Average sunshine days in September: 18.9 days
The month with the most sunshine days is November (19.8 days).
The months with the least sunshine days are April, May and July (14.3 days).
Average UV index in September
Amsterdam, 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 February and December (UV index 1).
Average cloud cover in September
Amsterdam, NY
- Average cloud cover in September: 35
The month with the most cloud cover is February (Cloud cover 61).
The months with the least cloud cover are July and August (Cloud cover 33).
Average visibility in September
Amsterdam, NY
- Average visibility in September: 5mi
The months with the highest visibility are April, November and December (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September and October (5mi).
Amsterdam, New York, USA
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