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 transition into September is accompanied by a slight temperature decrease, with the average high-temperature shifting from a moderately hot 82°F (27.8°C) in August to a still warm 74.5°F (23.6°C). Putnam Valley cools down to an average low-temperature of 56.3°F (13.5°C) throughout the month of September.Humidity
The average relative humidity in September is 77%.Rainfall
In Putnam Valley, in September, during 12.5 rainfall days, 2.01" (51mm) of precipitation is typically accumulated. In Putnam Valley, New York, during the entire year, the rain falls for 148.4 days and collects up to 30.55" (776mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In Putnam Valley, the average length of the day in September is 12h and 28min.On the first day of September in Putnam Valley, sunrise is at 6:22 am and sunset at 7:27 pm. On the last day of the month, sunrise is at 6:51 am and sunset at 6:38 pm EDT.
Sunshine
In Putnam Valley, the average sunshine in September is 8.8h.UV index
In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the average person.Note: A typical high UV index of 4 in September suggests the following recommendations:
Undertake protective steps - Preventing sun damage is advised. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Experience reduced UV exposure by about half when donning a wide-brim hat.
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 many days does it rain in September?
When it does not snow in Putnam Valley?
Does it snow in September?
How many hours of daylight does Putnam Valley have in September?
When are sunrise and sunset in September?
How many hours of sunshine does Putnam Valley have in September?
How high is the UV index in September?
Average temperature in September
Putnam Valley, NY
- Average high temperature in September: 74.5°F
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (33.8°F).
- Average low temperature in September: 56.3°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (21.9°F).
Average pressure in September
Putnam Valley, 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
Putnam Valley, NY
- Average wind speed in September: 5.2mph
The windiest months (with the highest average wind speed) are January and March (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in September
Putnam Valley, NY
- Average humidity in September: 77%
The months with the highest relative humidity are February, October and December (79%).
The month with the lowest relative humidity is April (73%).
Average rainfall in September
Putnam Valley, NY
- Average rainfall in September: 2.01"
The wettest month (with the highest rainfall) is July (3.31").
The driest month (with the least rainfall) is February (1.81").
Average rainfall days in September
Putnam Valley, NY
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is January (6.5 days).
Average snowfall in September
Putnam Valley, NY
- Average snowfall in September: 0"
The month with the highest snowfall is March (3.39").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Putnam Valley, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (6.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Putnam Valley, NY
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in September
Putnam Valley, NY
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is January (20.3 days).
The month with the least sunshine days is July (11.4 days).
Average UV index in September
Putnam Valley, NY
- Average UV index in September: 4
The months with the highest UV index are June 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
Putnam Valley, NY
- Average cloud cover in September: 37
The months with the most cloud cover are February, March and December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Putnam Valley, NY
- Average visibility in September: 6mi
The months with the highest visibility are January, March, April, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are February and May (5mi).
Putnam Valley, New York, USA
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